CT Screeing for Lung Cancer

Often, patients with lung cancer are diagnosed in much later stages, but now 2 large randomized clinical trials have shown that low-dose computed tomography (CT) scans can help catch the cancer earlier on, according to Taofeek Owonikoko, MD, PhD, MSCR. “The National Lung Screening Trial (NLST) established the basis for screening for patients 55 years…

head ct scans in young adults

Head CT examinations do not put younger patients at a high risk of developing cataracts, according to new research published in Clinical Radiology. The lens is not always included in such scans, the authors noted, and even when it is, the associated radiation doses “appear insufficient to induce cataracts.” The study explored data from more than 410,000 children…

history behind the MRI

Computed Tomography (CT) imaging is also known as “CAT scanning” (Computed Axial Tomography). Tomography is from the Greek word “tomos” meaning “slice” or “section” and “graphia” meaning “describing”. CT was invented in 1972 by British engineer Godfrey Hounsfield of EMI Laboratories, England and by South Africa-born physicist Allan Cormack of Tufts University, Massachusetts. Hounsfield and Cormack were later awarded…

how long does an ct take

The time required will depend upon the type of scan. If oral contrast is required, about 45 to 60 minutes is needed for the contrast to move through your digestive tract. Actual scan times vary from a few seconds to several minutes. If no oral contrast is required, the examination will take about 15 to…

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