Sandra B. Brennan, MBBCh, BAO; FRCR

About Me

I am a board-certified radiologist. I completed fellowship training in breast and body imaging at Memorial Sloan Kettering and I have been committed to providing excellent care to my patients, contributing to research advancements, and teaching since joining MSK in 2006.

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I have served as Director of Radiology at MSK Westchester since it opened. I am proud to work alongside my many distinguished colleagues in the Breast Service in the Department of Surgery, the Breast Cancer Medicine Service, the Department of Radiation Oncology, and other disciplines. We provide high-quality care that is timely and compassionate. At MSK Westchester, we are committed to extending world-class cancer care to our neighbors in Westchester. I am also delighted to be a part of the care team at the Evelyn H. Lauder Breast Center in Manhattan.

I work primarily with breast imaging but also do body imaging. I interpret screening and diagnostic mammograms, breast ultrasound examinations, and breast MRIs. I am an expert in performing minimally invasive breast biopsies using image guidance. I also perform breast localizations with both radioactive seeds and wires. For women having surgery, I do sentinel node injections.

I have gained local, national, and international recognition as a researcher and educator in breast imaging. I have presented my research on the radiologic-pathologic correlation and high-risk screening at national and international meetings.

  • Clinical Expertise: Breast Imaging (MRI, Digital Mammography, Tomosynthesis, Ultrasound, Image-Guided Breast Biopsies); Body Imaging (CT, Ultrasound)
  • Languages Spoken: English
  • Education: MBBCh, BAO; BMedSc; MSC; University College Dublin (Ireland)
  • Residencies: Mater Misericordiae Hospital (Dublin, Ireland)
  • Fellowships: Memorial Sloan Kettering Cancer Center
  • Board Certifications: Radiology (US, UK, and Ireland); Medicine (Ireland)


Visit PubMed for a full listing of Sandra B. Brennan’s journal articles

Pubmed is an online index of biomedical articles maintained by the U.S. National Library of Medicine and the National Institutes of Health.

Clinical Trials

As home to one of the world’s top cancer research centers, Memorial Sloan Kettering is typically involved in more than 900 clinical trials at a given time. Currently, clinical trials focused on the conditions I treat are enrolling new patients. If you’re interested in joining a clinical trial, click to learn about the trial’s purpose, eligibility criteria, and how to get more information.

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Most major health insurers offer plans that include MSK as one of their in-network providers. If MSK is in-network, it means all our doctors are too. Medicaid and New York State Medicare also provide benefits for care at MSK.

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