Computed tomography -- also known as computed axial tomography, a CT scan, or a CAT scan -- is a tool doctors use to diagnose many types of health problems. Special X-ray equipment creates images of ...

Semiconductor detectors that directly measure the electrical signals produced by X-rays have hugely improved the resolution and contrast of computed tomography scanners. In the 1970s computed ...

Researchers have developed a low-cost, portable radiation dosimetry system that turns a smartphone into an on-site radiation detector. The system combines a small piece of radiochromic film with a ...

A new CT (computed tomography) scan method can reduce radiation dose by splitting a full C-ray beam into thin and small beamlets. A team of researchers at the University College London (UCL) ...

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In hospitals, clinics, and unaffiliated radiologists' offices throughout the world, computed tomography (CT) scans are increasingly the diagnostic tool of choice. The reason for the explosive growth ...

CHICAGO, June 7 (Reuters) - A number of studies in the past year have raised concerns that Americans are exposed to too much radiation from CT scans, increasing their risk of cancer. [ID:nN01116048] A ...