http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Acute heart attack patients received an average total dose of ionizing radiation equal to 725 chest X-rays from medical tests during their hospital stay, according to research presented at the American Heart Association's Scientific Sessions 2009. http://www.physorg.com/news177595932.html Medicine & Health Mon, 16 Nov 2009 12:40:02 EST news177595932 For the first time, researchers at Fred Hutchinson Cancer Research Center have reported the use of a radiolabeled antibody to deliver targeted doses of radiation, followed by a stem cell transplant, to successfully treat a group of leukemia and pre-leukemia patients for whom there previously had been no other curative treatment options. http://www.physorg.com/news176644890.html Medicine & Health Thu, 05 Nov 2009 12:30:01 EST news176644890 Researchers at Fox Chase Cancer Center found that radiation treatment for women who had a lumpectomy for early-stage breast cancer can be safely reduced to four weeks, instead of the usual six to seven weeks, by delivering a higher daily dose--greatly reducing the length of treatment time. The five-year results of the phase II study will be presented today at the annual meeting of the American Society for Radiation Oncology. http://www.physorg.com/news176567679.html Medicine & Health Wed, 04 Nov 2009 16:10:02 EST news176567679 Men who receive a "boost" of proton therapy after receiving a standard course of X-ray radiation therapy have fewer recurrences of their prostate cancer compared to men who did not receive the extra dose of proton radiation, according to a first-of-its-kind study presented November 2, 2009, at the American Society for Radiation Oncology's 51st Annual Meeting in Chicago. The multi-institutional, randomized trial also shows that the high dose treatment is safe for these patients and causes no severe problems later with urinary or bowel functions. http://www.physorg.com/news176400223.html Medicine & Health Mon, 02 Nov 2009 23:40:01 EST news176400223 Obesity, not the amount of radiation given, is the greatest factor in whether early-stage lung cancer patients develop chest wall pain after receiving stereotactic body radiation therapy to the chest wall, with obese patients being more than twice as likely to develop chronic pain compared to those who have less body weight, according to a first-of-its-kind study presented Tuesday, November 3, 2009, at the 51st Annual Meeting of the American Society for Radiation Oncology (ASTRO). http://www.physorg.com/news176396973.html Medicine & Health Mon, 02 Nov 2009 16:40:01 EST news176396973 Short-term hormone therapy given prior to and during intermediate dose radiation treatment for men with early stage prostate cancer increases their chance of living longer, compared to those who receive the same radiation alone, according to a Radiation Therapy Oncology Group (RTOG) study, the largest randomized trial of its kind, presented November 2, 2009, at the American Society for Radiation Oncology (ASTRO) annual meeting. The RTOG trial noted that this benefit appeared to be greatest for men currently defined as at medium-risk for disease failure. http://www.physorg.com/news176387429.html Medicine & Health Mon, 02 Nov 2009 12:30:53 EST news176387429 (PhysOrg.com) -- Quantum mechanics could help build ultra-high-resolution electron microscopes that won't destroy living cells, according to MIT electrical engineers. http://www.physorg.com/news174035443.html Physics Tue, 06 Oct 2009 08:12:08 EST news174035443 Radiologists have discovered that prospective electrocardiogram (ECG) gating allows them to significantly reduce the patient radiation dose delivered during computed tomography (CT) angiography, a common noninvasive technique used to evaluate vascular disease, according to a study published in the October issue of the American Journal of Roentgenology (AJR). http://www.physorg.com/news172733633.html Medicine & Health Mon, 21 Sep 2009 08:40:04 EST news172733633 In 1991, Ge Wang produced the first paper on spiral cone-beam computed tomography (CT), now an imaging technique used in the mainstream of the medical CT field. Today, Wang, known as a pioneer in this field, and his colleagues have been awarded more than $1.3 million from the National Science Foundation to develop the next-generation nano-CT imaging system, which promises to greatly reduce the required dose of radiation. Virginia Tech and Xradia, a leading nano-CT company, are also collaborating on the project with a cost-sharing investment of close to $800,000. http://www.physorg.com/news171194704.html Nanotechnology Thu, 03 Sep 2009 11:30:02 EST news171194704 The Radiological Society of North America (RSNA) reaffirmed its commitment to patient safety today in responding to a study and accompanying perspective on radiation dose from medical imaging procedures in the New England Journal of Medicine (NEJM). http://www.physorg.com/news170596904.html Medicine & Health Thu, 27 Aug 2009 13:20:03 EST news170596904 A study based on computer modeling of radiation risk suggests that widespread screening for the buildup of calcium in the arteries using computed tomography scans would lead to an estimated 42 additional radiation-induced cancer cases per 100,000 men and 62 cases per 100,000 women, according to a report in the July 13 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. http://www.physorg.com/news166722955.html Medicine & Health Mon, 13 Jul 2009 20:00:01 EST news166722955 (AP) -- Government experts called for sweeping safety restrictions Tuesday on the most widely used painkiller, including reducing the maximum dose of Tylenol and eliminating prescription drugs such as Vicodin and Percocet. http://www.physorg.com/news165598861.html Medicine & Health Tue, 30 Jun 2009 16:41:30 EST news165598861 While screening for possible pulmonary emboli using pulmonary CT angiography, a new study shows that radiologists can effectively lower the patient radiation dose by approximately 44% and improve vascular enhancement without deterioration of image quality, according to a study performed at Brigham and Women's Hospital and Harvard Medical School, Boston, MA. http://www.physorg.com/news165590420.html Medicine & Health Tue, 30 Jun 2009 14:50:01 EST news165590420 Emergency physicians who evaluate patients with non-specific chest pain using whole chest multi-detector CT (MDCT) combined with retrospective electrocardiogram (ECG) gating can reduce the patient radiation dose by 71% using MDCT combined with prospective ECG triggering instead, according to a study performed at the University of Washington School of Medicine, Seattle, WA. http://www.physorg.com/news164999304.html Medicine & Health Wed, 24 Jun 2009 03:10:01 EST news164999304 An intervention that includes techniques to reduce the amount of radiation from cardiac computed tomography angiography (scanning used to diagnose coronary artery disease) was associated with decreasing patient exposure to radiation without significantly changing the quality of the images, according to a study in the June 10 issue of JAMA. http://www.physorg.com/news163822515.html Medicine & Health Wed, 10 Jun 2009 03:15:57 EST news163822515 The Phantom Torso is back, and he has quite a story to tell. He's an armless, legless, human-shaped torso, a mannequin that looks like he's wrapped in a mummy's bandages. Scientists at the European Space Agency call him Matroshka, and like his NASA counterpart Fred, this mannequin is an intrepid space traveler. Now that he's spent four months on the International Space Station, scientists are learning about the space radiation that Matroshka endured. http://www.physorg.com/news162746684.html Space & Earth Thu, 28 May 2009 16:25:53 EST news162746684 (AP) -- A Food and Drug Administration report released Wednesday recommends stronger warnings and dose limits on drugs containing the painkiller acetaminophen, citing an increased risk of liver injury. http://www.physorg.com/news162669414.html Medicine & Health Wed, 27 May 2009 18:57:09 EST news162669414 Physicians should review a patient's CT imaging history and cumulative radiation dose when considering whether to perform another CT exam, according to researchers at Brigham and Women's Hospital, Boston, MA, and Washington University School of Medicine, St. Louis, MO. http://www.physorg.com/news160761039.html Medicine & Health Tue, 05 May 2009 16:51:13 EST news160761039 Higher doses of radiation combined with chemotherapy improve survival in patients with stage III lung cancer, according to a new study by researchers at the University of Michigan Comprehensive Cancer Center. http://www.physorg.com/news158409811.html Medicine & Health Wed, 08 Apr 2009 11:44:02 EST news158409811 Physicians can dramatically reduce the radiation dose delivered to patients undergoing coronary CT angiography in a "triple rule-out" protocol by simply using tube current modulation, according to a study performed at Thomas Jefferson University Hospital in Philadelphia, PA. http://www.physorg.com/news157985497.html Medicine & Health Fri, 03 Apr 2009 13:52:13 EST news157985497 Patients who undergo numerous CT scans over their lifetime may be at increased risk for cancer, according to a study published in the April issue of Radiology. http://www.physorg.com/news157709697.html Medicine & Health Tue, 31 Mar 2009 09:15:29 EST news157709697 At the radiation dose levels used in cardiac imaging exams, such as cardiac CT or nuclear medicine scans, the risk of potentially harmful effects from ionizing radiation are low. However, since the exact level of risk is not known, people without symptoms of heart disease should think twice about seeking, or agreeing to, these types of cardiac studies. This is the conclusion of an advisory committee convened by the American Heart Association's Council on Clinical Cardiology and Council on Cardiovascular Radiology and Intervention. A Mayo Clinic cardiologist led the committee. http://www.physorg.com/news152819843.html Medicine & Health Mon, 02 Feb 2009 17:57:43 EST news152819843 Analgesics, NSAIDs and acetaminophen, are commonly used for the relief of fever, headaches, and other minor aches and pains. The gastrointestinal side effects of NSAIDs are well documented and acetaminophen is accepted to be a safe drug for the gastrointestinal system. Acute effects of short-term, especially high-dose NSAID and acetaminophen use have not been studied adequately. http://www.physorg.com/news149776670.html Medicine & Health Mon, 29 Dec 2008 12:37:50 EST news149776670 Researchers from Boston University School of Medicine (BUSM) have determined the optimal dose-management strategy to derive maximal benefit from warfarin therapy and improve patient outcomes. Results of the study appear online in the December 2008 issue of the Journal of Thrombosis and Haemostasis. http://www.physorg.com/news149168990.html Medicine & Health Mon, 22 Dec 2008 11:49:50 EST news149168990 (PhysOrg.com) -- Scientists at Duke University Medical Center have identified genetic mutations that may help explain why some people don't respond very well to statins, drugs taken by millions of Americans to fight high cholesterol and prevent coronary artery disease. http://www.physorg.com/news148751688.html Medicine & Health Wed, 17 Dec 2008 15:54:48 EST news148751688 Individuals younger than 50 who have been previously vaccinated do not appear to have a substantially different immune response to a half-dose of influenza vaccine than to a full dose, according to a report in the December 8/22 issue of Archives of Internal Medicine, one of the JAMA/Archives journals. This suggests that half-dose vaccination in healthy young individuals may be effective in times of vaccine shortage. http://www.physorg.com/news147980207.html Medicine & Health Mon, 08 Dec 2008 17:36:47 EST news147980207 Two drugs approved as fallback therapy for chronic myelogenous leukemia (CML) appear to outperform historical benchmarks of the frontline medication when used as a first treatment in separate clinical trials, researchers at The University of Texas M. D. Anderson Cancer Center reported at the 50th Annual Meeting of the American Hematological Society. http://www.physorg.com/news147979820.html Medicine & Health Mon, 08 Dec 2008 17:30:20 EST news147979820 One fifth of the standard dose of a commonly used meningitis vaccine may be as effective as using the full dose. This new finding should allow scarce vaccine resources to be stretched further, especially during epidemics in Africa. http://www.physorg.com/news147697933.html Medicine & Health Fri, 05 Dec 2008 11:12:13 EST news147697933 A partial dose of a commonly used vaccine against meningitis may be as effective as a full dose, according to new research published December 2 in the open-access journal PLoS Neglected Tropical Diseases. Fractional dosing would enable large-scale vaccination campaigns during epidemics, especially at a time of global vaccine shortages. http://www.physorg.com/news147443831.html Medicine & Health Tue, 02 Dec 2008 12:37:11 EST news147443831 A new drug has been shown to improve the brain function of people with early stage Alzheimer's disease and reduce a key protein associated with the disease in the spinal fluid, in a small study published today in the journal Lancet Neurology and presented at the 2008 Alzheimer's Association International Conference on Alzheimer's Disease. http://www.physorg.com/news136567274.html Medicine & Health Tue, 29 Jul 2008 16:21:14 EST news136567274