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Grant Gullberg, PhD

Title(s)Professor, Radiology
SchoolSchool of Medicine
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    Collapse Research 
    Collapse Research Activities and Funding
    Dynamic cardiac SPECT
    NIH/NHLBI R01HL135490May 1, 2017 - Apr 30, 2021
    Role: Co-Principal Investigator
    Molecular Imaging of Cardiac Hypertrophy Using microPET and Pinhole SPECT
    NIH/NIBIB R01EB007219Jul 15, 2008 - Apr 30, 2013
    Role: Principal Investigator
    Dynamic Cardiac SPECT Imaging
    NIH/NHLBI R01HL050663Jan 1, 1995 - Apr 30, 2015
    Role: Principal Investigator
    FULLY THREE-DIMENSIONAL TOMOGRAPHY MEETING
    NIH/NCI R13CA059807May 15, 1993 - May 14, 1994
    Role: Principal Investigator
    Improved Cardiac SPECT-CT with Converging Hole Collimation
    NIH/NIBIB R01EB000121Jul 1, 1988 - May 31, 2013
    Role: Principal Investigator
    IMPROVED CARDIAC SPECT WITH CONVERGENT HOLE COLLIMATORS
    NIH/NHLBI R01HL039792Jul 1, 1988 - Mar 31, 2002
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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    1. Gullberg GT, Veress AI, Shrestha UM, Liu J, Ordovas K, Segars WP, Seo Y. Multiresolution spatiotemporal mechanical model of the heart as a prior to constrain the solution for 4D models of the heart. Proc SPIE Int Soc Opt Eng. 2019 Jun; 11072. PMID: 31413426.
      View in: PubMed
    2. Yang J, Park D, Gullberg GT, Seo Y. Joint correction of attenuation and scatter in image space using deep convolutional neural networks for dedicated brain 18F-FDG PET. Phys Med Biol. 2019 04 04; 64(7):075019. PMID: 30743246.
      View in: PubMed
    3. Gullberg GT, Shrestha UM, Seo Y. PET imaging of glucose and fatty acid metabolism for NAFLD patients. J Nucl Cardiol. 2018 Dec 13. PMID: 30547298.
      View in: PubMed
    4. Gullberg GT, Fuller M, Shrestha U, Seo Y. Tensor Tomography of Dark Field Scatter using X-ray Interferometry with Bi-prisms. IEEE Nucl Sci Symp Conf Rec (1997). 2017 Oct; 2017. PMID: 30626995.
      View in: PubMed
    5. Mitra D, Abdalah M, Boutchko R, Chang H, Shrestha U, Botvinick E, Seo Y, Gullberg GT. Comparison of sparse domain approaches for 4D SPECT dynamic image reconstruction. Med Phys. 2018 Oct; 45(10):4493-4509. PMID: 30027577.
      View in: PubMed
    6. Gullberg GT, Shrestha UM, Seo Y. Dynamic cardiac PET imaging: Technological improvements advancing future cardiac health. J Nucl Cardiol. 2019 Aug; 26(4):1292-1297. PMID: 29388118.
      View in: PubMed
    7. Pan H, Chang H, Mitra D, Gullberg GT, Seo Y. Sparse domain approaches in dynamic SPECT imaging with high-performance computing. Am J Nucl Med Mol Imaging. 2017; 7(6):283-294. PMID: 29348983.
      View in: PubMed
    8. Sciammarella M, Shrestha UM, Seo Y, Gullberg GT, Botvinick EH. A combined static-dynamic single-dose imaging protocol to compare quantitative dynamic SPECT with static conventional SPECT. J Nucl Cardiol. 2019 06; 26(3):763-771. PMID: 28776314.
      View in: PubMed
    9. Zan Y, Long Y, Chen K, Li B, Huang Q, Gullberg GT. Design of a short nonuniform acquisition protocol for quantitative analysis in dynamic cardiac SPECT imaging - a retrospective 123 I-MIBG animal study. Med Phys. 2017 Jul; 44(7):3639-3649. PMID: 28429371.
      View in: PubMed
    10. Pampaloni MH, Shrestha UM, Sciammarella M, Seo Y, Gullberg GT, Botvinick EH. Noninvasive PET quantitative myocardial blood flow with regadenoson for assessing cardiac allograft vasculopathy in orthotopic heart transplantation patients. J Nucl Cardiol. 2017 08; 24(4):1134-1144. PMID: 28138813.
      View in: PubMed
    11. Huber JS, Hernandez AM, Janabi M, O'Neil JP, Brennan KM, Murphy ST, Seo Y, Gullberg GT. Longitudinal Evaluation of Myocardial Fatty Acid and Glucose Metabolism in Fasted and Nonfasted Spontaneously Hypertensive Rats Using MicroPET/CT. Mol Imaging. 2017 Jan-Dec; 16:1536012117724558. PMID: 28877656.
      View in: PubMed
    12. Tran N, Giannakidis A, Gullberg GT, Seo Y. Quantitative analysis of hypertrophic myocardium using diffusion tensor magnetic resonance imaging. J Med Imaging (Bellingham). 2016 Oct; 3(4):046001. PMID: 27872872.
      View in: PubMed
    13. Giannakidis A, Melkus G, Yang G, Gullberg GT. On the averaging of cardiac diffusion tensor MRI data: the effect of distance function selection. Phys Med Biol. 2016 11 07; 61(21):7765-7786. PMID: 27754986.
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    14. Giannakidis A, Gullberg GT, Pennell DJ, Firmin DN. Value of Formalin Fixation for the Prolonged Preservation of Rodent Myocardial Microanatomical Organization: Evidence by MR Diffusion Tensor Imaging. Anat Rec (Hoboken). 2016 07; 299(7):878-87. PMID: 27111575.
      View in: PubMed
    15. Shrestha U, Sciammarella M, Alhassen F, Yeghiazarians Y, Ellin J, Verdin E, Boyle A, Seo Y, Botvinick EH, Gullberg GT. Measurement of absolute myocardial blood flow in humans using dynamic cardiac SPECT and 99mTc-tetrofosmin: Method and validation. J Nucl Cardiol. 2017 02; 24(1):268-277. PMID: 26715603.
      View in: PubMed
    16. Shrestha UM, Seo Y, Botvinick EH, Gullberg GT. Image reconstruction in higher dimensions: myocardial perfusion imaging of tracer dynamics with cardiac motion due to deformation and respiration. Phys Med Biol. 2015 Nov 07; 60(21):8275-301. PMID: 26450115.
      View in: PubMed
    17. Boutchko R, Mitra D, Baker SL, Jagust WJ, Gullberg GT. Clustering-initiated factor analysis application for tissue classification in dynamic brain positron emission tomography. J Cereb Blood Flow Metab. 2015 Jul; 35(7):1104-11. PMID: 25899294.
      View in: PubMed
    18. Veress AI, Fung GS, Lee TS, Tsui BM, Kicska GA, Paul Segars W, Gullberg GT. The direct incorporation of perfusion defect information to define ischemia and infarction in a finite element model of the left ventricle. J Biomech Eng. 2015 May; 137(5):051004. PMID: 25367177.
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    19. Zan Y, Boutchko R, Huang Q, Li B, Chen K, Gullberg GT. Longitudinal Evaluation of Sympathetic Nervous System and Perfusion in Normal and Spontaneously Hypertensive Rat Hearts with Dynamic Single-Photon Emission Computed Tomography. Mol Imaging. 2015; 14:373-84. PMID: 26162232.
      View in: PubMed
    20. Lee JH, Yao Y, Shrestha U, Gullberg GT, Seo Y. Handling Big Data in Medical Imaging: Iterative Reconstruction with Large-Scale Automated Parallel Computation. IEEE Nucl Sci Symp Conf Rec (1997). 2014 Nov; 2014. PMID: 27081299.
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    21. Shrestha U, Botvinick EH, Yeghiazarians Y, Seo Y, Gullberg GT. Quantitative Signature of Coronary Steal in a Patient with Occluded Coronary Arteries Supported by Collateral Circulation Using Dynamic SPECT. IEEE Nucl Sci Symp Conf Rec (1997). 2014 Nov; 2014. PMID: 27081301.
      View in: PubMed
    22. Lee TC, Ellin JR, Huang Q, Shrestha U, Gullberg GT, Seo Y. Multipinhole collimator with 20 apertures for a brain SPECT application. Med Phys. 2014 Nov; 41(11):112501. PMID: 25370660.
      View in: PubMed
    23. Abdalah M, Boutchko R, Mitra D, Gullberg GT. Reconstruction of 4-D dynamic SPECT images from inconsistent projections using a Spline initialized FADS algorithm (SIFADS). IEEE Trans Med Imaging. 2015 Jan; 34(1):216-28. PMID: 25167546.
      View in: PubMed
    24. Lee TC, Burghardt AJ, Yao W, Lane NE, Majumdar S, Gullberg GT, Seo Y. Improved trabecular bone structure of 20-month-old male spontaneously hypertensive rats. Calcif Tissue Int. 2014 Sep; 95(3):282-91. PMID: 25106873.
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    25. Wehrl HF, Wiehr S, Divine MR, Gatidis S, Gullberg GT, Maier FC, Rolle AM, Schwenck J, Thaiss WM, Pichler BJ. Preclinical and Translational PET/MR Imaging. J Nucl Med. 2014 Jun 01; 55(Supplement 2):11S-18S. PMID: 24833493.
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    26. Alhassen F, Nguyen N, Bains S, Gould RG, Seo Y, Bacharach SL, Song X, Shao L, Gullberg GT, Aparici CM. Myocardial blood flow measurement with a conventional dual-head SPECT/CT with spatiotemporal iterative reconstructions - a clinical feasibility study. Am J Nucl Med Mol Imaging. 2013; 4(1):53-9. PMID: 24380045.
      View in: PubMed
    27. Hernandez AM, Huber JS, Murphy ST, Janabi M, Zeng GL, Brennan KM, O'Neil JP, Seo Y, Gullberg GT. Longitudinal evaluation of left ventricular substrate metabolism, perfusion, and dysfunction in the spontaneously hypertensive rat model of hypertrophy using small-animal PET/CT imaging. J Nucl Med. 2013 Nov; 54(11):1938-45. PMID: 24092939.
      View in: PubMed
    28. Bowen JD, Huang Q, Ellin JR, Lee TC, Shrestha U, Gullberg GT, Seo Y. Design and performance evaluation of a 20-aperture multipinhole collimator for myocardial perfusion imaging applications. Phys Med Biol. 2013 Oct 21; 58(20):7209-26. PMID: 24061162.
      View in: PubMed
    29. Zan Y, Boutchko R, Huang Q, Li B, Chen K, Gullberg GT. Fast direct estimation of the blood input function and myocardial time activity curve from dynamic SPECT projections via reduction in spatial and temporal dimensions. Med Phys. 2013 Sep; 40(9):092503. PMID: 24007179.
      View in: PubMed
    30. Veress AI, Klein G, Gullberg GT. A Comparison of Hyperelastic Warping of PET Images with Tagged MRI for the Analysis of Cardiac Deformation. Int J Biomed Imaging. 2013; 2013:728624. PMID: 23843780.
      View in: PubMed
    31. Veress AI, Raymond GM, Gullberg GT, Bassingthwaighte JB. Left ventricular finite element model bounded by a systemic circulation model. J Biomech Eng. 2013 May; 135(5):54502. PMID: 24231963.
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    32. Boutchko R, Sitek A, Gullberg GT. Practical implementation of tetrahedral mesh reconstruction in emission tomography. Phys Med Biol. 2013 May 07; 58(9):3001-22. PMID: 23588373.
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    33. El Bitar Z, Huesman RH, Boutchko R, Bekaert V, Brasse D, Gullberg GT. A detector response function design in pinhole SPECT including geometrical calibration. Phys Med Biol. 2013 Apr 07; 58(7):2395-411. PMID: 23492938.
      View in: PubMed
    34. Zeng GL, Gullberg GT. On the bias of finite-view interior tomography using piecewise-constant and non-negativity constraints. Phys Med Biol. 2013 Mar 07; 58(5):L13-6. PMID: 23380877.
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    35. Zeng GL, Kadrmas DJ, Gullberg GT. Fourier domain closed-form formulas for estimation of kinetic parameters in reversible multi-compartment models. Biomed Eng Online. 2012 Sep 20; 11:70. PMID: 22995548.
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    36. Zeng GL, Hernandez A, Kadrmas DJ, Gullberg GT. Kinetic parameter estimation using a closed-form expression via integration by parts. Phys Med Biol. 2012 Sep 21; 57(18):5809-21. PMID: 22951326.
      View in: PubMed
    37. Zeng GL, Gullberg GT. Null-space function estimation for the interior problem. Phys Med Biol. 2012 Apr 07; 57(7):1873-87. PMID: 22421269.
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    38. Boutchko R, Rayz VL, Vandehey NT, O'Neil JP, Budinger TF, Nico PS, Druhan JL, Saloner DA, Gullberg GT, Moses WW. Imaging and modeling of flow in porous media using clinical nuclear emission tomography systems and computational fluid dynamics. J Appl Geophy. 2012 Jan; 76:74-81. PMID: 24917693.
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    39. Winant CD, Aparici CM, Zelnik YR, Reutter BW, Sitek A, Bacharach SL, Gullberg GT. Investigation of dynamic SPECT measurements of the arterial input function in human subjects using simulation, phantom and human studies. Phys Med Biol. 2012 Jan 21; 57(2):375-93. PMID: 22170801.
      View in: PubMed
    40. Fung GS, Segars WP, Gullberg GT, Tsui BM. Development of a model of the coronary arterial tree for the 4D XCAT phantom. Phys Med Biol. 2011 Sep 07; 56(17):5651-63. PMID: 21828911.
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    41. Lee KS, Roeck WW, Gullberg GT, Nalcioglu O. MR-based keyhole SPECT for small animal imaging. Phys Med Biol. 2011 Feb 07; 56(3):685-702. PMID: 21220840.
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    42. Reutter BW, Huesman RH, Brennan KM, Boutchko R, Hanrahan SM, Gullberg GT. Longitudinal Evaluation of Fatty Acid Metabolism in Normal and Spontaneously Hypertensive Rat Hearts with Dynamic MicroSPECT Imaging. Int J Mol Imaging. 2011; 2011:893129. PMID: 21490736.
      View in: PubMed
    43. Zeng GL, Gullberg GT, Kadrmas DJ. Closed-form kinetic parameter estimation solution to the truncated data problem. Phys Med Biol. 2010 Dec 21; 55(24):7453-68. PMID: 21098917.
      View in: PubMed
    44. Veress AI, Segars WP, Tsui BM, Gullberg GT. Incorporation of a left ventricle finite element model defining infarction into the XCAT imaging phantom. IEEE Trans Med Imaging. 2011 Apr; 30(4):915-27. PMID: 21041157.
      View in: PubMed
    45. Fung GS, Segars WP, Lee TS, Higuchi T, Veress AI, Gullberg GT, Tsui BM. Realistic Simulation of Regional Myocardial Perfusion Defects for Cardiac SPECT Studies. IEEE Nucl Sci Symp Conf Rec (1997). 2010 Oct-Nov; 2010:3061-3064. PMID: 26535552.
      View in: PubMed
    46. Gullberg GT, Reutter BW, Sitek A, Maltz JS, Budinger TF. Dynamic single photon emission computed tomography--basic principles and cardiac applications. Phys Med Biol. 2010 Oct 21; 55(20):R111-91. PMID: 20858925.
      View in: PubMed
    47. Zeng GL, Gullberg GT. SPECT region of interest reconstruction with truncated transmission and emission data. Med Phys. 2010 Sep; 37(9):4627-33. PMID: 20964181.
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    48. Zeng GL, Gullberg GT. Exact iterative reconstruction for the interior problem. Phys Med Biol. 2009 Oct 07; 54(19):5805-14. PMID: 19741279.
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    49. Huang Q, Xu J, Tsui BM, Gullberg GT. Reconstructing uniformly attenuated rotating slant-hole SPECT projection data using the DBH method. Phys Med Biol. 2009 Jul 07; 54(13):4325-39. PMID: 19531850.
      View in: PubMed
    50. Zeng GL, Gullberg GT. Exact emission SPECT reconstruction with truncated transmission data. Phys Med Biol. 2009 Jun 07; 54(11):3329-40. PMID: 19430109.
      View in: PubMed
    51. Huang Q, You J, Zeng GL, Gullberg GT. Reconstruction from uniformly attenuated SPECT projection data using the DBH method. IEEE Trans Med Imaging. 2009 Jan; 28(1):17-29. PMID: 19116185.
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    52. Veress AI, Weiss JA, Huesman RH, Reutter BW, Taylor SE, Sitek A, Feng B, Yang Y, Gullberg GT. Measuring regional changes in the diastolic deformation of the left ventricle of SHR rats using microPET technology and hyperelastic warping. Ann Biomed Eng. 2008 Jul; 36(7):1104-17. PMID: 18437574.
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    53. Hwang AB, Franc BL, Gullberg GT, Hasegawa BH. Assessment of the sources of error affecting the quantitative accuracy of SPECT imaging in small animals. Phys Med Biol. 2008 May 07; 53(9):2233-52. PMID: 18401059.
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    54. Rohmer D, Sitek A, Gullberg GT. Reconstruction and visualization of fiber and laminar structure in the normal human heart from ex vivo diffusion tensor magnetic resonance imaging (DTMRI) data. Invest Radiol. 2007 Nov; 42(11):777-89. PMID: 18030201.
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    55. Tang Q, Zeng GL, Gullberg GT. A Fourier reconstruction algorithm with constant attenuation compensation using 180 degrees acquisition data for SPECT. Phys Med Biol. 2007 Oct 21; 52(20):6165-79. PMID: 17921578.
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    56. Veress AI, Segars WP, Weiss JA, Tsui BM, Gullberg GT. Normal and pathological NCAT image and phantom data based on physiologically realistic left ventricle finite-element models. IEEE Trans Med Imaging. 2006 Dec; 25(12):1604-16. PMID: 17167995.
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    57. Sitek A, Huesman RH, Gullberg GT. Tomographic reconstruction using an adaptive tetrahedral mesh defined by a point cloud. IEEE Trans Med Imaging. 2006 Sep; 25(9):1172-9. PMID: 16967802.
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    58. Sitek A, Reutter BW, Huesman RH, Gullberg GT. Method of generating multiple sets of experimental phantom data. J Nucl Med. 2006 Jul; 47(7):1187-92. PMID: 16818954.
      View in: PubMed
    59. Defrise M, Gullberg GT. Image reconstruction. Phys Med Biol. 2006 Jul 07; 51(13):R139-54. PMID: 16790900.
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    60. Veress AI, Gullberg GT, Weiss JA. Measurement of strain in the left ventricle during diastole with cine-MRI and deformable image registration. J Biomech Eng. 2005 Dec; 127(7):1195-207. PMID: 16502662.
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    61. Tang Q, Zeng GL, Wu J, Gullberg GT. Exact fan-beam and 4pi-acquisition cone-beam SPECT algorithms with uniform attenuation correction. Med Phys. 2005 Nov; 32(11):3440-7. PMID: 16372416.
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    62. Tang Q, Zeng GL, Gullberg GT. Analytical fan-beam and cone-beam reconstruction algorithms with uniform attenuation correction for SPECT. Phys Med Biol. 2005 Jul 07; 50(13):3153-70. PMID: 15972987.
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    63. Huang Q, Zeng GL, You J, Gullberg GT. An FDK-like cone-beam SPECT reconstruction algorithm for non-uniform attenuated projections acquired using a circular trajectory. Phys Med Biol. 2005 May 21; 50(10):2329-39. PMID: 15876670.
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    64. Zeng GL, Gullberg GT. Cone-beam and fan-beam image reconstruction algorithms based on spherical and circular harmonics. Phys Med Biol. 2004 Jun 07; 49(11):2239-56. PMID: 15248575.
      View in: PubMed
    65. Cheryauka AB, Lee JN, Samsonov AA, Defrise M, Gullberg GT. MRI diffusion tensor reconstruction with PROPELLER data acquisition. Magn Reson Imaging. 2004 Feb; 22(2):139-48. PMID: 15010105.
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    66. Veress AI, Weiss JA, Gullberg GT, Vince DG, Rabbitt RD. Strain measurement in coronary arteries using intravascular ultrasound and deformable images. J Biomech Eng. 2002 Dec; 124(6):734-41. PMID: 12596642.
      View in: PubMed
    67. Reutter BW, Gullberg GT, Huesman RH. Effects of temporal modelling on the statistical uncertainty of spatiotemporal distributions estimated directly from dynamic SPECT projections. Phys Med Biol. 2002 Aug 07; 47(15):2673-83. PMID: 12200931.
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    68. Panin VY, Zeng GL, Defrise M, Gullberg GT. Diffusion tensor MR imaging of principal directions: a tensor tomography approach. Phys Med Biol. 2002 Aug 07; 47(15):2737-57. PMID: 12200936.
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    69. Feng B, Sitek A, Gullberg GT. Calculation of the left ventricular ejection fraction without edge detection: application to small hearts. J Nucl Med. 2002 Jun; 43(6):786-94. PMID: 12050324.
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    70. Sitek A, Gullberg GT, Huesman RH. Correction for ambiguous solutions in factor analysis using a penalized least squares objective. IEEE Trans Med Imaging. 2002 Mar; 21(3):216-25. PMID: 11989846.
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    71. Sitek A, Di Bella EV, Gullberg GT, Huesman RH. Removal of liver activity contamination in teboroxime dynamic cardiac SPECT imaging with the use of factor analysis. J Nucl Cardiol. 2002 Mar-Apr; 9(2):197-205. PMID: 11986565.
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    72. Sitek A, Gullberg GT, Di Bella EV, Celler A. Reconstruction of dynamic renal tomographic data acquired by slow rotation. J Nucl Med. 2001 Nov; 42(11):1704-12. PMID: 11696643.
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    73. Johnell O, Kanis J, Gullberg G. Mortality, morbidity, and assessment of fracture risk in male osteoporosis. Calcif Tissue Int. 2001 Oct; 69(4):182-4. PMID: 11730245.
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    74. Gullberg GT, Di Bella EV, Sinusas AJ. Estimation of coronary flow reserve: can SPECT compete with other modalities? J Nucl Cardiol. 2001 Sep-Oct; 8(5):620-5. PMID: 11593228.
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    75. Taguchi K, Zeng GL, Gullberg GT. Cone-beam image reconstruction using spherical harmonics. Phys Med Biol. 2001 Jun; 46(6):N127-38. PMID: 11419632.
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    76. Khare HS, Dibella EV, Kadrmas DJ, Christian PE, Gullberg GT. Comparison of Static and Dynamic Cardiac Perfusion Thallium-201 SPECT. IEEE Trans Nucl Sci. 2001 Jun; 48(3):774. PMID: 20107525.
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    77. Kadrmas DJ, Gullberg GT. 4D maximum a posteriori reconstruction in dynamic SPECT using a compartmental model-based prior. Phys Med Biol. 2001 May; 46(5):1553-74. PMID: 11384070.
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    78. Gullberg GT, Defrise M, Panin VY, Zeng GL. Efficient cardiac diffusion tensor MRI by three-dimensional reconstruction of solenoidal tensor fields. Magn Reson Imaging. 2001 Feb; 19(2):233-56. PMID: 11358662.
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    79. Laurette I, Zeng GL, Welch A, Christian PE, Gullberg GT. A three-dimensional ray-driven attenuation, scatter and geometric response correction technique for SPECT in inhomogeneous media. Phys Med Biol. 2000 Nov; 45(11):3459-80. PMID: 11098917.
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    80. Sitek A, Di Bella EV, Gullberg GT. Factor analysis with a priori knowledge--application in dynamic cardiac SPECT. Phys Med Biol. 2000 Sep; 45(9):2619-38. PMID: 11008961.
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    81. Kadrmas DJ, Di Bella EV, Khare HS, Christian PE, Gullberg GT. Static Versus Dynamic Teboroxime Myocardial Perfusion SPECT in Canines. IEEE Trans Nucl Sci. 2000 Jun 01; 47(3):1112-1117. PMID: 20090867.
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    82. Di Bella EV, Khare HS, Kadrmas DJ, Gullberg GT. SPECT Imaging of Teboroxime during Myocardial Blood Flow Changes. IEEE Trans Nucl Sci. 2000 Jun; 47(3):nihpa165910. PMID: 20098635.
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    83. Reutter BW, Gullberg GT, Huesman RH. Direct least-squares estimation of spatiotemporal distributions from dynamic SPECT projections using a spatial segmentation and temporal B-splines. IEEE Trans Med Imaging. 2000 May; 19(5):434-50. PMID: 11021687.
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    84. Zeng GL, Gullberg GT. Unmatched projector/backprojector pairs in an iterative reconstruction algorithm. IEEE Trans Med Imaging. 2000 May; 19(5):548-55. PMID: 11021698.
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    85. Bai C, Zeng GL, Gullberg GT. A slice-by-slice blurring model and kernel evaluation using the Klein-Nishina formula for 3D scatter compensation in parallel and converging beam SPECT. Phys Med Biol. 2000 May; 45(5):1275-307. PMID: 10843105.
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    86. Zeng GL, Bai C, Gullberg GT. A projector/backprojector with slice-to-slice blurring for efficient three-dimensional scatter modeling. IEEE Trans Med Imaging. 1999 Aug; 18(8):722-32. PMID: 10534054.
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    87. Kadrmas DJ, DiBella EV, Huesman RH, Gullberg GT. Analytical propagation of errors in dynamic SPECT: estimators, degrading factors, bias and noise. Phys Med Biol. 1999 Aug; 44(8):1997-2014. PMID: 10473210.
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    88. Di Bella EV, Clackdoyle R, Gullberg GT. Blind estimation of compartmental model parameters. Phys Med Biol. 1999 Mar; 44(3):765-80. PMID: 10211809.
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    89. Tsui BM, Frey EC, LaCroix KJ, Lalush DS, McCartney WH, King MA, Gullberg GT. Quantitative myocardial perfusion SPECT. J Nucl Cardiol. 1998 Sep-Oct; 5(5):507-22. PMID: 9796898.
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    90. Gullberg GT. Innovative design concepts for transmission CT in attenuation-corrected SPECT imaging. J Nucl Med. 1998 Aug; 39(8):1344-7. PMID: 9708503.
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    91. Nilsson P, Gullberg G, Ekesbo R, Von Schenck H, Gustafson L. No impaired cognitive function in treated patients with mild-moderate hypertension compared to normotensive controls. Blood Press. 1998 Jul; 7(4):209-13. PMID: 9858112.
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    92. Basko R, Zeng GL, Gullberg GT. Application of spherical harmonics to image reconstruction for the Compton camera. Phys Med Biol. 1998 Apr; 43(4):887-94. PMID: 9572512.
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    93. Frey EC, Tsui BM, Gullberg GT. Improved estimation of the detector response function for converging beam collimators. Phys Med Biol. 1998 Apr; 43(4):941-50. PMID: 9572517.
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    94. Zeng GL, Gullberg GT. Iterative and analytical reconstruction algorithms for varying-focal-length cone-beam projections. Phys Med Biol. 1998 Apr; 43(4):811-21. PMID: 9572506.
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    95. Huesman RH, Reutter BW, Zeng GL, Gullberg GT. Kinetic parameter estimation from SPECT cone-beam projection measurements. Phys Med Biol. 1998 Apr; 43(4):973-82. PMID: 9572520.
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    96. Hsieh YL, Zeng GL, Gullberg GT. Projection space image reconstruction using strip functions to calculate pixels more "natural" for modeling the geometric response of the SPECT collimator. IEEE Trans Med Imaging. 1998 Feb; 17(1):24-44. PMID: 9617905.
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    97. Zeng GL, Gullberg GT, Bai C, Christian PE, Trisjono F, Di Bella EV, Tanner JW, Morgan HT. Iterative reconstruction of fluorine-18 SPECT using geometric point response correction. J Nucl Med. 1998 Jan; 39(1):124-30. PMID: 9443751.
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    98. Gregoriou GK, Tsui BM, Gullberg GT. Effect of truncated projections on defect detection in attenuation-compensated fanbeam cardiac SPECT. J Nucl Med. 1998 Jan; 39(1):166-75. PMID: 9443757.
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    99. Welch A, Gullberg GT. Implementation of a model-based nonuniform scatter correction scheme for SPECT. IEEE Trans Med Imaging. 1997 Dec; 16(6):717-26. PMID: 9533573.
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    100. Ross SG, Welch A, Gullberg GT, Huesman RH. An investigation into the effect of input function shape and image acquisition interval on estimates of washin for dynamic cardiac SPECT. Phys Med Biol. 1997 Nov; 42(11):2193-213. PMID: 9394407.
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    101. Welch A, Clack R, Natterer F, Gullberg GT. Toward accurate attenuation correction in SPECT without transmission measurements. IEEE Trans Med Imaging. 1997 Oct; 16(5):532-41. PMID: 9368109.
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    102. Wan X, Gullberg GT, Parker DL, Zeng GL. Reduction of geometric and intensity distortions in echo-planar imaging using a multireference scan. Magn Reson Med. 1997 Jun; 37(6):932-42. PMID: 9178246.
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    103. Smith AM, Gullberg GT, Christian PE. Experimental verification of technetium 99m-labeled teboroxime kinetic parameters in the myocardium with dynamic single-photon emission computed tomography: reproducibility, correlation to flow, and susceptibility to extravascular contamination. J Nucl Cardiol. 1996 Mar-Apr; 3(2):130-42. PMID: 8799238.
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    104. Welch A, Smith AM, Gullberg GT. An investigation of the effect of finite system resolution and photon noise on the bias and precision of dynamic cardiac SPECT parameters. Med Phys. 1995 Nov; 22(11 Pt 1):1829-36. PMID: 8587537.
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    105. Welch A, Gullberg GT, Christian PE, Datz FL, Morgan HT. A transmission-map-based scatter correction technique for SPECT in inhomogeneous media. Med Phys. 1995 Oct; 22(10):1627-35. PMID: 8551987.
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    106. Wan X, Parker DL, Lee JN, Buswell HR, Gullberg GT. Reduction of phase error ghosting artifacts in thin slice fast spin-echo imaging. Magn Reson Med. 1995 Oct; 34(4):632-8. PMID: 8524034.
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    107. Ma X, Gullberg GT, Parker DL. Magnetic resonance imaging verification of a multi-compartment perfusion model for a chromatography gel phantom. Magn Reson Imaging. 1995; 13(4):581-98. PMID: 7674854.
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    108. Tung CH, Gullberg GT. A simulation of emission and transmission noise propagation in cardiac SPECT imaging with nonuniform attenuation correction. Med Phys. 1994 Oct; 21(10):1565-76. PMID: 7869988.
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    109. Viohl I, Gullberg GT. Tuning and matching networks for MR imaging and spectroscopy. J Magn Reson Imaging. 1994 Jul-Aug; 4(4):627-30. PMID: 7949693.
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    110. Smith AM, Gullberg GT, Christian PE, Datz FL. Kinetic modeling of teboroxime using dynamic SPECT imaging of a canine model. J Nucl Med. 1994 Mar; 35(3):484-95. PMID: 8113904.
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    111. Zeng GL, Clack R, Gullberg GT. Implementation of Tuy's cone-beam inversion formula. Phys Med Biol. 1994 Mar; 39(3):493-507. PMID: 15551594.
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    112. Li J, Jaszczak RJ, Wang H, Gullberg GT, Greer KL, Coleman RE. A cone beam SPECT reconstruction algorithm with a displaced center of rotation. Med Phys. 1994 Jan; 21(1):145-52. PMID: 8164581.
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    113. Datz FL, Gullberg GT, Zeng GL, Tung CH, Christian PE, Welch A, Clack R. Application of convergent-beam collimation and simultaneous transmission emission tomography to cardiac single-photon emission computed tomography. Semin Nucl Med. 1994 Jan; 24(1):17-37. PMID: 8122126.
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    114. Zeng GL, Gullberg GT. A backprojection filtering algorithm for a spatially varying focal length collimator. IEEE Trans Med Imaging. 1994; 13(3):549-56. PMID: 18218530.
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    115. Tsui BM, Terry JA, Gullberg GT. Evaluation of cardiac cone-beam single photon emission computed tomography using observer performance experiments and receiver operating characteristic analysis. Invest Radiol. 1993 Dec; 28(12):1101-12. PMID: 8307713.
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    116. Datz FL, Rosenberg C, Gabor FV, Christian PE, Gullberg GT, Ahluwalia R, Morton KA. The use of computer-assisted diagnosis in cardiac perfusion nuclear medicine studies: a review (Part 3) J Digit Imaging. 1993 May; 6(2):67-80. PMID: 8334175.
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    117. Datz FL, Gabor FV, Christian PE, Gullberg GT, Menzel CE, Morton KA. The use of computer-assisted diagnosis in cardiac perfusion nuclear medicine studies: a review (Part 2). J Digit Imaging. 1993 Feb; 6(1):1-15. PMID: 8439577.
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    118. Zeng GL, Gullberg GT, Jaszczak RJ, Li J. Fan-beam reconstruction algorithm for a spatially varying focal length collimator. IEEE Trans Med Imaging. 1993; 12(3):575-82. PMID: 18218451.
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    119. Datz FL, Gabor FV, Christian PE, Gullberg GT, Menzel CE, Morton KA. The use of computer-assisted diagnosis in cardiac-perfusion nuclear medicine studies: a review. J Digit Imaging. 1992 Nov; 5(4):209-22. PMID: 1457536.
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    120. Gullberg GT, Zeng GL, Datz FL, Christian PE, Tung CH, Morgan HT. Review of convergent beam tomography in single photon emission computed tomography. Phys Med Biol. 1992 Mar; 37(3):507-34. PMID: 1565688.
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    121. Zeng GL, Gullberg GT. A cone-beam tomography algorithm for orthogonal circle-and-line orbit. Phys Med Biol. 1992 Mar; 37(3):563-77. PMID: 1565691.
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    122. Gullberg GT, Zeng GL. A cone-beam filtered backprojection reconstruction algorithm for cardiac single photon emission computed tomography. IEEE Trans Med Imaging. 1992; 11(1):91-101. PMID: 18218361.
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    123. Gullberg GT, Christian PE, Zeng GL, Datz FL, Morgan HT. Cone beam tomography of the heart using single-photon emission-computed tomography. Invest Radiol. 1991 Jul; 26(7):681-8. PMID: 1885277.
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    124. Datz FL, Gullberg G, Gabor FV, Morton KA. SPECT myocardial perfusion imaging update. Semin Ultrasound CT MR. 1991 Feb; 12(1):28-44. PMID: 1825916.
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    125. Gullberg GT, Ma X, Parker DL, Roy DN. An MRI perfusion model incorporating nonequilibrium exchange between vascular and extravascular compartments. Magn Reson Imaging. 1991; 9(1):39-52. PMID: 2056850.
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    126. Gullberg GT, Zeng GS, Christian PE, Tsui BM, Morgan HT. Single photon emission computed tomography of the heart using cone beam geometry and noncircular detector rotation. Prog Clin Biol Res. 1991; 363:123-38. PMID: 1988968.
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    127. Parker DL, Gullberg GT. Signal-to-noise efficiency in magnetic resonance imaging. Med Phys. 1990 Mar-Apr; 17(2):250-7. PMID: 2333051.
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    128. Gullberg GT, Tsui BM, Crawford CR, Ballard JG, Hagius JT. Estimation of geometrical parameters and collimator evaluation for cone beam tomography. Med Phys. 1990 Mar-Apr; 17(2):264-72. PMID: 2333053.
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    129. Tsui BM, Gullberg GT. The geometric transfer function for cone and fan beam collimators. Phys Med Biol. 1990 Jan; 35(1):81-93. PMID: 2304971.
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    130. Tsui BM, Gullberg GT, Edgerton ER, Ballard JG, Perry JR, McCartney WH, Berg J. Correction of nonuniform attenuation in cardiac SPECT imaging. J Nucl Med. 1989 Apr; 30(4):497-507. PMID: 2786944.
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    131. Yuan C, Gullberg GT, Parker DL. Flow-induced phase effects and compensation technique for slice-selective pulses. Magn Reson Med. 1989 Feb; 9(2):161-76. PMID: 2716502.
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    132. Gullberg GT, Simons MA, Wehrli FW. A mathematical model for signal from spins flowing during the application of spin echo pulse sequences. Magn Reson Imaging. 1988 Jul-Aug; 6(4):437-61. PMID: 3185138.
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    133. Hahn LJ, Jaszczak RJ, Gullberg GT, Floyd CE, Manglos SH, Greer KL, Coleman RE. Noise characteristics for cone beam collimators: a comparison with parallel hole collimator. Phys Med Biol. 1988 May; 33(5):541-55. PMID: 3261015.
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    134. Crawford CR, Gullberg GT, Tsui BM. Reconstruction for fan beam with an angular-dependent displaced center-of-rotation. Med Phys. 1988 Jan-Feb; 15(1):67-71. PMID: 3258402.
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    135. Hu H, Gullberg GT, Kruger RA. Convolutional reconstruction algorithm for fan beam concave and convex circular detectors. IEEE Trans Med Imaging. 1988; 7(3):233-8. PMID: 18230474.
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    136. Yuan C, Gullberg GT, Parker DL. The solution of Bloch equations for flowing spins during a selective pulse using a finite difference method. Med Phys. 1987 Nov-Dec; 14(6):914-21. PMID: 3696079.
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    137. Gullberg GT, Wehrli FW, Shimakawa A, Simons MA. MR vascular imaging with a fast gradient refocusing pulse sequence and reformatted images from transaxial sections. Radiology. 1987 Oct; 165(1):241-6. PMID: 3628776.
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    138. Parker DL, Gullberg GT, Frederick PR. Gibbs artifact removal in magnetic resonance imaging. Med Phys. 1987 Jul-Aug; 14(4):640-5. PMID: 3627004.
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    139. Gullberg GT. An analytical approach to quantify uniformity artifacts for circular and noncircular detector motion in single photon emission computed tomography imaging. Med Phys. 1987 Jan-Feb; 14(1):105-14. PMID: 3494185.
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    140. Wehrli FW, Shimakawa A, Gullberg GT, MacFall JR. Time-of-flight MR flow imaging: selective saturation recovery with gradient refocusing. Radiology. 1986 Sep; 160(3):781-5. PMID: 3526407.
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    141. Tsui BM, Gullberg GT, Edgerton ER, Gilland DR, Perry JR, McCartney WH. Design and clinical utility of a fan beam collimator for SPECT imaging of the head. J Nucl Med. 1986 Jun; 27(6):810-9. PMID: 3486963.
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    142. Malko JA, Van Heertum RL, Gullberg GT, Kowalsky WP. SPECT liver imaging using an iterative attenuation correction algorithm and an external flood source. J Nucl Med. 1986 May; 27(5):701-5. PMID: 3486959.
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    143. Gullberg GT, Crawford CR, Tsui BM. Reconstruction Algorithm for Fan Beam with a Displaced Center-of-Rotation. IEEE Trans Med Imaging. 1986; 5(1):23-9. PMID: 18243979.
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    144. Gullberg GT, Huesman RH, Malko JA, Pelc NJ, Budinger TF. An attenuated projector-backprojector for iterative SPECT reconstruction. Phys Med Biol. 1985 Aug; 30(8):799-816. PMID: 3840265.
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    145. Malko JA, Gullberg GT, Kowalsky WP, Van Heertum RL. A count-based algorithm for attenuation-corrected volume determination using data from an external flood source. J Nucl Med. 1985 Feb; 26(2):194-200. PMID: 3968581.
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    146. Caldwell JH, Williams DL, Hamilton GW, Ritchie JL, Harp GD, Eisner RL, Gullberg GT, Nowak DJ. Regional distribution of myocardial blood flow measured by single-photon emission tomography: comparison with in vitro counting. J Nucl Med. 1982 Jun; 23(6):490-5. PMID: 6978934.
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    147. Gullberg GT, Budinger TF. The use of filtering methods to compensate for constant attenuation in single-photon emission computed tomography. IEEE Trans Biomed Eng. 1981 Feb; 28(2):142-57. PMID: 6974681.
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    148. Budinger TF, Derenzo SE, Greenberg WL, Gullberg GT, Huesman RH. Quantitative potentials of dynamic emission computed tomography. J Nucl Med. 1978 Mar; 19(3):309-15. PMID: 632910.
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    149. Budinger TF, Cahoon JL, Derenzo SE, Gullberg GT, Moyer BR, Yano Y. Three dimensional imaging of the myocardium with radionuclides. Radiology. 1977 Nov; 125(2):433-9. PMID: 910054.
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    150. Budinger TF, Derenzo SE, Gullberg GT, Greenberg WL, Huesman RH. Emission computer assisted tomography with single-photon and positron annihilation photon emitters. J Comput Assist Tomogr. 1977 Jan; 1(1):131-45. PMID: 615887.
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    151. Budinger TF, Gullberg GT. Letter: Three-dimensional reconstruction of isotope distributions. Phys Med Biol. 1974 May; 19(3):387-9. PMID: 4445217.
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