Woodruff School of Mechanical Engineering

NRE/MP Seminar

Nuclear & Radiological Engineering and Medical Physics Programs


Gamma Knife: Overview and Experience


Ms. Sara Rahnema


Emory Healthcare


Thursday, September 14, 2017 at 11:00:00 AM


Boggs Building, Room 3-47


Farzad Rahnema


Gamma knife is a cobalt 60 teletherapy unit used for stereotactic radiosurgery of the brain. It’s unique design results in a high precision machine with dosimetric advantages over other modalities used for this type of treatment. Using advanced imaging within a stereotactic space allows for high doses of radiation to be delivered with sub millimeter accuracy. Quality assurance of the treatment unit as well as the imaging machines (MRI/CT) are especially important in order to accurately target and deliver these types of treatments. Sara Rahnema will give an overview of the history, uses, principles and quality assurance of a gamma knife unit.


Sara Rahnema, MS, DABR, joined the Emory staff in 2012 as a clinical medical physicist at Emory Saint Joseph's Hospital. Currently, she is the lead physicist at Emory Saint Joseph’s Hospital. She earned her Bachelors of Science degree in Nuclear Engineering from the Georgia Institute of Technology in 2008 and a Masters of Science degree in Medical Physics also from the Georgia Institute of Technology in 2010. Sara is board certified in Therapeutic Medical Physics by the American Board of Radiology. She is an active member of the American Association of Physicists in Medicine, American Society of Therapeutic Radiology and Oncology, American Brachytherapy Society and the Leksell Gamma Knife Society. She is active in all areas of radiation oncology with a special interest in brachytherapy and Gamma Knife treatments. She is also a part of the teaching programs for MD and medical physics residents as well as the Georgia Tech medical physics students.


Refreshments will be served.