scan

• act of scanning, close examination, scrutinizing look; computerized images created by an optical scanner (computers); computerized image of the human body created through the use of medical imaging techniques (medicine)
convert an object or image into a digital image using an optical scanner (computers); browse, glance at quickly; examine a body part through the use of medical imaging techniques (medicine); determine the meter of a verse
when you scan an area, group of things, or piece of writing, you look at it carefully, but often fairly quickly, usually because you are looking for something in particular.
if a machine scans something, it examines it quickly, for example by moving a beam of light or x-rays over it. verb here but can also be used as a count noun. e.g. a liver scan was performed.