Osamu Sakai, MD, PhD

Professor, Radiology

Osamu Sakai
820 Harrison Ave


Dr. Sakai was born and raised in Japan. He graduated from Yamagata University School of Medicine, Japan in 1988, and completed radiology residency at Jichi Medical School Hospital, Japan in 1993, and served as a faculty at Jichi Medical School in 1993-2001. He received his PhD from Jichi Medical School in 1998. Dr. Sakai first came to Boston as a research fellow at Massachusetts Eye and Ear Infirmary, Harvard Medical School in 1998-1999. After the fellowship he went back home but two years later he joined Boston Medical Center as a neuroradiology fellow in 2001. After his completion of neuroradiology fellowship, he stayed at BU/BMC as a faculty in Radiology.

Dr. Sakai is a board-certified radiologist in both Japan and the U.S. with neuroradiology subspecialty board certification. He was trained and has been practicing, teaching and conducting research in different languages and cultures, which helps him understand students, residents/fellows, colleagues as well as patients from different backgrounds. Dr. Sakai’s academic interest is neuroradiology and head and neck radiology. He has published multiple books and chapters in the U.S. and Japan in both English and Japanese. His research interests are diverse and include head and neck cancer, sickle cell disease, amyloidosis, aging, and trauma.

Other Positions

  • Section Chief of Neuroradiology, Neuroradiology, Radiology, Boston University School of Medicine
  • Professor, Otolaryngology-Head & Neck Surgery, Boston University School of Medicine
  • Professor, Radiation Oncology, Boston University School of Medicine
  • Active Staff Privileges, Radiology, Boston Medical Center


  • Yamagata University, MD
  • Jichi Medical University, PhD


  • Published on 9/1/2019

    Abdalkader M, Takumi K, Chapman MN, Barest GD, Peeler C, Sakai O. Subretinal and Retrolaminar Migration of Intraocular Silicone Oil Detected on CT. AJNR Am J Neuroradiol. 2019 Sep; 40(9):1557-1561. PMID: 31467241.

    Read at: PubMed
  • Published on 6/10/2019

    Fujima N, Shimizu Y, Yoshida D, Kano S, Mizumachi T, Homma A, Yasuda K, Onimaru R, Sakai O, Kudo K, Shirato H. Machine-Learning-Based Prediction of Treatment Outcomes Using MR Imaging-Derived Quantitative Tumor Information in Patients with Sinonasal Squamous Cell Carcinomas: A Preliminary Study. Cancers (Basel). 2019 Jun 10; 11(6). PMID: 31185611.

    Read at: PubMed
  • Published on 5/23/2019

    Fujii H, Fujita A, Kanazawa H, Sung E, Sakai O, Sugimoto H. Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol. 2019 Jun; 40(6):1037-1042. PMID: 31122915.

    Read at: PubMed
  • Published on 5/8/2019

    Kawashima Y, Fujita A, Buch K, Li B, Qureshi MM, Chapman MN, Sakai O. Using texture analysis of head CT images to differentiate osteoporosis from normal bone density. Eur J Radiol. 2019 Jul; 116:212-218. PMID: 31153568.

    Read at: PubMed
  • Published on 5/7/2019

    Sawada E, Kaneda T, Sakai O, Kawashima Y, Ito K, Hirahara N, Iizuka N. Increased Apparent Diffusion Coefficient Values of Masticatory Muscles on Diffusion-Weighted Magnetic Resonance Imaging in Patients With Temporomandibular Joint Disorder and Unilateral Pain. J Oral Maxillofac Surg. 2019 May 07. PMID: 31153937.

    Read at: PubMed
  • Published on 2/21/2019

    Buch K, Baylosis B, Fujita A, Qureshi MM, Takumi K, Weber PC, Sakai O. Etiology-Specific Mineralization Patterns in Patients with Labyrinthitis Ossificans. AJNR Am J Neuroradiol. 2019 Mar; 40(3):551-557. PMID: 30792250.

    Read at: PubMed
  • Published on 2/21/2019

    Kuno H, Garg N, Qureshi MM, Chapman MN, Li B, Meibom SK, Truong MT, Takumi K, Sakai O. CT Texture Analysis of Cervical Lymph Nodes on Contrast-Enhanced [18F] FDG-PET/CT Images to Differentiate Nodal Metastases from Reactive Lymphadenopathy in HIV-Positive Patients with Head and Neck Squamous Cell Carcinoma. AJNR Am J Neuroradiol. 2019 Mar; 40(3):543-550. PMID: 30792253.

    Read at: PubMed
  • Published on 12/6/2018

    Hiyama T, Kuno H, Sekiya K, Tsushima S, Sakai O, Kusumoto M, Kobayashi T. Bone Subtraction Iodine Imaging Using Area Detector CT for Evaluation of Skull Base Invasion by Nasopharyngeal Carcinoma. AJNR Am J Neuroradiol. 2019 Jan; 40(1):135-141. PMID: 30523140.

    Read at: PubMed
  • Published on 10/31/2018

    Andreu-Arasa VC, Sung EK, Fujita A, Saito N, Sakai O. Otosclerosis and Dysplasias of the Temporal Bone. Neuroimaging Clin N Am. 2019 Feb; 29(1):29-47. PMID: 30466643.

    Read at: PubMed
  • Published on 10/27/2018

    Buch K, Kuno H, Qureshi MM, Li B, Sakai O. Quantitative variations in texture analysis features dependent on MRI scanning parameters: A phantom model. J Appl Clin Med Phys. 2018 Nov; 19(6):253-264. PMID: 30369010.

    Read at: PubMed

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