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Ronald Zagoria, M.D.


Dr. Ronald Zagoria is a radiologist and the chief of Abdominal Imaging at UCSF Medical Center. His clinical interests include uro-oncology, urolithiasis and infertility. He specializes in image-guided tumor ablation for kidney cancer. Zagoria has been recognized as one of the Best Doctors in America, America's Top Radiologist, America's Top Doctors for Cancer and Top Doctor for the International Association of Radiologists by Castle Connolly Medical Ltd. and U.S. News and World Report. He has given over 300 lectures and presentations and has written over 300 publications, including textbooks, book chapters, journal articles and abstracts.

Prior to joining UCSF, Zagoria served as the chief of Genitourinary Imaging and Intervention and executive vice chair for the Department of Radiology at Wake Forest University School of Medicine. Currently, he is a professor of radiology at UCSF.


Radiology at Parnassus
505 Parnassus Ave., Third Floor, Room M-327
San Francisco, CA 94143
Scheduling: (415) 353-2573
Main Phone: (415) 353-1968
Interventional Radiology: (415) 353-1300
Fax: (415) 353-7140

Hours: Monday to Friday 7:30 a.m. – 5:30 p.m.

More about Ronald Zagoria


University of Maryland School of Medicine 1983


Wake Forest University 1986


University of Massachusetts Medical Center 1987

Selected Research and Publications

  1. Zagoria R. Emergency Radiology: what is different in children? Emerg Radiol. 2015 Sep; 22 Suppl 1:1.
  2. 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.
  3. 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.
  4. 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.
  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.
  6. 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.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. Leyendecker JR, Barnes CE, Zagoria RJ. MR urography: techniques and clinical applications. Radiographics. 2008 Jan-Feb; 28(1):23-46; discussion 46-7.
  17. 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.
  18. 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.
  19. 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.
  20. 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.

Publications are derived from MEDLINE/PubMed and provided by UCSF Profiles, a service of the Clinical & Translational Science Institute (CTSI) at UCSF. Researchers can make corrections and additions to their publications by logging on to UCSF Profiles.