Test all systems to ensure they’re performing correctly.We limit the region of the body being scanned/ x-rayed to the smallest possible area.Utilize more sensitive nuclear medicine imaging equipment (such as single photon emission computed tomography and positron emission tomography scanners) lets us use smaller doses of radiotracers (a radioactive molecule used in certain imaging tests to help find problems in the body).Digital X-ray detectors, special X-ray beam filters, and other new technologies reduce radiation doses in radiography, mammography, and fluoroscopy.Our Physics Quality Control Group works in conjunction with radiologists and technologists to identify and purchase imaging systems with features that minimize radiation dose.We have pursued several important measures to minimize radiation exposure without sacrificing image quality, including: Taking Big Steps to Lower Radiation for Our Patients Patients are virtually always better off having a needed imaging study than avoiding the modest radiation associated with it. The most important message regarding radiation is that of relative risk.If you don’t get the exam, you save the radiation, but don’t get the diagnostic information. However, it’s a tradeoff: If you get the exam, you get the diagnostic information needed. You don’t have to have any examination recommended.Patients should look for an imaging facility that is accredited and physicians who are board-certified, which will increase chances for the best study at the lowest dose. Our average radiation dose at the Univeristy of Michigan is now 9 mSv. Below 100 mSv, don’t worry above that number, we think you’re at increased risk. A threshold typically used is 100 thousandths of a sievert, or 100 millisieverts (mSv).
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