MUSC Catalyst 2-27-2015

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February 27, 2015

MEDICAL UNIVERSITY of SOUTH CAROLINA

Vol. 33, No. 26

TrueBeam technology targets tumors with eagle-eye precision By Mikie Hayes Public Relations

G

inny Macy casually enters the Hollings Cancer Center in Mount Pleasant with her two daughters as if she’s running into Target to pick up laundry detergent. Smiling, chatting and in good spirits, she sports a slate blue turban which covers both her head and the fact that she lost all her hair during recent rounds of chemotherapy. She kisses her daughters, ages 12 and 9, and heads back for her radiation treatment. The girls sit in the waiting room and debate whether they even have enough time to pull out their homework and get started; they won’t even be there for 15 minutes. Her radiation oncologist, Jennifer Harper, M.D., associate professor in the Department of Radiation Oncology, greets Macy, who then changes into a hospital gown the color of which matches her turban as well as her large, expressive gray-blue eyes. Two radiation therapists, Brie Lawrence and Heather Vickery, take things from there and prepare her for her treatment. Radiation therapists are vital members of the cancer team who actually administer the radiation treatments according to the prescription and instruction of the planning team that is led by the radiation oncologist and includes medical physicists and dosimetrists. Previously, Macy had undergone a lumpectomy and then chemotherapy for breast cancer; this part of her treatment plan includes receiving radiation. Each dose of radiation is called a fraction. Today will be her eighth dose; she has 22 more fractions to go. When a fractionated treatment plan is prescribed, it means the overall necessary dose of radiation for that patient is divided into smaller, better-tolerated doses over the course of many days, weeks even. In Macy’s case, she will undergo a total of 30 fractions. Fractionation is done because it allows normal cells time to recover in the 24 hour interval between treatments. Tumor cells are generally less

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photos by Sarah Pack, Public Relations

Radiation therapists Heather Vickery, left, and Brie Lawrence position patient Ginny Macy in the TrueBeam linear accelerator for her radiation treatment at Hollings Cancer Center Mount Pleasant. efficient in repair between fractions, which results in tumor cell death. The radiation she receives comes in the form of photon energy that is generated from a machine called a linear accelerator. And this is not just any linear accelerator: This is the most advanced generation Varian TrueBeam — the Rolls Royce of the field. This accelerator delivers pinpoint doses of radiation quickly, precisely and in such a way as to minimize damage to normal surrounding tissues. It is housed in a special room called the vault which was built to exacting safety specifications with six-foot-thick concrete walls and reinforced floors and safety doors. While the vault might have an ominous sound to it, it’s quite the contrary. The lighting is warm and the therapists can pipe in music through the TrueBeam that

Diplomatic Visit Tanzanian Ambassador thanks MUSC for partnership.

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See TrueBeaM on page 6

Brie Lawrence communicates with Macy and prepares to administer her treatment.

Author Speaks

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READ THE CATALYST ONLINE - http://www.musc.edu/catalyst

10 11 Employee Patient Welllness Safety Awareness


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