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Drew A Torigian, M.D., MA

Professor of Radiology at the Hospital of the University of Pennsylvania

  • Attending Staff, Department of Radiology, Hospital of the University of Pennsylvania
  • Active Staff, Department of Radiology, Presbyterian Medical Center
  • Active Staff, Department of Radiology, Pennsylvania Hospital
  • Clinical Director, Medical Image Processing Group (MIPG), Department of Radiology, University of Pennsylvania Medical Center
  • Active Medical Staff , The Chester County Hospital

Department: Radiology


Contact Information

Department of Radiology
Hospital of the University of Pennsylvania
3400 Spruce Street
Philadelphia, PA 19104
Office: 215-615-3805
Fax: 215-614-0033
Email: drew.torigian@pennmedicine.upenn.edu


I3H Keywords

  • Allergy, Asthma, and Other Inflammatory Diseases
  • Autoimmunity
  • Cancer Immunology and Immunotherapy

Links


Education

  • BA (Mathematics)
    Johns Hopkins University, 1991
  • BA (Chemistry)
    Johns Hopkins University, 1991
  • MA (Mathematics)
    Johns Hopkins University, 1991
  • MD (Medicine)
    New York University School of Medicine, 1996

Post-Graduate Training

  • Internship in Internal Medicine
    New York University Medical Center, 1996 - 1997
  • Residency in Diagnostic Radiology
    Hospital of the University of Pennsylvania, 1997 - 2001
  • Fellowship, Body and Musculoskeletal MRI
    Hospital of the University of Pennsylvania, 2001 - 2003
  • Business Essentials Certificate Program, Wharton Programs for Working Professionals (WPWP)
    The Wharton School, University of Pennsylvania , 2004 - 2007

Certifications

  • Basic Cardiac Life Support Certification. 1995-2009., 1995
  • Advanced Cardiac Life Support Certification. 1996-1998., 1996
  • American Board of Radiology Certification (lifetime), 2001

Description of Clinical Expertise

thoracic imaging (plain film radiography, CT, MRI, PET, and PET/CT)
body CT imaging
body MR imaging
PET and PET/CT imaging
oncologic imaging
vascular imaging (CT and MR)

Description of Research Expertise

oncologic imaging (lung cancer, melanoma, lymphoma, GI, GU, and gyn cancers)
inflammation imaging
aging imaging
translational research imaging
thoracoabdominopelvic imaging
CT imaging
MR imaging
PET, PET/CT, and PET/MR imaging
functional and molecular imaging
quantitative imaging/image analysis
all types of imaging response assessment on CT, MRI, and PET

Description of ITMAT Expertise

I have interest in clinical and translational research related to quantitative imaging through PET and CT/MRI, and enjoy collaborating with other investigators in a variety of disciplines.

Selected Publications

  • Mortazi A, Udupa JK, Hosseini M, Tong Y, Torigian DA. : Virtual cutaneous area severity index (vCASI): A comprehensive methodology for quantitative skin disease assessment on positron emission tomography images. Eur J Nucl Med Mol Imaging Jun 2025 In press
  • Hassani S, Tong Y, Lomer NB, Udupa JK, Wu C, McDonough JM, Gogel S, Mayer OH, Biko DM, Cahill PJ, Anari JB, Torigian DA. : Comparative analysis of thoracic structure and function using CT and dynamic MRI in pediatric insufficiency syndrome with and without neuromuscular disease. Spine Deform May 2025 In press Notes: doi: 10.1007/s43390-025-01095-y
  • Lomer NB, Abdi S, Ashoobi MA, Ahmadzadeh AM, Ghasemi A, Torigian DA. : Accuracy of CT-based radiomics models for preoperative grading of clear cell renal cell carcinoma: a systematic review and meta-analysis. Acad Radiol 2025 In press
  • Lomer NB, Ghasemi A, Torigian DA. : MRI-based radiomics models for distinguishing high-grade and low-grade clear cell renal cell carcinoma: A systematic review and meta-analysis. Abdom Radiol 2025 In press
  • Tong Y, Udupa JK, McDonough JM, Xie L, Wu C, Akhtar Y, Hosseini M, Alnoury M, Shaghaghi S, Gogel S, Biko DM, Mayer OH, Torigian DA, Cahill PJ, Anari JB. : Do rib-based anchors impair chest wall motion in early onset scoliosis (EOS)? – A novel investigation via dynamic MRI. J Pediatr Orthop Jun 2025 In Press
  • Mehrabi Nejad MM, Ghanbari Boroujeni MR, Hayati A, Dashti F, Udupa JK, Torigian DA. : Performance of AI methods in PET-based imaging for outcome prediction in lymphoma: A systematic review and meta-analysis. Eur J Radiol 190(112204) : 1-19, Sept 2025 Notes: doi: 10.1016/j.ejrad.2025.112204
  • Liu T, Li J, Torigian DA, Tong Y, Xiong Q, Zhang K, Udupa JK. : Diffusion semantic segmentation model: a generative model for medical image segmentation based on joint distribution. Med Phys 52(7) : 1-17, Jul 2025 Notes: doi: 10.1002/mp.17928
  • Hosseini M, Udupa JK, Hao Y, Tong Y, Wu C, Akhtar Y, Shaghaghi S, Al-Noury M, Dindarian S, McDonough JM, Biko DM, Gogel S, Mayer OH, Cahill PJ, Torigian DA, Anari JB. : Assessment of regional 3D hemi-diaphragmatic motion via free-breathing dynamic MRI in pediatric thoracic insufficiency syndrome. Acad Radiol 32(7) : 4188-4196, Jul 2025 Notes: doi: 10.1016/j.acra.2025.05.012
  • Lomer NB, Ashoobi MA, Ahmadzadeh AM, Sotoudeh H, Tabari A, Torigian DA. : MRI-based radiomics for predicting prostate cancer grade groups: a systematic review and meta-analysis of diagnostic test accuracy studies. Acad Radiol 32(6) : 3429-3452, Jun 2025 Notes: doi: 10.1016/j.acra.2024.12.006
  • Ahmadzadeh AM, Lomer NB, Torigian DA. : Radiomics and machine learning models for diagnosing microvascular invasion in cholangiocarcinoma: a systematic review and meta-analysis of diagnostic test accuracy studies. Clin Imaging 121(110456) May 2025 Notes: doi: 10.1016/j.clinimag.2025.110456