Nonuniformity intrinsic flood artifact caused by point-source syringe needle.
作者信息
Hackett M T, Magoun S L, Thompson R B
机构信息
Nuclear Medicine Service, Department of Veterans Affairs Medical Centers, Lexington, Kentucky 40511-1093, USA.
出版信息
J Nucl Med Technol. 1997 Mar;25(1):41-3.
UNLABELLED
The purpose of this study was to investigate the cause of a nonuniformity artifact seen on an intrinsic flood.
METHODS
Intrinsic floods were acquired on three different cameras using a point source in a 1-cc syringe, with and without a needle attached. Floods were obtained with the syringe placed perpendicular and parallel to the camera face.
RESULTS
A nonuniformity artifact was evident if a syringe with a needle was placed perpendicular to the crystal face.
CONCLUSION
If a syringe is used as a point source during the acquisition of an intrinsic quality control flood, the needle should not be placed perpendicular to the camera face.
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