PT  - JOURNAL ARTICLE
AU  - Jonson, Ragnar
AU  - Frid, Ove
TI  - Point-Source Scanner for Assessment of Gamma Camera Performance
DP  - 1992 Mar 01
TA  - Journal of Nuclear Medicine Technology
PG  - 25--28
VI  - 20
IP  - 1
4099  - http://tech.snmjournals.org/content/20/1/25.short
4100  - http://tech.snmjournals.org/content/20/1/25.full
SO  - J. Nucl. Med. Technol.1992 Mar 01; 20
AB  - A point-source scanner was made from a mechanically modified x-y plotter. The pen carriage was stabilized so that it could carry a lead can with a radiation source. It was also made longer so that the scanner would see the whole field of view of a rectangular scintillation camera. The movements of the scanner were controlled by a computer. The statistical uncertainty in the scanning movement, including speed, angle, and distance variations, was less than 1% (1 s.d.). The point-source scanner was used to acquire uniformity matrices for different radiation sources and to generate different kinds of line-source and resolution phantoms.