Peter Callen, MD

InstitutionUniversity of California San Francisco
Address505 Parnassus Avenue
San Francisco CA 94117
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    Collapse Biography 
    Collapse Education and Training
    University of California, San Francisco Residency School of Medicine
    University of California, San FranciscoM.D.1973 Medicine
    Collapse Awards and Honors
    University of California, San Francisco2010Outstanding Alumni Award
    American Institute of Ultrasound in Medicine1986Fellow
    University of California, San Francisco Department of Obstetrics and Gynecology1982Commendation for Excellence in Teaching

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    Collapse Overview
    Dr. Peter W. Callen, MD, is a Professor of Radiology, Obstetrics, Gynecology, and Reproduction Sciences at the University of California, San Francisco. He obtained his medical degree from the University of California, San Francisco in 1973, and completed his residency in Diagnostic Radiology from UCSF in 1977, followed by a fellowship at the University of California, San Francisco.

    Dr. Callen’s general research has been focused on discovering the sonographic signs that allow the sonographer to detect abnormalities and avoid false positive diagnosis of abnormalities in the obstetric, pediatric and adult patient. A specific area of interest has been in fetal dysmorphology and the detection of abnormalities involving the fetal, neural axis, thorax, skeletal system, genitourinary tract, gastrointestinal, and abnormalities of the placenta and umbilical cord.

    Dr. Callen has published more than 200 peer-reviewed articles, and 65 book chapters. He is well known for his textbook, Ultrasonography in Obstetric and Gynecology, now in its fifth edition and considered the most extensively used book on obstetrical ultrasound worldwide.


    Obstetrical, gynecology, pediatric urology

    Professional Interests:
    Obstetrical ultrasound, fetal dysmorphology, internet based learning, application of PACS systems to diagnostic ultrasound, perception of normal and abnormal findings at the time of ultrasound examination

    Education and Training:
    • Medical School: University of California, San Francisco School of Medicine
    • Internship: University of California, San Francisco - Medicine
    • Residency: University of California, San Francisco - Diagnostic Radiology
    • Fellowship: University of California, San Francisco
    • National Board of Medical Examiners
    • California Medical License
    • American Board of Radiology

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    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. Shoo BA, Kangelaris G, Callen P, Kashani-Sabet M, Leong SP. Detection of occult melanoma by preoperative positron emission tomography-computed tomography and intraoperative ultrasonography. J Cutan Med Surg. 2010 May-Jun; 14(3):130-5. PMID: 20487673.
      View in: PubMed
    2. Filly MR, Callen P, Yegul NT, Filly RA. The yolk stalk sign: evidence of death in small embryos without heartbeats. J Ultrasound Med. 2010 Feb; 29(2):237-41. PMID: 20103794.
      View in: PubMed
    3. Qayyum A, Chen DM, Breiman RS, Westphalen AC, Yeh BM, Jones KD, Lu Y, Coakley FV, Callen P. Evaluation of diffuse liver steatosis by ultrasound, computed tomography, and magnetic resonance imaging: which modality is best? Clin Imaging. 2009 Mar-Apr; 33(2):110-5. PMID: 19237053; PMCID: PMC2743961.
    4. Kassab A, El-Bialy G, Hashesh H, Callen P. Magnetic resonance imaging and hysteroscopy to diagnose colo-uterine fistula: a rare complication of diverticulitis. J Obstet Gynaecol Res. 2008 Feb; 34(1):117-20. PMID: 18226143.
      View in: PubMed
    5. Callen P, Callen AL, Glenn OA, Toi A. Columns of the fornix, not to be mistaken for the cavum septi pellucidi on prenatal sonography. J Ultrasound Med. 2008 Jan; 27(1):25-31. PMID: 18096727.
      View in: PubMed
    6. Glenn OA, Bianco K, Barkovich AJ, Callen P, Parer JT. Fetal cerebellar hemorrhage in parvovirus-associated non-immune hydrops fetalis. J Matern Fetal Neonatal Med. 2007 Oct; 20(10):769-72. PMID: 17763280.
      View in: PubMed
    7. Yang SH, Nobuhara KK, Keller RL, Ball RH, Goldstein RB, Feldstein VA, Callen P, Filly RA, Farmer DL, Harrison MR, Lee H. Reliability of the lung-to-head ratio as a predictor of outcome in fetuses with isolated left congenital diaphragmatic hernia at gestation outside 24-26 weeks. Am J Obstet Gynecol. 2007 Jul; 197(1):30.e1-7. PMID: 17618746.
      View in: PubMed
    8. Aziz S, Callen P, Vincenti F, Hirose R. Rapidly developing nephrocalcinosis in a patient with end-stage liver disease who received a domino liver transplant from a patient with known congenital oxalosis. J Ultrasound Med. 2005 Oct; 24(10):1449-52. PMID: 16179633.
      View in: PubMed
    9. Wu YW, Hamrick SE, Miller SP, Haward MF, Lai MC, Callen P, Barkovich AJ, Ferriero DM. Intraventricular hemorrhage in term neonates caused by sinovenous thrombosis. Ann Neurol. 2003 Jul; 54(1):123-6. PMID: 12838529.
      View in: PubMed
    10. Kinoshita LL, Callen P, Filly RA, Hill LM. Sonographic detection of gallbladder duplication: two cases discovered in utero. J Ultrasound Med. 2002 Dec; 21(12):1417-21. PMID: 12494985.
      View in: PubMed
    11. Paek BW, Callen P, Kitterman J, Feldstein VA, Farrell J, Harrison MR, Albanese CT. Successful fetal intervention for congenital high airway obstruction syndrome. Fetal Diagn Ther. 2002 Sep-Oct; 17(5):272-6. PMID: 12169810.
      View in: PubMed
    12. Filly RA, Reddy SG, Nalbandian AB, Lu Y, Callen P. Sonographic evaluation of liver nodularity: Inspection of deep versus superficial surfaces of the liver. J Clin Ultrasound. 2002 Sep; 30(7):399-407. PMID: 12210457.
      View in: PubMed
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