Medical imaging/scans is the technique and process of creating visual representations of the interior of a body &/or the function of some organs or tissues.
Biopies (i.e. image-guided, liver, percutaneous, ultrasound-guided) use a needle to capture small amounts of tissue to be examined under a microscope.
Function studies are performed to see how the various parts of the body "work" … or function. For example, are nutrients being properly absorbed by the body?
X-ray imaging (such as balloon sphincterography, barium enemas and meals, defecography, and small bowel follow-throughs) can help diagnose digestive illnesses.
This branch of radiology deals with the use of radiological imaging methods to apply treatments, and to aim needles to take biopsy samples from body organs.