bnartifact1.gif (12213 bytes)
COLLIMATOR

Uniformity is a parameter of the scintillation camera that depicts the variability of count density and distribution. A homogenous distribution of activity is essential to good diagnostic technique.  Non uniformity may be visualized as either a "hot" or "cold" spot.  A flood study would rule out non uniformities. Collimator defects or improper adjustment of the x and y deflector plates in the CRT (cathode ray tube) can cause this artifact.


                            

collimator.gif (42304 bytes)

btback.gif (3305 bytes)

HOME     INDICATIONS     NORMAL     ARTIFACTS     ABNORMAL

PROTOCOLS    CASES STUDIES

Copyright 2001 University of Pennsylvania School of Veterinary Medicine
Faculty Sponsor: Dr. Michael W. Ross
Technologist: Vivian S. Stacy CNMT
Comments and suggestions to vstacy@vet.upenn.edu