High-risk prostate cancer patients who undergo a combination of hormonal therapy, radioactive seed implant (also called brachytherapy) and external beam radiation therapy are shown to have an increased chance of cancer cure, according to a new study published in the August 1, 2004, issue of the International Journal of Radiation Oncology*Biology*Physics, the official journal of ASTRO, the American Society for Therapeutic Radiology and Oncology.
Historically, high-risk prostate cancer has been a therapeutic challenge for physicians, despite their efforts to cure patients by aggressively treating them with either surgery, brachytherapy or external beam radiation. Previous studies have shown the 5-year freedom from recurrence rates for high-risk patients treated with just one of these treatments to be between 0 and 50 percent, with up to half of these failures occurring where the original tumor was found.
To see if combining therapies would decrease recurrence rates for men with high-risk prostate cancer, 132 patients with high Gleason scores, with high prostate-specific antigen (PSA) scores or who were at an advanced clinical stage of prostate cancer were studied. A three-pronged approach that included brachytherapy, external beam radiation therapy and hormonal therapy produced an 86 percent rate of freedom from recurrence after five years. In addition, 47 of the original 132 patients in the study had a prostate biopsy performed two years after the end of treatment and 100 percent of them showed no evidence of the cancer recurring.
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A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
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The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
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Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
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The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
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