Study Faster Ct Scanners Mean Less Radiation Exposure
02.24.10 |
New technology is helping doctors limit the amount of radiation their patients are exposed to during CT scans of the heart. Traditional CT scanners can only get a complete picture during a coronary angiography by spiraling around a patient and taking dozens of images that each look at a thin slice of the heart muscle. It is a high radiation dose procedure. However, Dr. Andrew Einstein of Columbia University Medical Center in New York found that new scanners that can quickly capture the entire heart on film in a single heartbeat give off only about a tenth of the radiation of the traditional scans. Einstein used the Toshiba Aquilion ONE scanner for his study because it can do both single-beat and traditional heart CT scans. The Siemens Somatom Definition Flash also has a single-beat feature. The study is published in the journal "Radiology."
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