Radiologist: Piotr Obara, MD | Loyola Medicine

COVID-19 (Coronavirus) Update

Loyola Medicine is resuming select health care services. Learn more about resumption of services.

Piotr Obara, MD

Piotr Obara, MD


Assistant Professor

Languages Spoken

English, Polish

Clinical Expertise

  • Gastrointestinal Imaging
  • Genitourinary Tract Imaging
  • Magnetic Resonance Imaging (MRI)

About Dr. Obara

Camping, Hiking, Biking

Medical Education

Medical School
University of Chicago Pritzker School of Medicine
University of Chicago Medical Center - Radiology
  • Stanford Hospital - Body MRI

Board Certification

American Board of Radiology Diagnostic Radiology


  • ACR Appropriateness Criteria Imaging of Mesenteric Ischemia. Ginsburg, M; Obara, P; Lambert, DL; Hanley, M; Steigner, ML; Camacho, MA; Chandra, A; Chang, KJ; Gage, KL; Peterson, CM; Ptak, T; Verma, N; Kim, DH; Carucci, LR; Dill, KE, Journal of the American College of Radiology : JACR
  • ACR Appropriateness Criteria Lower Extremity Arterial Revascularization-Post-Therapy Imaging. Cooper, K; Majdalany, BS; Kalva, SP; Chandra, A; Collins, JD; Francois, CJ; Ganguli, S; Gornik, HL; Kendi, AT; Khaja, MS; Minocha, J; Norton, PT; Obara, P; Reis, SP; Sutphin, PD; Rybicki, FJ, Journal of the American College of Radiology : JACR
  • The impact of computed high b-value images on the diagnostic accuracy of DWI for prostate cancer: A receiver operating characteristics analysis. Ning, P; Shi, D; Sonn, GA; Vasanawala, SS; Loening, AM; Ghanouni, P; Obara, P; Shin, LK; Fan, RE; Hargreaves, BA; Daniel, BL, Scientific reports
View All ResearchShow Less
  • Adenoma localization for recurrent or persistent primary hyperparathyroidism using dynamic four-dimensional CT and venous sampling Ginsburg, M.; Christoforidis, G. A.; Zivin, S. P.; Obara, P.; Wroblewski, K.; Angelos, P.; Grogan, R. H.; Kaplan, E. L., Journal of vascular and interventional radiology : JVIR
  • Evaluating the Referring Physician's Clinical History and Indication as a Means for Communicating Chronic Conditions That Are Pertinent at the Point of Radiologic Interpretation Obara, P.; Sevenster, M.; Travis, A.; Qian, Y.; Westin, C.; Chang, P. J., JOURNAL OF DIGITAL IMAGING
  • Prospective Comparison of 99mTc-MDP Scintigraphy Combined 18F-NaF and 18F-FDG PET/CT, and Whole-Body MRI in Patients with Breast and Prostate Cancer, Minamimoto, R.; Loening, A.; Jamali, M.; Barkhodari, A.; Mosci, C.; Jackson, T.; Obara, P.; Taviani, V.; Gambhir, S. S.; Vasanawala, S.; Iagaru, A., Journal of nuclear medicine : official publication, Society of Nuclear Medicine
  • Quantification of metabolic tumor activity and burden in patients with non-small-cell lung cancer: Is manual adjustment of semiautomatic gradient-based measurements necessary? Obara, P.; Liu, H.; Wroblewski, K.; Zhang, C. P.; Hou, P.; Jiang, Y.; Chen, P.; Pu, Y., NUCLEAR MEDICINE COMMUNICATIONS
  • Quantitative radiology: automated measurement of polyp volume in computed tomography colonography using Hessian matrix-based shape extraction and volume growing Epstein, M. L.; Obara, P. R.; Chen, Y.; Liu, J.; Zarshenas, A.; Makkinejad, N.; Dachman, A. H.; Suzuki, K., Quantitative imaging in medicine and surgery
  • BMI-based radiation dose reduction in CT colonography Ginsburg, M.; Obara, P.; Wise, L.; Wroblewski, K.; Vannier, M. W.; Dachman, A. H., ACADEMIC RADIOLOGY
  • Evolving role of MRI in Crohn's disease Yacoub, J. H.; Obara, P.; Oto, A., Journal of magnetic resonance imaging : JMRI
  • Prognostic value of metabolic tumor burden in lung cancer Obara, P.; Pu, Y., Chinese journal of cancer research = Chung-kuo yen cheng yen chiu
  • Evaluation of CT as a predictor for kidney and renal artery mobility Guzzetta, P.; Obara, P.; Dachman, A., Diagnostic and interventional radiology (Ankara, Turkey)
  • Recutting prostate needle core biopsies with high grade prostatic intraepithelial neoplasia increases detection of adenocarcinoma Rapp, D. E.; Msezane, L. P.; Reynolds, W. S.; Lotan, T. L.; Obara, P.; O'Connor, R. C.; Taxy, J. B.; Gerber, G. S.; Zagaja, G. P., The Canadian journal of urology
  • Epidermal growth factor receptor signaling is up-regulated in human colonic aberrant crypt foci. Cohen, G.; Mustafi, R.; Chumsangsri, A.; Little, N.; Nathanson, J.; Cerda, S.; Jagadeeswaran, S.; Dougherty, U.; Joseph, L.; Hart, J.; Yerian, L.; Tretiakova, M.; Yuan, W.; Obara, P.; Khare, S.; Sinicrope, F. A.; Fichera, A.; Boss, G. R.; Carroll, R.; Bissonnette, M., Cancer research
  • Relative value of three whole-body MR approaches for PET-MR including gadofosveset-enhanced MR, in comparison to PET-CT., Obara, P; Loening, A; Taviani, V; Iagaru, A; Hargreaves, BA; Vasanawala, S, CLINICAL IMAGING