Lung cancer is the leading cause of cancer death in both men and women. To successfully fight the disease, doctors use a variety of techniques to diagnose the cancer and determine the extent of its spread throughout the body. When using positron emission tomography (PET) as a diagnostic tool, 18F-FDG has proven to be a reliable and accurate tracer, but false positives have been noted in areas of inflammation. Recently, German researchers conducted a study comparing the results of 18F-FDG PET and 18F-FLT PET and found the latter to be a more precise indicator for diagnosing unclear lung lesions.
The study, published in the September 2003 issue of The Journal of Nuclear Medicine, included examinations of 26 patients with pulmonary nodules revealed on chest CT. Subsequent biopsies confirmed that eighteen of the patients involved had malignant tumors, and eight had benign tumors. Using standardized uptake value (SUV), tumoral uptake was calculated for both 18F-FDG PET and 18F-FLT PET.
Results revealed 18F-FLT SUV correlated better than18F-FDG SUV with the proliferation index. This confirms the theory that 18F-FLT, a tracer specifically designed to reveal the presence of malignant tumors, is better at differentiating cancerous growths from other lesions. While the results show promise for the use of 18F-FLT, they do not indicate 18F-FLT can replace 18F-FDG, which is quite accurate in staging tumors.
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The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....
The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
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