"In other words, if you do a CT scan to calculate volume differences in the lungs the first time and then you try to do it again, you get different results every time for the same patient, making ...

Iodine-based contrast material injected intravenously to enhance CT images can be safely used in most patients, according to a study. Of the 80 million or more CT scans performed each year in the ...

Dear Dr. Roach: I'm set to have a CT scan of my lungs with iodine dye. I have hypothyroidism and am on 25 mg of levothyroxine. Should I take the medicine the day of the test? Or should I have the CT ...

Most people who get a contrast-enhanced scan notice something within seconds of the injection — a wave of warmth, a strange metallic taste, maybe a mild wave of nausea. These are acute reactions, and ...