Research Summary

Spencer Behr, MD, is an Assistant Professor of Clinical Radiology and the Director of the Fellowship for both the Abdominal Imaging subspecialty and for the Department of Radiology and Biomedical Imaging at the University of California, San Francisco. He obtained his medical degree from Tufts University School of Medicine, Boston in 2005. In 2010, he completed a four-year Diagnostic Radiology residency at the Lahey Clinic Medical Center in Burlington, Massachusetts, followed by a fellowship in Abdominal Imaging and Nuclear Medicine at UCSF.

Dr. Behr has subspecialty training in abdominal imaging and nuclear medicine, and his research interests are focused on molecular and hybrid imaging translational research. He has selectively pursued interdepartmental projects to foster cross-disciplinary discussions and optimize the clinical impact of these projects.

Projects include: FDG PET in breast cancer, comparing breast cancer molecular subtypes with their respective FDG PET and breast MRI findings, CT findings in Celiac Disease, fluoro-18-fluorothymidine (FLT) PET as a potential marker of early response in patients with metastatic melanoma, CT appearance of malabsorption, and clinical applications of iodine-124 PET/CT in thyroid cancer.


Massachusetts Institute of Technology, BS, 06/1999, Biology and Chemistry
Tufts University School of Medicine, Boston, MA, MD, 06/2005, Medicine
Saint Vincent Hospital, Worchester, MA, Intern, 06/2006, Medicine
Lahey Clinic Medical Center, Burlington, MA, Resident & Chief Resident, 06/2010, Diagnostic Radiology
University of California, San Francisco, San Francisco, CA, Fellow, 06/2011, Abdominal Imaging
University of California, San Francisco, San Francisco, CA, Fellow, 06/2012, Nuclear Medicine

Honors & Awards

  • 2015
    Nominated for "Radiology Award for Outstanding Faculty Mentoring", UCSF
  • 2017
    Hideyo Minagi "Outstanding Teacher Award", UCSF
  • 2017
    Radiological Society of North America (RSNA) Honored Educator Award Recipient, Radiological Society of North America (RSNA)
  • 2017
    2017 Excellence in Teaching Award, Academy of Medical Educators at UCSF

Selected Publications

  1. Susko MS, Lazar AA, Wang CJ, Van Loon K, Feng M, Hope TA, Behr S, Anwar M Use of advanced PET-volume metrics predicts risk of local recurrence and overall survival in anal cancer.  View on PubMed
  2. Sohn JH, Behr SC, Hernandez Pampaloni M, Seo Y Quantitative Assessment of Myocardial Ischemia With Positron Emission Tomography.  View on PubMed
  3. Temple WC, Vo KT, Matthay KK, Balliu B, Coleman C, Michlitsch J, Phelps A, Behr S, Zapala MA Association of image-defined risk factors with clinical features, histopathology, and outcomes in neuroblastoma.  View on PubMed
  4. Merritt BA, Behr SC Education of prostate MR imaging: commentary.  View on PubMed
  5. Rowe SP, Johnson GB, Pomper MG, Gorin MA, Behr SC Recent updates and developments in PET imaging of prostate cancer.  View on PubMed
  6. Lee AY, Lam A, Hicks RB, Isikbay M, Heller MB, Sugi MD, Behr S, Kohi MP Visceral Aneurysm Formation and Intraabdominal Hemorrhage Associated with Immune Checkpoint Inhibitor Therapy.  View on PubMed
  7. Raghavan K, Flavell RR, Westphalen AC, Behr SC Gastrointestinal Stromal Tumor Incidentally Detected on 18F-Fluciclovine PET/CT.  View on PubMed
  8. Atreya CE, Collisson EA, Park M, Grenert JP, Behr SC, Gonzalez A, Chou J, Maisel S, Friedlander TW, Freise CE, Shoji J, Semrad TJ, Van Ziffle J, Chin-Hong P Molecular Insights in Transmission of Cancer From an Organ Donor to Four Transplant Recipients.  View on PubMed
  9. Lawhn-Heath C, Yom SS, Liu C, Villanueva-Meyer JE, Aslam M, Smith R, Narwal M, Juarez R, Behr SC, Pampaloni MH, Chan JW, Glastonbury CM, Hope TA, Flavell RR Gallium-68 prostate-specific membrane antigen ([68Ga]Ga-PSMA-11) PET for imaging of thyroid cancer: a feasibility study.  View on PubMed
  10. Li Y, Behr S Acute Findings on FDG PET/CT: Key Imaging Features and How to Differentiate Them from Malignancy.  View on PubMed
  11. Huang Y, Zhao N, Wang YH, Truillet C, Wei J, Parker MFL, Blecha JE, Drake CR, VanBrocklin HF, Ruiz DG, Jacobson MP, Aggarwal R, Behr SC, Flavell RR, Wilson DM, Seo Y, Evans MJ The synthesis and structural requirements for measuring glucocorticoid receptor expression in vivo with (±)-11C-YJH08 PET.  View on PubMed
  12. Kramer SP, Bowman CJ, Wang ZJ, Sheahon KM, Nakakura EK, Cho SJ, Umetsu SE, Behr SC Hybrid Low-Grade Fibromyxoid Sarcoma and Sclerosing Epithelioid Fibrosarcoma of the Pancreas.  View on PubMed
  13. Fendler WP, Ferdinandus J, Czernin J, Eiber M, Flavell RR, Behr SC, Wu IK, Lawhn-Heath C, Pampaloni MH, Reiter RE, Rettig MB, Gartmann J, Murthy V, Slavik R, Carroll PR, Herrmann K, Calais J, Hope TA Impact of 68Ga-PSMA-11 PET on the Management of Recurrent Prostate Cancer in a Prospective Single-Arm Clinical Trial.  View on PubMed
  14. Chiu LW, Lawhn-Heath C, Behr SC, Juarez R, Perez PM, Lobach I, Bucknor MD, Hope TA, Flavell RR Factors Predicting Metastatic Disease in 68Ga-PSMA-11 PET-Positive Osseous Lesions in Prostate Cancer.  View on PubMed
  15. Huang Y, Zhao N, Wang YH, Truillet C, Wei J, Blecha JE, VanBrocklin HF, Seo Y, Sayeed M, Feldman BJ, Aggarwal R, Behr SC, Shao H, Wilson DM, Villanueva-Meyer JE, Gestwicki JE, Evans MJ A Novel Radioligand Reveals Tissue Specific Pharmacological Modulation of Glucocorticoid Receptor Expression with Positron Emission Tomography.  View on PubMed
  16. Seo Y, Khalighi MM, Wangerin KA, Deller TW, Wang YH, Jivan S, Kohi MP, Aggarwal R, Flavell RR, Behr SC, Evans MJ Quantitative and Qualitative Improvement of Low-Count [68Ga]Citrate and [90Y]Microspheres PET Image Reconstructions Using Block Sequential Regularized Expectation Maximization Algorithm.  View on PubMed
  17. Werner RA, Derlin T, Lapa C, Sheikbahaei S, Higuchi T, Giesel FL, Behr S, Drzezga A, Kimura H, Buck AK, Bengel FM, Pomper MG, Gorin MA, Rowe SP 18F-Labeled, PSMA-Targeted Radiotracers: Leveraging the Advantages of Radiofluorination for Prostate Cancer Molecular Imaging.  View on PubMed
  18. Merritt BA, Behr SC, Khati NJ Imaging of Infertility, Part 2: Hysterosalpingograms to Magnetic Resonance Imaging.  View on PubMed
  19. Merritt BA, Behr SC, Khati NJ Imaging of Infertility, Part 1: Hysterosalpingograms to Magnetic Resonance Imaging.  View on PubMed
  20. Merritt B, Behr S, Umetsu SE, Roberts J, Kolli KP Anastomosing hemangioma of liver.  View on PubMed

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