Results from a University of Pittsburgh study evaluating intensity modulated radiation therapy (IMRT) for breast cancer indicate that IMRT results in a lower dose of radiation to healthy breast tissue when compared to standard radiation. The findings were presented today at the 46th Annual Meeting of the American Society for Therapeutic Radiology and Oncology (ASTRO) in Atlanta.
"More than 70 percent of breast cancer patients receive ionizing radiation therapy to treat their disease," said Dwight E. Heron, M.D., study co-author and assistant professor of radiation oncology, University of Pittsburgh School of Medicine and vice chairman of radiation oncology, University of Pittsburgh Medical Center. "While these high-energy beams are targeted to the tumor site as precisely as possible, they often inadvertently injure healthy breast tissue that surrounds the tumor site, limiting the doses of radiation that can be used to effectively destroy cancer cells. With this study, we sought to discover whether tightly focused radiation beams, such as those provided by IMRT, would make a difference in the amount of radiation received by the side of the breast opposite from the tumor site."
In the study, 65 patients with breast cancer who had received breast-conserving surgery were treated with IMRT using the Eclipseâ Planning System, Varian Medical Systems, and compared with 18 patients treated with conventional 2D or 3D radiation therapy. Results indicated a 35 percent reduction in radiation dose to the breast opposite the tumor site at the 4 cm position from the patients midline and a 57 percent reduction at the 8 cm position in favor of those patients treated with IMRT.
Clare Collins | EurekAlert!
Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg
The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
17.02.2017 | Medical Engineering
17.02.2017 | Medical Engineering
17.02.2017 | Health and Medicine