MD Anderson Research Shows More Targeted Form of Radiation Improves Survival in Patients With Head, Neck Cancers
Source: Bio News - TexasPublished: January 15, 2014By: Ayesha Khan Recent research conducted at the University of Texas MD Anderson Cancer Center suggests clinical outcomes in patients receiving intensity-modulated radiation therapy (IMRT) for head and neck cancers is more effective when compared to patients who receive traditional radiation therapy, thanks to the advanced technology of IMRT. IMRT precisely targets malignant cells without affecting the normal surrounding tissue, thereby reducing the risk of adverse effects and improving therapy associated effects. The results of this study were published online in the peer-reviewed journal Cancer. What is IMRT? Intensity-modulated radiation therapy, or IMRT, limits the exposure of radiation to normal tissue by employing multiple beams of radiotherapy that helps in setting the dosage by radiologists in accordance with the site and size of tumor. Assistant professor at MD Anderson’s Radiation Oncology, Beth Beadle explained: “Previous studies indicated that patients treated with IMRT did better when it came to treatment-related side effects, however these studies were not designed to examine survival. The survival data was not well-known because IMRT is intended to spare normal tissues but still deliver radiation to the tumor so previous models assumed it was equivalent survival at best.” The technique was approved in 1999, and since then has become increasingly popular mainly because of the high benefits and low toxicity profile. The risk of several common but problematic complications (such as tissue fibrosis, dry mouth, dental issues and musculoskeletal flexibility) can be significantly reduced when compared to conventional radiotherapy. Details [...]