Roy Filly, MD

Title(s)Professor Emeritus, Radiology
SchoolSchool of Medicine
Address505 Parnassus Avenue
San Francisco CA 94117
Phone--
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    Collapse Biography 
    Collapse Education and Training
    Ohio State UniversityM.D.1970School of Medicine
    Collapse Awards and Honors
    Society of Radiologist in Ultrasound2011Keynote Speaker
    Society of Radiologists in Ultrasound2008First Recipient, Lawrence A. Mack Lifetime Achievement Award
    University of Texas, Southwestern, Dallas, TX2006Jack Reynolds Lecturer
    Los Angeles Radiological Society2005Honorary Leopold Lecturer
    American Institute of Ultrasound in Medicine2004Honorary Pioneer Award
    University of California, San Francisco2001Howard Steinbach Memorial Lecture Radiology Grand Rounds
    Award American Institute of Ultrasound in Medicine 1997William J. Fry Memorial Lecture
    University of Manchester England1991The Gray-Hartley Memorial Lecturer
    University of California, San Francisco1990The Walter W. Herbert Memorial Lecturer
    The John Hopkins School of Medicine1986David M. Gould Memorial Lecturer
    American Roentgen Ray Society1984Executive Council Award
    University of California, San Francisco School of Medicine1982Chief Residents Obstetrics and Gynecology Award
    University of California, San Francisco School of Medicine1981 Chief Residents Award Teaching Award
    Ohio State University1980Alumni Achievement Award
    University of California, San Francisco1978Hideyo Minagi Outstanding Teacher Award
    Stanford University1974Robert Reid Newel Award in Radiology
    Ohio State University1970Paul D. Meyer Award

    Collapse Overview 
    Collapse Overview
    Roy A. Filly, MD, is an Emeritus Professor of Radiology, Obstetrics, Gynecology and Reproductive Sciences at the University of California, San Francisco. He obtained his medical degree from Ohio State University College of Medicine, Columbus in 1970, and completed his residency at Stanford University Medical Center Division of Diagnostic Radiology, followed by a Chief Resident from Stanford University Medical Center Division of Diagnostic Radiology in 1974.

    Dr. Filly is Co-Founder of the UCSF Fetal Treatment Center, the pioneering organization known worldwide since 1981 as the “Birthplace of Fetal Surgery.”  Frequently featured in national and international news articles, Dr. Filly has received numerous awards, including the prestigious Pioneer Award of the World Federation of Ultrasound in Medicine and Biology and the Fry Memorial Award of the American Institute of Ultrasound in Medicine, the highest award for a North American sonologist. Dr. Filly is one of fewer than 100 worldwide fellows of the Society of Radiologists in Ultrasound, and he is also a fellow of the American Institute of Ultrasound in Medicine. 

    Dr. Filly has published more than 400 peer-reviewed manuscripts, and over 70 textbook chapters. He is the co-author of two books and an educational CD-ROM, Upper Abdominal Sonographic Anatomy.

    Expertise:
    Ultrasound

    Specialty:
    Fetal ultrasound, obstetrics and gynecology, pediatric ultrasound

    Professional Interests:
    Obstetrics, gynecology, reproductive sciences

    Education and Training:
    • Medical School: Ohio State University College of Medicine, Columbus
    • Internship: Case Western Reserve University, Cleveland, Ohio
    • Residency: Stanford University Medical Center Division of Diagnostic Radiology
    • Fellowship: Stanford University Medical Center Division of Diagnostic Radiology - Chief Resident
    • American Board of Radiology
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    Collapse ORNG Applications 
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    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. to make corrections and additions.
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    1. Interrater agreement for sonographic stomach position classification in fetal diaphragmatic hernia across the North American Fetal Therapy Network. Prenat Diagn. 2021 Apr 05. Abbasi N, Ryan G, Ruano R, Sanz Cortes M, Ye XY, Shah PS, Filly R, Benachi A, Johnson A, NAFTNet . PMID: 33817814.
      View in: PubMed   Mentions:    Fields:    
    2. Obstetric Sonography: Why Are We Still Terrifying Pregnant Women? J Ultrasound Med. 2018 Sep; 37(9):2277-2278. Filly RA, Norton ME. PMID: 29480571.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    3. Spleen Behind the Heart Complicates Lung-to-Head Ratio Measurement in Left-Sided Congenital Diaphragmatic Hernia. J Ultrasound Med. 2016 Dec; 35(12):2717-2721. Basta AM, Lusk LA, Keller RL, Filly RA. PMID: 27872422.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    4. Fetal stomach and gallbladder in contact with the bladder wall is a common ultrasound sign of stomach-down left congenital diaphragmatic hernia. J Clin Ultrasound. 2017 Jan; 45(1):8-13. Morgan TA, Basta A, Filly RA. PMID: 27663268.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    5. A Benign Anomalous Umbilical Vein: Not All Umbilical Veins That Wander Are Lost. Ultrasound Q. 2016 Mar; 32(1):47-50. Morgan TA, Salmeen K, Filly RA. PMID: 26938033.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    6. Fetal Stomach Position Predicts Neonatal Outcomes in Isolated Left-Sided Congenital Diaphragmatic Hernia. Fetal Diagn Ther. 2016; 39(4):248-55. Basta AM, Lusk LA, Keller RL, Filly RA. PMID: 26562540.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    7. Fetal ultrasound markers of severity predict resolution of pulmonary hypertension in congenital diaphragmatic hernia. Am J Obstet Gynecol. 2015 Aug; 213(2):216.e1-8. Lusk LA, Wai KC, Moon-Grady AJ, Basta AM, Filly R, Keller RL. PMID: 25797231.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    8. Outcomes for Prenatally Diagnosed Right Congenital Diaphragmatic Hernia. Fetal Diagn Ther. 2020; 47(1):1-6. Iqbal CW, Derderian SC, Lusk L, Basta A, Filly RA, Lee H, Hirose S. PMID: 25765922.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Testicular malakoplakia: a rare sonographic mimic of malignancy. J Clin Ultrasound. 2015 Mar; 43(3):199-202. Morgan TA, Rabban JT, Filly RA. PMID: 25237793.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    10. Impact of new society of radiologists in ultrasound early first-trimester diagnostic criteria for nonviable pregnancy. J Ultrasound Med. 2014 Sep; 33(9):1585-8. Hu M, Poder L, Filly RA. PMID: 25154939.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    11. Overlapping sutures: a new sign of a marked pressure effect in twin-twin transfusion syndrome. J Ultrasound Med. 2014 Mar; 33(3):547-9. Burger IM, Filly RA. PMID: 24567468.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. The fetal urinoma revisited. J Ultrasound Med. 2014 Jan; 33(1):161-6. Yitta S, Saadai P, Filly RA. PMID: 24371112.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    13. Diagnostic criteria for nonviable pregnancy early in the first trimester. N Engl J Med. 2013 Oct 10; 369(15):1443-51. Doubilet PM, Benson CB, Bourne T, Blaivas M, Society of Radiologists in Ultrasound Multispecialty Panel on Early First Trimester Diagnosis of Mis , Barnhart KT, Benacerraf BR, Brown DL, Filly RA, Fox JC, Goldstein SR, Kendall JL, Lyons EA, Porter MB, Pretorius DH, Timor-Tritsch IE. PMID: 24106937.
      View in: PubMed   Mentions: 32     Fields:    Translation:Humans
    14. The grand unifying theory of bright echoes in the fetal and neonatal brain. J Ultrasound Med. 2012 Oct; 31(10):1665-73. Burger IM, Filly RA, Bowie J, Barkovich AJ. PMID: 23011630.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    15. Value of "minimum menstrual age" in determining early pregnancy failure. J Ultrasound Med. 2011 Nov; 30(11):1553-9. Burger IM, Filly RA. PMID: 22039028.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    16. Multifocal nephrogenic adenoma of the bladder in a pediatric patient. J Ultrasound Med. 2010 Aug; 29(8):1239-41. Filly RA, Baskin LS. PMID: 20660459.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    17. Further observations on the empty "amnion sign". J Clin Ultrasound. 2010 Mar-Apr; 38(3):113-7. Yegul NT, Filly RA. PMID: 20127965.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. The expanded amnion sign: evidence of early embryonic death. J Ultrasound Med. 2010 Feb; 29(2):323-4; author reply 323-4. Wax JR, Pinette MG, Filly RA. PMID: 20103808.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    19. The yolk stalk sign: evidence of death in small embryos without heartbeats. J Ultrasound Med. 2010 Feb; 29(2):237-41. Filly MR, Callen PW, Yegul NT, Filly RA. PMID: 20103794.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    20. Supratentorial abnormalities in the Chiari II malformation, IV: the too-far-back ventricle. J Ultrasound Med. 2010 Feb; 29(2):243-8. Filly MR, Filly RA, Barkovich AJ, Goldstein RB. PMID: 20103795.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    21. Sonographic anatomy of the gastrohepatic ligament. J Ultrasound Med. 2010 Jan; 29(1):87-93. Desai G, Filly RA. PMID: 20040779.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    22. The expanded amnion sign: evidence of early embryonic death. J Ultrasound Med. 2009 Oct; 28(10):1331-5. Yegul NT, Filly RA. PMID: 19778879.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    23. Prognostic role of tumor-head volume ratio in fetal sacrococcygeal teratoma. Fetal Diagn Ther. 2009; 26(2):75-80. Sy ED, Filly RA, Cheong ML, Clifton MS, Cortes RA, Ohashi S, Takifuji K, Ventura DE, Grethel EJ, Wagner AJ, Gress EA, Ball RH, Lee H, Harrison MR. PMID: 19752518.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    24. Supratentorial abnormalities in the Chiari II malformation, III: The interhemispheric cyst. J Ultrasound Med. 2009 Aug; 28(8):999-1006. Wong SK, Barkovich AJ, Callen AL, Filly RA. PMID: 19643781.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    25. Prenatal detection of an extra-adrenal neuroblastoma with hepatic metastases. J Ultrasound Med. 2009 Aug; 28(8):1085-90. Desai G, Filly RA, Rand L. PMID: 19643793.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    26. "Empty" sac in pregnant women with bleeding: are measurements answering the right question? J Clin Ultrasound. 2009 Jun; 37(5):249-52. Aziz S, Cho RC, Baker DB, Chhor C, Filly RA. PMID: 19226513.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    27. A survey of bedside ultrasound use by emergency physicians in California. J Ultrasound Med. 2009 Jun; 28(6):757-63. Stein JC, River G, Kalika I, Hebig A, Price D, Jacoby VL, Filly R. PMID: 19470816.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    28. Type 1 congenital extrahepatic portosystemic shunt. J Ultrasound Med. 2009 May; 28(5):703-5. Sista AK, Filly RA. PMID: 19389913.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    29. Supratentorial abnormalities in the Chiari II malformation, II: tectal morphologic changes. J Ultrasound Med. 2009 Jan; 28(1):29-35. Callen AL, Stengel JW, Filly RA. PMID: 19106353.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    30. Five-millimeter and smaller embryos without embryonic cardiac activity: outcomes in women with vaginal bleeding. J Ultrasound Med. 2008 Nov; 27(11):1559-61. Aziz S, Cho RC, Baker DB, Chhor C, Filly RA. PMID: 18946094.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    31. Prenatal imaging: ultrasonography and magnetic resonance imaging. Obstet Gynecol. 2008 Jul; 112(1):145-57. Reddy UM, Filly RA, Copel JA, Pregnancy and Perinatology Branch, Eunice Kennedy Shriver National Institute of Child Health and Hum . PMID: 18591320.
      View in: PubMed   Mentions: 23     Fields:    Translation:Humans
    32. Paradoxical movements of abdominal contents indicating a congenital diaphragmatic hernia. J Ultrasound Med. 2008 Mar; 27(3):497. Sista AK, Filly RA. PMID: 18314533.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    33. The falling snow sign in an ovarian dermoid. J Ultrasound Med. 2008 Mar; 27(3):496. Sista AK, Filly RA. PMID: 18314530.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. Supratentorial abnormalities in the Chiari II malformation, I: the ventricular "point". J Ultrasound Med. 2008 Jan; 27(1):33-8. Callen AL, Filly RA. PMID: 18096728.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    35. Color Doppler sonography in evaluation of spermatoceles: the "falling snow" sign. J Ultrasound Med. 2008 Jan; 27(1):141-3. Sista AK, Filly RA. PMID: 18096740.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    36. Paradoxical movement of abdominal contents: a real-time sonographic finding indicating a congenital diaphragmatic hernia. J Ultrasound Med. 2007 Nov; 26(11):1617-9. Sista AK, Filly RA. PMID: 17957056.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    37. 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. Yang SH, Nobuhara KK, Keller RL, Ball RH, Goldstein RB, Feldstein VA, Callen PW, Filly RA, Farmer DL, Harrison MR, Lee H. PMID: 17618746.
      View in: PubMed   Mentions: 7     Fields:    Translation:HumansCTClinical Trials
    38. Prenatal imaging of congenital maxillomandibular fusion: case report and review of the literature. J Ultrasound Med. 2007 Mar; 26(3):381-9. Vahidi K, Joe BN, Glenn OA, Barkovich AJ, Filly R, Ball R, Coakley FV. PMID: 17324991.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    39. Maternal morbidity after maternal-fetal surgery. Am J Obstet Gynecol. 2006 Mar; 194(3):834-9. Golombeck K, Ball RH, Lee H, Farrell JA, Farmer DL, Jacobs VR, Rosen MA, Filly RA, Harrison MR. PMID: 16522421.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    40. Ultrasound screening of fetuses at increased risk for Down syndrome: how many missed diagnoses? Prenat Diagn. 2006 Jan; 26(1):22-7. Caughey AB, Lyell DJ, Washington AE, Filly RA, Norton ME. PMID: 16378329.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    41. The new obstetric ultrasound guidelines: some concerns. J Ultrasound Med. 2005 Dec; 24(12):1752-4. Schreckengost JL, Filly RA, American Institute of Ultrasound in Medicine , American College of Radiology , American College of Obstetricians and Gynecologists . PMID: 16301736.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    42. The likelihood ratio of sonographic findings for the diagnosis of hemorrhagic ovarian cysts. J Ultrasound Med. 2005 May; 24(5):607-14; quiz 615. Patel MD, Feldstein VA, Filly RA. PMID: 15840791.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    43. Syndromes with focal femoral deficiency: strengths and weaknesses of prenatal sonography. J Ultrasound Med. 2004 Nov; 23(11):1511-6. Filly AL, Robnett-Filly B, Filly RA. PMID: 15498917.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    44. Fetal relative lung volume: quantification by using prenatal MR imaging lung volumetry. Radiology. 2004 Nov; 233(2):457-62. Williams G, Coakley FV, Qayyum A, Farmer DL, Joe BN, Filly RA. PMID: 15459321.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    45. Echogenic intracardiac foci and choroid plexus cysts. J Ultrasound Med. 2004 Aug; 23(8):1135-8; author reply 1138-9. Filly RA. PMID: 15284476.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    46. Choroid plexus cyst and echogenic intracardiac focus in women at low risk for chromosomal anomalies. J Ultrasound Med. 2004 Apr; 23(4):447-9. Filly RA, Benacerraf BR, Nyberg DA, Hobbins JC. PMID: 15098860.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    47. Fetal MRI: a developing technique for the developing patient. AJR Am J Roentgenol. 2004 Jan; 182(1):243-52. Coakley FV, Glenn OA, Qayyum A, Barkovich AJ, Goldstein R, Filly RA. PMID: 14684546.
      View in: PubMed   Mentions: 49     Fields:    Translation:Humans
    48. A randomized trial of fetal endoscopic tracheal occlusion for severe fetal congenital diaphragmatic hernia. N Engl J Med. 2003 Nov 13; 349(20):1916-24. Harrison MR, Keller RL, Hawgood SB, Kitterman JA, Sandberg PL, Farmer DL, Lee H, Filly RA, Farrell JA, Albanese CT. PMID: 14614166.
      View in: PubMed   Mentions: 76     Fields:    Translation:HumansCTClinical Trials
    49. Echogenic intracardiac focus: potential for misdiagnosis. J Ultrasound Med. 2003 Nov; 22(11):1207-14; quiz 1216-7. Winn VD, Sonson J, Filly RA. PMID: 14620892.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    50. The neonatal diaphragmatic crura are hypertrophied: a necessary preparation for the first breath? J Ultrasound Med. 2003 Jul; 22(7):715-8. Moes MJ, Filly RA. PMID: 12862271.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    51. Complications of monochorionic twins. Radiol Clin North Am. 2003 Jul; 41(4):709-27. Feldstein VA, Filly RA. PMID: 12899487.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    52. Fetoscopic temporary tracheal occlusion for congenital diaphragmatic hernia: prelude to a randomized, controlled trial. J Pediatr Surg. 2003 Jul; 38(7):1012-20. Harrison MR, Sydorak RM, Farrell JA, Kitterman JA, Filly RA, Albanese CT. PMID: 12861529.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    53. Presumptive intrahepatic congenital cystic adenomatoid malformation. J Ultrasound Med. 2003 May; 22(5):531-6. Markhardt BK, Farmer DL, Filly RA. PMID: 12751866.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    54. Is it time for the sonoscope? If so, then let's do it right! J Ultrasound Med. 2003 Apr; 22(4):323-5. Filly RA. PMID: 12693615.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    55. Adverse birth outcomes in relation to prenatal sonographic measurements of fetal size. J Ultrasound Med. 2003 Apr; 22(4):347-56; quiz 357-8. Smith-Bindman R, Chu PW, Ecker J, Feldstein VA, Filly RA, Bacchetti P. PMID: 12693618.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    56. Prenatal sonography and MR imaging of pulmonary sequestration. AJR Am J Roentgenol. 2003 Feb; 180(2):433-7. Dhingsa R, Coakley FV, Albanese CT, Filly RA, Goldstein R. PMID: 12540448.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    57. Sonographic detection of gallbladder duplication: two cases discovered in utero. J Ultrasound Med. 2002 Dec; 21(12):1417-21. Kinoshita LL, Callen PW, Filly RA, Hill LM. PMID: 12494985.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    58. Sonographic evaluation of liver nodularity: Inspection of deep versus superficial surfaces of the liver. J Clin Ultrasound. 2002 Sep; 30(7):399-407. Filly RA, Reddy SG, Nalbandian AB, Lu Y, Callen PW. PMID: 12210457.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    59. Routine obstetric sonography. J Ultrasound Med. 2002 Jul; 21(7):713-8. Filly RA, Crane JP. PMID: 12099557.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansPHPublic Health
    60. Chorioamniotic membrane separation following fetal surgery. J Perinatol. 2002 Jul-Aug; 22(5):407-10. Sydorak RM, Hirose S, Sandberg PL, Filly RA, Harrison MR, Farmer DL, Albanese CT. PMID: 12082478.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    61. US evaluation of fetal growth: prediction of neonatal outcomes. Radiology. 2002 Apr; 223(1):153-61. Smith-Bindman R, Chu PW, Ecker JL, Feldstein VA, Filly RA, Bacchetti P. PMID: 11930060.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    62. Entrapped fourth ventricle: another pitfall in the prenatal diagnosis of Dandy-Walker malformations. J Ultrasound Med. 2002 Jan; 21(1):91-6. Tsao K, Chuang NA, Filly RA, Barkovich AJ, Goldstein RB. PMID: 11794408.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
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