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Clinical Experts Describe Radiosurgical Advances for Brain, Breast, and Spinal Cancers

Tue, 11/16/2010 - 4:36am
Bio-Medicine.Org

PALO ALTO, Calif., Nov. 16, 2010 /PRNewswire/ -- Talks on major advances in radiosurgery and radiotherapy for treating cancer of the brain, breast, and spine, captured the attention of more than 800 clinicians at Varian Medical Systems' 2010 Annual Users Meeting, held recently in conjunction with the annual meeting of the American Society for Radiation Oncology (ASTRO) in San Diego.  

Samuel Ryu, M.D., director of radiosurgery at Henry Ford Hospital in Detroit, Michigan, reported that radiosurgery enabled him to reduce the tumor volume and improve neurological functioning for 80 percent of his patients with paraspinal tumors.  Dr. Ryu referred to his recently-published study about treating metastatic lesions of the spine using a single stereotactic radiosurgery, specifically when tumors are compressing the spinal cord and causing neurological problems(1).  "Although surgery followed by radiotherapy is the standard treatment for these cases, radiosurgery appears to be a viable noninvasive treatment option," he said.  "It offers rapid pain and neurologic relief, without the invasiveness and long recovery times associated with conventional surgery."  

Gated RapidArc for Breast Cancer Varian's Gated RapidArc® technology for managing respiratory motion made it possible to improve the protection of heart and lungs during treatments for cancer in the left breast, according Lucca Cozzi, PhD, head of research at the Oncology Institute of Southern Switzerland.   Cozzi demonstrated that treatment plans using Gated RapidArc are generally superior to plans using conventional IMRT in these cases.  "Respiratory gating is an excellent tool for cases where respiration is the dominant source of motion during treatment," Cozzi said, citing the results of a study that his team recently published, validating the reliability and accuracy of RapidArc dose delivery(2).

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