Ryan D. Niederkohr, MD

Assistant Professor, Boston University Chobanian & Avedisian School of Medicine

Biography

About Me
I completed my medical education at The Ohio State University (2003), followed by residency training in nuclear medicine at Stanford University Medical Center (2007). I joined The Permanente Medical Group in 2008. My clinical interests include diagnostic and therapeutic nuclear medicine.
Roles and Responsibilities
In addition to my clinical duties, I serve as an assistant physician-in-chief at the KP Santa Clara Medical Center.
Professional Affiliations
I am proud to have held leadership positions in the Society of Nuclear Medicine and Molecular Imaging and The American Board of Nuclear Medicine.
Hobbies and interests
My hobbies include golf, skiing and aviation.

Publications

  • Published 9/30/2025

    Vinson DR, Somers MJ, Middleton CE, Zekar L, Qiao E, Woldemariam ST, Gupta N, Poth LS, Urbania TH, Niederkohr RD, Reed ME, Sperling JD, Roubinian NH. Advanced Imaging in Suspected Antenatal Pulmonary Embolism in Community Practice: Preferences, Indeterminacy, and Clinician Response. Acad Emerg Med. 2025 Dec; 32(12):1288-1298. PMID: 41030131.

    Read at: PubMed

  • Published 10/15/2021

    Niederkohr RD, Hayden SP, Hamill JJ, Jones JP, Schaefferkoetter JD, Chiu E. Reproducibility of FDG PET/CT image-based cancer staging and standardized uptake values with simulated reduction of injected FDG dose or acquisition time. Am J Nucl Med Mol Imaging. 2021; 11(5):428-442. PMID: 34754613.

    Read at: PubMed

  • Published 3/15/2019

    Zukotynski KA, Niederkohr RD, Greenspan BS, Prior JO, Schöder H, Seltzer MA, Rohren EM, Yoo DC. An International Survey of PET/CT Clinical Reporting. J Nucl Med. 2019 Apr; 60(4):478-479. PMID: 30877176.

    Read at: PubMed

  • Published 12/1/2018

    Sanli Y, Zukotynski K, Mittra E, Chen DL, Nadel H, Niederkohr RD, Subramaniam RM. Update 2018: 18F-FDG PET/CT and PET/MRI in Head and Neck Cancer. Clin Nucl Med. 2018 Dec; 43(12):e439-e452. PMID: 30394934.

    Read at: PubMed

  • Published 6/1/2017

    Wright CL, Niederkohr RD, Knopp MU, Knopp MV. Online Social Media Practices in Nuclear Medicine and Molecular Imaging: A Concept to Incentivize Creation of Digital and Web-Based Content. J Nucl Med. 2017 06; 58(6):12N-14N. PMID: 28572291.

    Read at: PubMed

View All 31 Publications:   View Full Profile in BUMC

Websites

Education

  • Ohio State University, MD
  • University of Notre Dame, BS

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