PT  - JOURNAL ARTICLE
AU  - Michael T. Hackett
AU  - Sylvia L. Magoun
AU  - Rosemary B. Thompson
TI  - Nonuniformity Intrinsic Flood Artifact Caused by Point-Source Syringe Needle
DP  - 1997 Mar 01
TA  - Journal of Nuclear Medicine Technology
PG  - 41--43
VI  - 25
IP  - 1
4099  - http://tech.snmjournals.org/content/25/1/41.short
4100  - http://tech.snmjournals.org/content/25/1/41.full
SO  - J. Nucl. Med. Technol.1997 Mar 01; 25
AB  - 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.