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Limbal Stem Cells - To Be Or Not To Be?
There has been a recent questioning of the role of the limbal stem cell in corneal maintenance and the recent Association for Research in Vision and Ophthalmology (ARVO) meeting in Fort Lauderdale May 3 -7, 2009 saw some fairly hot debate son this topic. Professor Colin Green, University of Auckland, New Zealand reviews an interesting series of sessions for The Society for Clinical Ophthalmology.
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IPS Examines Obstetric Fistula In Southern Senegal
Inter Press Service News Agency examines the prevalence of obstetric fistula in the southern region of Senegal. According to state reproductive health officials in the town of Kolda, 58 percent of births take place at home without medical assistance. "Women in the region suffer from exceptionally high rates of fistula," which "occurs when extended pressure damages the soft tissue in a woman"s pelvis during the process of giving birth" and can lead to debilitating complications and ostracization from their families, IPS writes.
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More Effective Cancer Treatment And The Migration Of Modern Man From Africa To Western Eurasia
The Collaborative Research Centre 806 "Unser Weg nach Europa: Kultur-Umwelt-Interaktion und menschliche Mobilität im Späten Quartär" (Our Road to Europe: Culture-Environment-Interaction and human Mobility in the late Quaternary) will be directed by Professor Dr. JÃørgen of the Department of Pre- and Protohistoric Archaeology. This research centre is looking at the mobility of populations in the last 190,000 years. The focus of research will be the journey of modern man from Africa to Western Eurasia and Europe, in particular. Migration processes, and the exchange of ideas, technology and culture that entails, are an important prerequisite for important developments. The centre"s main aim is to research, using scientific and archaeological methods, how human behaviour, the climate and the environment influenced important population movements. The scientists particularly want to examine the impacts that these factors have had on the actions and reactions of populations such as emigration, immigration and adaptation to new environments. Other universities and institutions are also involved the project. These include: the University of Bonn; RWTH Aachen University; Heidelberg University; the University of Duisburg-Essen as well as the Rhineland Regional Council; the Rheinisches Amt fÃør Bodendenkmalpflege (Rheinland Department for the Preservation and Care of Field Monuments) as well as the Neanderthal Museum in Mettmann.
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Researchers Find A Way To Reduce Patient Radiation Dose During Pulmonary CT Angiography

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. A total of 400 patients believed to have a pulmonary embolism were evaluated using pulmonary CT angiography. Two hundred patients were evaluated using the standard peak kilovoltage setting of 130 or 120 kVp and the other 200 patients were evaluated using a low peak kilovoltage setting of 110 or 100 kVp. "Results showed that lowering the peak kilovoltage setting by 20-kVp lead to superior vascular enhancement without deterioration of image quality allowing us to effectively reduce the patient radiation dose," said Shin Matsuoka, MD, lead author of the study. "CT has become an essential tool for the diagnosis of pulmonary embolism. However because of the high percentage of negative results, radiation exposure has become an important issue. Our study shows that lowering the kilovoltage setting may be an effective method of lowering the radiation dose for most patients," he said. "Lowering the kilovoltage setting is something that could be easily incorporated into daily clinical practice because there is no additional equipment needed and there are no extra costs," said Dr. Matsuoka. This study appears in the June issue of the American Journal of Roentgenology. About ARRS The American Roentgen Ray Society (ARRS) was founded in 1900 and is the oldest radiology society in the United States. Its monthly journal, the American Journal of Roentgenology, began publication in 1906. Radiologists from all over the world attend the ARRS annual meeting to participate in instructional courses, scientific paper presentations and scientific and commercial exhibits related to the field of radiology. The Society is named after the first Nobel Laureate in Physics, Wilhelm Rç¶entgen, who discovered the x-ray in 1895. American Roentgen Ray Society


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