Trump had initially described it as an MRI but said he didn't know what part of his body he had scanned. A CT scan is a quicker form of diagnostic imaging than an MRI but offers less detail about differences in tissue.

The president raised eyebrows last year when he went for a second physical in the course of one year at the Walter Reed National Military Medical Center, where he completed advanced imaging that was later revealed to be a CT scan.

Rebecca Smith-Bindman, a professor at the University of California-San Francisco medical school, has spent well over a decade researching the disquieting risk that one of modern medicine’s most valuable tools, computerized tomography scans, can sometimes ...

Forbes contributors publish independent expert analyses and insights. Dr. Omer Awan is a practicing physician who covers public health. Lung Cancer, Scan, Essay Can Be Used Only To Illustrate Cancer, Gustave-Roussy Institute, France, Anti-Cancer Center ...

Rebecca Smith-Bindman, MD, a professor at the University of California San Francisco (UCSF) medical school, has spent well over a decade researching the disquieting risk that one of modern medicine's most valuable tools, computerized tomography (CT) scans ...