Ronald Zagoria, MD

Chief of Abdominal Imaging
Vice Chair of Clinical Affairs


Ronald Zagoria, MD, FACR, is a Professor in Residence and Chief of the Abdominal Imaging section in the Department of Radiology and Biomedical Imaging at the University of California, San Francisco. He earned his medical degree from the University of Maryland School of Medicine, Baltimore, Maryland. In 1987, he completed a four-year Diagnostic Radiology residency, as well as a fellowship in Abdominal Imaging and Interventional Radiology from the Bowman Gray School of Medicine in Winston-Salem, North Carolina. Dr. Zagoria was Vice-Chair and Head of the Abdominal Radiology Section (2000-2011), and he chaired as an interim in the Department of Radiology at Wake Forest University School of Medicine in Winston-Salem, North Carolina, from 2011-2012. In June 2013, Dr. Zagoria accepted the position of Professor in Residence and Chief of Abdominal Imaging at UCSF. As of December 2013, Dr. Zagoria accepted the position of Vice-chair of Clinical Affairs.

Dr. Zagoria is a fellow in the American College of Radiology, the Society of Abdominal Radiology, and the European Society of Uroradiology. He formerly served on and chaired the Residency Review Committee for Diagnostic Radiology. Dr. Zagoria was the President of the Society of Uroradiology and of the Association of Program Directors in Radiology. He was the first Vice President of the RSNA, and he is the Editor-in-Chief of the Emergency Radiology.

Dr. Zagoria has been appointed Principal and Co-Principal Investigator on several research grant projects. He has been invited to over 300 lectures and presentations, and he has written over 300 publications, which includes textbooks, book chapters, journal articles, and abstracts.

Abdominal Imaging


Professional Interests:
Uro-oncology, urolithiasis, infertility, imaging and treatment, and contrast materials

Education and Training:
• Medical School: University of Maryland School of Medicine, Baltimore
• Residency: Bowman Gray School of Medicine, Winston-Salem, North Carolina
• Fellowship: Bowman Gray School of Medicine, Winston-Salem, North Carolina - Abdominal Imaging and Interventional Radiology
• American Board of Radiology Certification
• American Board of Radiology Certificate of Added Qualifications in Vascular and Interventional Radiology


M.D., 1983 - School of Medicine, University of Maryland

Honors and Awards

Vice-Chair of Clinical Affairs, University of California, San Francisco, 2013
Award For Teaching Excellence, Bowman Gray School of Medicine, 2000
Fellowship, American College of Radiology, 1999
Fellowship in Radiology Journalism, American Roentgen Ray Society, 1995
Bowman Gray School of Medicine, Award for Teaching Excellence, 1993
Outstanding Radiology Resident, Bowman Gray School of Medicine Wake Forest University, 1987
Chief Resident, Bowman Gray School of Medicine Wake Forest University, 1986-1987
Alpha Omega Alpha Medical Honor Society, 1983


Wang ZJ, Westphalen AC, Zagoria RJ. CT and MRI of small renal masses. Br J Radiol. 2018 May 10; 20180131.
Jordan EJ, Fiske C, Zagoria R, Westphalen AC. PI-RADS v2 and ADC values: is there room for improvement? Abdom Radiol (NY). 2018 Mar 17.
Marcus SG, Candia S, Kohli MD, Mongan J, Zagoria RJ, Behr SC, Sun D, Westphalen AC. Association between misty mesentery with baseline or new diagnosis of cancer: a matched cohort study. Clin Imaging. 2017 Dec 15; 50:57-61.
Jordan EJ, Fiske C, Zagoria RJ, Westphalen AC. Evaluating the performance of PI-RADS v2 in the non-academic setting. Abdom Radiol (NY). 2017 Nov; 42(11):2725-2731.
Wang ZJ, Zagoria RJ. Invited Commentary on "Differentiation of Solid Renal Tumors with Multiparametric MR Imaging". Radiographics. 2017 Nov-Dec; 37(7):2042-2044.
Garcia-Reyes K, Nguyen HG, Zagoria RJ, Shinohara K, Carroll PR, Behr SC, Westphalen AC. Impact of Lesion Visibility on Transrectal Ultrasound on the Prediction of Clinically Significant Prostate Cancer (Gleason Score 3 + 4 or Greater) with Transrectal Ultrasound-Magnetic Resonance Imaging Fusion Biopsy. J Urol. 2017 Sep 20.
Lake ST, Greene KL, Westphalen AC, Behr SC, Zagoria R, Small EJ, Carroll PR, Hope TA. Optimal MRI sequences for 68Ga-PSMA-11 PET/MRI in evaluation of biochemically recurrent prostate cancer. EJNMMI Res. 2017 Sep 19; 7(1):77.
Leapman MS, Wang ZJ, Behr SC, Kurhanewicz J, Zagoria RJ, Carroll PR, Westphalen AC. Impact of the integration of proton magnetic resonance imaging spectroscopy to PI-RADS 2 for prediction of high grade and high stage prostate cancer. Radiol Bras. 2017 Sep-Oct; 50(5):299-307.
Jha P, Bentley B, Behr S, Yee J, Zagoria R. Imaging of flank pain: readdressing state-of-the-art. Emerg Radiol. 2017 Feb; 24(1):81-86.
Winklhofer S, Lambert JW, Wang ZJ, Sun Y, Gould RG, Zagoria RJ, Yeh BM. Reduction of peristalsis-related gastrointestinal streak artifacts with dual-energy CT: a patient and phantom study. Abdom Radiol (NY). 2016 Aug; 41(8):1456-65.
Westphalen AC, Verma S, Zagoria RJ. Is it time for prostate MRI certification? Abdom Radiol (NY). 2016 05; 41(5):799-800.
Starobinets O, Korn N, Iqbal S, Noworolski SM, Zagoria R, Kurhanewicz J, Westphalen AC. Practical aspects of prostate MRI: hardware and software considerations, protocols, and patient preparation. Abdom Radiol (NY). 2016 05; 41(5):817-30.
Kohli M, Mayo-Smith W, Zagoria R, Sandrasegaran K. Image-guided intervention in the coagulopathic patient. Abdom Radiol (NY). 2016 04; 41(4):667-76.
Westphalen AC, Noworolski SM, Harisinghani M, Jhaveri KS, Raman SS, Rosenkrantz AB, Wang ZJ, Zagoria RJ, Kurhanewicz J. High-Resolution 3-T Endorectal Prostate MRI: A Multireader Study of Radiologist Preference and Perceived Interpretive Quality of 2D and 3D T2-Weighted Fast Spin-Echo MR Images. AJR Am J Roentgenol. 2016 Jan; 206(1):86-91.
Zagoria R. Emergency Radiology goes international. Emerg Radiol. 2015 Oct 20.
Zagoria R. Emergency Radiology: what is different in children? Emerg Radiol. 2015 Sep; 22 Suppl 1:1.
Childs DD, Clingan MJ, Zagoria RJ, Sirintrapun J, Tangtiang K, Anderson A, Leyendecker JR. In-phase signal intensity loss in solid renal masses on dual-echo gradient-echo MRI: association with malignancy and pathologic classification. AJR Am J Roentgenol. 2014 Oct; 203(4):W421-8.
Allen BC, Chen MY, Childs DD, Zagoria RJ. Imaging-guided radiofrequency ablation of cystic renal neoplasms. AJR Am J Roentgenol. 2013 Jun; 200(6):1365-9.
Davis IC, Heilbrun ME, Tangtiang K, Childs DD, Zagoria RJ. Computed tomography-guided renal tumor biopsies: tumor imaging features affecting sample adequacy. J Comput Assist Tomogr. 2013 Mar-Apr; 37(2):171-5.
Gupta P, Allen BC, Chen MY, Childs DD, Kota G, Zagoria RJ. Renal function outcomes for multifocal renal neoplasms managed by radiofrequency ablation. Cardiovasc Intervent Radiol. 2013 Oct; 36(5):1329-35.
Zagoria RJ, Childs DD. Update on thermal ablation of renal cell carcinoma: oncologic control, technique comparison, renal function preservation, and new modalities. Curr Urol Rep. 2012 Feb; 13(1):63-9.
Heilbrun ME, Yu J, Smith KJ, Dechet CB, Zagoria RJ, Roberts MS. The cost-effectiveness of immediate treatment, percutaneous biopsy and active surveillance for the diagnosis of the small solid renal mass: evidence from a Markov model. J Urol. 2012 Jan; 187(1):39-43.
Parks GE, Perkins LA, Zagoria RJ, Garvin AJ, Sirintrapun SJ, Geisinger KR. Benefits of a combined approach to sampling of renal neoplasms as demonstrated in a series of 351 cases. Am J Surg Pathol. 2011 Jun; 35(6):827-35.
Zagoria RJ, Pettus JA, Rogers M, Werle DM, Childs D, Leyendecker JR. Long-term outcomes after percutaneous radiofrequency ablation for renal cell carcinoma. Urology. 2011 Jun; 77(6):1393-7.
Georgiades CS, Rodriguez R, Littrup PJ, Frangakis CE, Leveille R, Ahrar K, Atwell TD, Cadeddu J, Trimmer C, Durack JC, Hammers HJ, Meng MV, Raman S, Solomon SB, Zagoria RJ, McLennan G, Laberge JM, Gervais DA, Kee ST. Development of a research agenda for percutaneous renal tumor ablation: proceedings from a multidisciplinary research consensus panel. J Vasc Interv Radiol. 2010 Dec; 21(12):1807-16.
Pettus JA, Werle DM, Saunders W, Hemal A, Kader AK, Childs D, Zagoria RJ. Percutaneous radiofrequency ablation does not affect glomerular filtration rate. J Endourol. 2010 Oct; 24(10):1687-91.
Uppot RN, Silverman SG, Zagoria RJ, Tuncali K, Childs DD, Gervais DA. Imaging-guided percutaneous ablation of renal cell carcinoma: a primer of how we do it. AJR Am J Roentgenol. 2009 Jun; 192(6):1558-70.
Patel NP, Geisinger KR, Zagoria RJ, Bergman S. Fine needle aspiration biopsy of metanephric adenoma: a case report. Acta Cytol. 2009 May-Jun; 53(3):327-31.
Zagoria RJ, Dixon RL. Radiology of urolithiasis: implications of radiation exposure and new imaging modalities. Adv Chronic Kidney Dis. 2009 Jan; 16(1):48-51.
Krehbiel K, Ahmad A, Leyendecker J, Zagoria R. Thermal ablation: update and technique at a high-volume institution. Abdom Imaging. 2008 Nov-Dec; 33(6):695-706.
Leyendecker JR, Barnes CE, Zagoria RJ. MR urography: techniques and clinical applications. Radiographics. 2008 Jan-Feb; 28(1):23-46; discussion 46-7.
Zagoria RJ, Traver MA, Werle DM, Perini M, Hayasaka S, Clark PE. Oncologic efficacy of CT-guided percutaneous radiofrequency ablation of renal cell carcinomas. AJR Am J Roentgenol. 2007 Aug; 189(2):429-36.
Heilbrun ME, Zagoria RJ, Garvin AJ, Hall MC, Krehbiel K, Southwick A, Clark PE. CT-guided biopsy for the diagnosis of renal tumors before treatment with percutaneous ablation. AJR Am J Roentgenol. 2007 Jun; 188(6):1500-5.
Syvanthong C, Wile GE, Zagoria RJ. Effect of radiofrequency ablation of renal tumors on renal function in patients with a solitary kidney. AJR Am J Roentgenol. 2007 Jun; 188(6):1619-21.
Clark PE, Woodruff RD, Zagoria RJ, Hall MC. Microwave ablation of renal parenchymal tumors before nephrectomy: phase I study. AJR Am J Roentgenol. 2007 May; 188(5):1212-4.
Shen P, Geisinger KR, Zagoria R, Levine EA. Pathologic correlation study of microwave coagulation therapy for hepatic malignancies using a three-ring probe. J Gastrointest Surg. 2007 May; 11(5):603-11.
Wile GE, Leyendecker JR, Krehbiel KA, Dyer RB, Zagoria RJ. CT and MR imaging after imaging-guided thermal ablation of renal neoplasms. Radiographics. 2007 Mar-Apr; 27(2):325-39; discussion 339-40.
Zagoria RJ, Gasser T, Leyendecker JR, Bechtold RE, Dyer RB. Differentiation of renal neoplasms from high-density cysts: use of attenuation changes between the corticomedullary and nephrographic phases of computed tomography. J Comput Assist Tomogr. 2007 Jan-Feb; 31(1):37-41.
Zagoria RJ. "Percutaneous RF interstitial thermal ablation in the treatment of hepatic cancer"-- a commentary. AJR Am J Roentgenol. 2006 Nov; 187(5):1149-50.
Matin SF, Ahrar K, Cadeddu JA, Gervais DA, McGovern FJ, Zagoria RJ, Zagoria RA, Uzzo RG, Haaga J, Resnick MI, Kaouk J, Gill IS. Residual and recurrent disease following renal energy ablative therapy: a multi-institutional study. J Urol. 2006 Nov; 176(5):1973-7.
Zagoria RJ. Retrospective view of "diagnosis of acute flank pain: value of unenhanced helical CT". AJR Am J Roentgenol. 2006 Sep; 187(3):603-4.
Clark HP, Carson WF, Kavanagh PV, Ho CP, Shen P, Zagoria RJ. Staging and current treatment of hepatocellular carcinoma. Radiographics. 2005 Oct; 25 Suppl 1:S3-23.
Barker DW, Zagoria RJ, Morton KA, Kavanagh PV, Shen P. Evaluation of liver metastases after radiofrequency ablation: utility of 18F-FDG PET and PET/CT. AJR Am J Roentgenol. 2005 Apr; 184(4):1096-102.
Cofield KR, Cantley LK, Geisinger KR, Zagoria RJ, Perrier ND. Adrenocortical carcinoma arising from a long-standing adrenal mass. Mayo Clin Proc. 2005 Feb; 80(2):264-6.
Dyer RB, Chen MY, Zagoria RJ. Classic signs in uroradiology. Radiographics. 2004 Oct; 24 Suppl 1:S247-80.
Zagoria RJ. Imaging-guided radiofrequency ablation of renal masses. Radiographics. 2004 Oct; 24 Suppl 1:S59-71.
Zagoria RJ, Hawkins AD, Clark PE, Hall MC, Matlaga BR, Dyer RB, Chen MY. Percutaneous CT-guided radiofrequency ablation of renal neoplasms: factors influencing success. AJR Am J Roentgenol. 2004 Jul; 183(1):201-7.
Matlaga BR, Zagoria RJ, Clark PE, Hall MC. Radiofrequency ablation of renal tumors. Curr Urol Rep. 2004 Feb; 5(1):39-44.
Zagoria RJ. Lee Rogers, AJR Editor in Chief, 1995-2003: a golden age for the yellow journal. AJR Am J Roentgenol. 2004 Jan; 182(1):1-2.
Zagoria RJ, Roth TJ, Levine EA, Kavanagh PV. Radiofrequency ablation of a symptomatic hepatic cavernous hemangioma. AJR Am J Roentgenol. 2004 Jan; 182(1):210-2.
Henn AR, Levine EA, McNulty W, Zagoria RJ. Percutaneous radiofrequency ablation of hepatic metastases for symptomatic relief of neuroendocrine syndromes. AJR Am J Roentgenol. 2003 Oct; 181(4):1005-10.
Zagoria RJ. Percutaneous image-guided radiofrequency ablation of renal malignancies. Radiol Clin North Am. 2003 Sep; 41(5):1067-75.
Matlaga BR, Shah OD, Zagoria RJ, Dyer RB, Streem SB, Assimos DG. Computerized tomography guided access for percutaneous nephrostolithotomy. J Urol. 2003 Jul; 170(1):45-7.
McLaughlin CA, Chen MY, Torti FM, Hall MC, Zagoria RJ. Radiofrequency ablation of isolated local recurrence of renal cell carcinoma after radical nephrectomy. AJR Am J Roentgenol. 2003 Jul; 181(1):93-4.
Zagoria R. The ACGME and the residency review committee: external program review. Accreditation Council for Graduate Medical Education. Acad Radiol. 2003 Feb; 10 Suppl 1:S10-5.
Matlaga BR, Zagoria RJ, Woodruff RD, Torti FM, Hall MC. Phase II trial of radio frequency ablation of renal cancer: evaluation of the kill zone. J Urol. 2002 Dec; 168(6):2401-5.
Dyer RB, Chen MY, Zagoria RJ, Regan JD, Hood CG, Kavanagh PV. Complications of ureteral stent placement. Radiographics. 2002 Sep-Oct; 22(5):1005-22.
Moreland WS, Zagoria RJ, Geisinger KR. Use of fine needle aspiration biopsy in radiofrequency ablation. Acta Cytol. 2002 Sep-Oct; 46(5):819-22.
Dyer RB, Regan JD, Kavanagh PV, Khatod EG, Chen MY, Zagoria RJ. Percutaneous nephrostomy with extensions of the technique: step by step. Radiographics. 2002 May-Jun; 22(3):503-25.
Zagoria RJ, Chen MY, Shen P, Levine EA. Complications from radiofrequency ablation of liver metastases. Am Surg. 2002 Feb; 68(2):204-9.