US President Donald Trump says he regrets undergoing advanced imagery on his heart and abdomen because of the "ammunition" it handed his critics, but has once more defended his "perfect" health.

Computed tomography (CT) examinations (known more commonly as a “CT scan” or “CAT scan”) incorporate a series of x-ray images taken of areas inside the body and use a computer to create a 3-dimensional (3-D) view. Sometimes doctors inject dye into ...

Out of 1,251 initially eligible individuals, 560 individuals without chest CT scans at hospital admission, 56 individuals with poor computed tomography scan quality, 294 individuals with entirely resolved pulmonary abnormities, and 95 individuals with a previous history of pulmonary disease were excluded from the analysis.

Ninety patients with advanced cancers who developed T-DXd‒related pneumonitis in two completed single-arm clinical trials were included. Three radiologists independently characterized the CT patterns of pneumonitis at diagnosis, for analyses of those ...

For children under age 18 years, a single computed tomography (CT) scan is not associated with an increased risk of brain tumours, leukemia or lymphoma, but exposure to 4 or more scans before adulthood more than doubles the risk, according to new research ...

A new analysis estimates that more than 100,000 cancer cases per year could be caused by radiation from CT scans. In some cases, the information provided by a CT scan could also be obtained from other tests that emit less or no radiation — but CTs can be ...