Roy Filly, MD

Professor Emeritus

Biography

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

Education

M.D., 1970 - School of Medicine, Ohio State University

Honors and Awards

Keynote Speaker, Society of Radiologist in Ultrasound, 2011
First Recipient, Lawrence A. Mack Lifetime Achievement Award, Society of Radiologists in Ultrasound, 2008
Jack Reynolds Lecturer, University of Texas, Southwestern, Dallas, TX, 2006
Honorary Leopold Lecturer, Los Angeles Radiological Society, 2005
Honorary Pioneer Award, American Institute of Ultrasound in Medicine, 2004
Howard Steinbach Memorial Lecture Radiology Grand Rounds, University of California, San Francisco, 2001
William J. Fry Memorial Lecture, Award American Institute of Ultrasound in Medicine, 1997
The Gray-Hartley Memorial Lecturer, University of Manchester England, 1991
The Walter W. Herbert Memorial Lecturer, University of California, San Francisco, 1990
David M. Gould Memorial Lecturer, The John Hopkins School of Medicine, 1986
Executive Council Award, American Roentgen Ray Society, 1984
Chief Residents Obstetrics and Gynecology Award, University of California, San Francisco School of Medicine, 1982
Chief Residents Award Teaching Award, University of California, San Francisco School of Medicine, 1981
Alumni Achievement Award, Ohio State University, 1980
Hideyo Minagi Outstanding Teacher Award, University of California, San Francisco, 1978
Robert Reid Newel Award in Radiology, Stanford University, 1974
Paul D. Meyer Award, Ohio State University, 1970

Publications

Filly RA, Norton ME. Obstetric Sonography: Why Are We Still Terrifying Pregnant Women? J Ultrasound Med. 2018 Feb 26.
Basta AM, Lusk LA, Keller RL, Filly RA. 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.
Morgan TA, Basta A, Filly RA. 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, Salmeen K, Filly RA. A Benign Anomalous Umbilical Vein: Not All Umbilical Veins That Wander Are Lost. Ultrasound Q. 2016 Mar; 32(1):47-50.
Basta AM, Lusk LA, Keller RL, Filly RA. Fetal Stomach Position Predicts Neonatal Outcomes in Isolated Left-Sided Congenital Diaphragmatic Hernia. Fetal Diagn Ther. 2016; 39(4):248-55.
Lusk LA, Wai KC, Moon-Grady AJ, Basta AM, Filly R, Keller RL. 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.
Iqbal CW, Derderian SC, Lusk L, Basta A, Filly RA, Lee H, Hirose S. Outcomes for Prenatally Diagnosed Right Congenital Diaphragmatic Hernia. Fetal Diagn Ther. 2015 Mar 04.
Morgan TA, Rabban JT, Filly RA. Testicular malakoplakia: a rare sonographic mimic of malignancy. J Clin Ultrasound. 2015 Mar; 43(3):199-202.
Hu M, Poder L, Filly RA. 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.
Burger IM, Filly RA. Overlapping sutures: a new sign of a marked pressure effect in twin-twin transfusion syndrome. J Ultrasound Med. 2014 Mar; 33(3):547-9.
Yitta S, Saadai P, Filly RA. The fetal urinoma revisited. J Ultrasound Med. 2014 Jan; 33(1):161-6.
Doubilet PM, Benson CB, Bourne T, Blaivas M. Diagnostic criteria for nonviable pregnancy early in the first trimester. N Engl J Med. 2013 Oct 10; 369(15):1443-51.
Burger IM, Filly RA, Bowie J, Barkovich AJ. 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. Value of "minimum menstrual age" in determining early pregnancy failure. J Ultrasound Med. 2011 Nov; 30(11):1553-9.
Filly RA, Baskin LS. Multifocal nephrogenic adenoma of the bladder in a pediatric patient. J Ultrasound Med. 2010 Aug; 29(8):1239-41.
Yegul NT, Filly RA. Further observations on the empty "amnion sign". J Clin Ultrasound. 2010 Mar-Apr; 38(3):113-7.
Filly MR, Filly RA, Barkovich AJ, Goldstein RB. Supratentorial abnormalities in the Chiari II malformation, IV: the too-far-back ventricle. J Ultrasound Med. 2010 Feb; 29(2):243-8.
Wax JR, Pinette MG, Filly RA. The expanded amnion sign: evidence of early embryonic death. J Ultrasound Med. 2010 Feb; 29(2):323-4; author reply 323-4.
Filly MR, Callen PW, 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.
Desai G, Filly RA. Sonographic anatomy of the gastrohepatic ligament. J Ultrasound Med. 2010 Jan; 29(1):87-93.
Yegul NT, Filly RA. The expanded amnion sign: evidence of early embryonic death. J Ultrasound Med. 2009 Oct; 28(10):1331-5.
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. Prognostic role of tumor-head volume ratio in fetal sacrococcygeal teratoma. Fetal Diagn Ther. 2009; 26(2):75-80.
Desai G, Filly RA, Rand L. Prenatal detection of an extra-adrenal neuroblastoma with hepatic metastases. J Ultrasound Med. 2009 Aug; 28(8):1085-90.
Wong SK, Barkovich AJ, Callen AL, Filly RA. Supratentorial abnormalities in the Chiari II malformation, III: The interhemispheric cyst. J Ultrasound Med. 2009 Aug; 28(8):999-1006.
Aziz S, Cho RC, Baker DB, Chhor C, Filly RA. "Empty" sac in pregnant women with bleeding: are measurements answering the right question? J Clin Ultrasound. 2009 Jun; 37(5):249-52.
Stein JC, River G, Kalika I, Hebig A, Price D, Jacoby VL, Filly R. A survey of bedside ultrasound use by emergency physicians in California. J Ultrasound Med. 2009 Jun; 28(6):757-63.
Sista AK, Filly RA. Type 1 congenital extrahepatic portosystemic shunt. J Ultrasound Med. 2009 May; 28(5):703-5.
Callen AL, Stengel JW, Filly RA. Supratentorial abnormalities in the Chiari II malformation, II: tectal morphologic changes. J Ultrasound Med. 2009 Jan; 28(1):29-35.
Aziz S, Cho RC, Baker DB, Chhor C, Filly RA. Five-millimeter and smaller embryos without embryonic cardiac activity: outcomes in women with vaginal bleeding. J Ultrasound Med. 2008 Nov; 27(11):1559-61.
Reddy UM, Filly RA, Copel JA. Prenatal imaging: ultrasonography and magnetic resonance imaging. Obstet Gynecol. 2008 Jul; 112(1):145-57.
Sista AK, Filly RA. Paradoxical movements of abdominal contents indicating a congenital diaphragmatic hernia. J Ultrasound Med. 2008 Mar; 27(3):497.
Sista AK, Filly RA. The falling snow sign in an ovarian dermoid. J Ultrasound Med. 2008 Mar; 27(3):496.
Sista AK, Filly RA. Color Doppler sonography in evaluation of spermatoceles: the "falling snow" sign. J Ultrasound Med. 2008 Jan; 27(1):141-3.
Callen AL, Filly RA. Supratentorial abnormalities in the Chiari II malformation, I: the ventricular "point". J Ultrasound Med. 2008 Jan; 27(1):33-8.
Sista AK, Filly RA. Paradoxical movement of abdominal contents: a real-time sonographic finding indicating a congenital diaphragmatic hernia. J Ultrasound Med. 2007 Nov; 26(11):1617-9.
Yang SH, Nobuhara KK, Keller RL, Ball RH, Goldstein RB, Feldstein VA, Callen PW, 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.
Vahidi K, Joe BN, Glenn OA, Barkovich AJ, Filly R, Ball R, Coakley FV. Prenatal imaging of congenital maxillomandibular fusion: case report and review of the literature. J Ultrasound Med. 2007 Mar; 26(3):381-9.
Golombeck K, Ball RH, Lee H, Farrell JA, Farmer DL, Jacobs VR, Rosen MA, Filly RA, Harrison MR. Maternal morbidity after maternal-fetal surgery. Am J Obstet Gynecol. 2006 Mar; 194(3):834-9.
Caughey AB, Lyell DJ, Washington AE, Filly RA, Norton ME. Ultrasound screening of fetuses at increased risk for Down syndrome: how many missed diagnoses? Prenat Diagn. 2006 Jan; 26(1):22-7.
Schreckengost JL, Filly RA. The new obstetric ultrasound guidelines: some concerns. J Ultrasound Med. 2005 Dec; 24(12):1752-4.
Patel MD, Feldstein VA, Filly RA. The likelihood ratio of sonographic findings for the diagnosis of hemorrhagic ovarian cysts. J Ultrasound Med. 2005 May; 24(5):607-14; quiz 615.
Filly AL, Robnett-Filly B, Filly RA. Syndromes with focal femoral deficiency: strengths and weaknesses of prenatal sonography. J Ultrasound Med. 2004 Nov; 23(11):1511-6.
Williams G, Coakley FV, Qayyum A, Farmer DL, Joe BN, Filly RA. Fetal relative lung volume: quantification by using prenatal MR imaging lung volumetry. Radiology. 2004 Nov; 233(2):457-62.
Filly RA. Echogenic intracardiac foci and choroid plexus cysts. J Ultrasound Med. 2004 Aug; 23(8):1135-8; author reply 1138-9.
Filly RA, Benacerraf BR, Nyberg DA, Hobbins JC. Choroid plexus cyst and echogenic intracardiac focus in women at low risk for chromosomal anomalies. J Ultrasound Med. 2004 Apr; 23(4):447-9.
Coakley FV, Glenn OA, Qayyum A, Barkovich AJ, Goldstein R, Filly RA. Fetal MRI: a developing technique for the developing patient. AJR Am J Roentgenol. 2004 Jan; 182(1):243-52.
Harrison MR, Keller RL, Hawgood SB, Kitterman JA, Sandberg PL, Farmer DL, Lee H, Filly RA, Farrell JA, Albanese CT. 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.
Winn VD, Sonson J, Filly RA. Echogenic intracardiac focus: potential for misdiagnosis. J Ultrasound Med. 2003 Nov; 22(11):1207-14; quiz 1216-7.
Feldstein VA, Filly RA. Complications of monochorionic twins. Radiol Clin North Am. 2003 Jul; 41(4):709-27.
Harrison MR, Sydorak RM, Farrell JA, Kitterman JA, Filly RA, Albanese CT. Fetoscopic temporary tracheal occlusion for congenital diaphragmatic hernia: prelude to a randomized, controlled trial. J Pediatr Surg. 2003 Jul; 38(7):1012-20.
Moes MJ, Filly RA. The neonatal diaphragmatic crura are hypertrophied: a necessary preparation for the first breath? J Ultrasound Med. 2003 Jul; 22(7):715-8.
Markhardt BK, Farmer DL, Filly RA. Presumptive intrahepatic congenital cystic adenomatoid malformation. J Ultrasound Med. 2003 May; 22(5):531-6.
Smith-Bindman R, Chu PW, Ecker J, Feldstein VA, Filly RA, Bacchetti P. Adverse birth outcomes in relation to prenatal sonographic measurements of fetal size. J Ultrasound Med. 2003 Apr; 22(4):347-56; quiz 357-8.
Filly RA. Is it time for the sonoscope? If so, then let's do it right! J Ultrasound Med. 2003 Apr; 22(4):323-5.
Dhingsa R, Coakley FV, Albanese CT, Filly RA, Goldstein R. Prenatal sonography and MR imaging of pulmonary sequestration. AJR Am J Roentgenol. 2003 Feb; 180(2):433-7.
Kinoshita LL, Callen PW, Filly RA, Hill LM. Sonographic detection of gallbladder duplication: two cases discovered in utero. J Ultrasound Med. 2002 Dec; 21(12):1417-21.
Filly RA, Reddy SG, Nalbandian AB, Lu Y, Callen PW. Sonographic evaluation of liver nodularity: Inspection of deep versus superficial surfaces of the liver. J Clin Ultrasound. 2002 Sep; 30(7):399-407.
Sydorak RM, Hirose S, Sandberg PL, Filly RA, Harrison MR, Farmer DL, Albanese CT. Chorioamniotic membrane separation following fetal surgery. J Perinatol. 2002 Jul-Aug; 22(5):407-10.
Filly RA, Crane JP. Routine obstetric sonography. J Ultrasound Med. 2002 Jul; 21(7):713-8.
Smith-Bindman R, Chu PW, Ecker JL, Feldstein VA, Filly RA, Bacchetti P. US evaluation of fetal growth: prediction of neonatal outcomes. Radiology. 2002 Apr; 223(1):153-61.
Tsao K, Chuang NA, Filly RA, Barkovich AJ, Goldstein RB. Entrapped fourth ventricle: another pitfall in the prenatal diagnosis of Dandy-Walker malformations. J Ultrasound Med. 2002 Jan; 21(1):91-6.