| artifact | Something artificial, a distortion that does not reflect normal anatomy or pathology, not usually found in the body. For example: in radiology, the appearance on an X-ray of a surgical metal clip that obscures the clear view of an anatomical structure. (16 Dec 1997) |
|---|---|
| chemical shift artifact | In magnetic resonance imaging, a dark band caused by a biochemical difference in resonant frequency of adjacent regions rather than a true anatomic separation. (05 Mar 2000) |