2007-09-08 10:56:08 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Medicine
MRI artifact refers to any abnormality seen on an MR image that does not directly relate to an actual structural or functional entity. For example, tiny surgical clips can result in large shadows and star flares on an MRI due to their metallic properties. The shadows and flares do not actually exist in the body, they are only artifacts created by the clips. Likewise, other artifacts can occur because of electrical or magnetic interference. With digital imaging and storage it is no longer much of an issue, but in the "old" days when MRI images were transferred to X-ray film, film processing and handling was frequently a cause of artifacts.
2007-09-08 22:52:49 · answer #1 · answered by Anonymous · 3⤊ 0⤋
Any kind of oddity in the image that interferes with its readability. The images are formed on computers and transferred to film only for portability. At the site below are all kinds of artifact and explanations for the causes.
2007-09-08 22:55:06 · answer #2 · answered by Long Tooth 6 · 0⤊ 0⤋
Dust or dirt on the film
2007-09-08 20:03:47 · answer #3 · answered by Anonymous · 0⤊ 3⤋