TY  - JOUR
UR  - http://publicatio.bibl.u-szeged.hu/31574/
JF  - NUCLEAR MEDICINE REVIEW: CENTRAL AND EASTERN EUROPE
SP  - 41
VL  - 1
N2  - BACKGROUND: Investigation of the applicability of the dynamic line phantom for determination o the uniformity of circular and rectangular field-of-view gamma cameras. METHODS: Count rate - activity and uniformity - count rate functions were determined by the dynamic line phantom on three circular field-of-view gamma cameras with 37 PMTs, on one circular field of view camera with 19 PMTs, and on one rectangular field-of view gamma camera with 59 PMTs, with and without a collimator. For an evaluation of the efficacy of the dynamic line phantom, the results were compared with the uniformity values obtained with a 99mTc point source and a 57-Co sheet source. RESULTS: In the optimum count rate range (20,000-30,000 cps for a circular field-of-view, 15,000-65,000 cps for a rectangular field-of-view) determined individually for each gamma camera, the uniformity values obtained with the dynamic line phantom did not differ statistically from the refined with the 99mTc point source or the 57-Co sheet source. CONCLUSIONS: The dynamic line phantom is suitable for the determination of detector uniformity, but the measurements should be performed within a well-defined activity (count rate) interval.
EP  - 45
A1  -  Séra Teréz Emese
A1  -  Mester János
A1  -  Csernay László
A1  -  Pávics László
AV  - restricted
ID  - publicatio31574
SN  - 1506-9680
TI  - Investigation of gamma camera detector uniformity using a dynamic line phantom
IS  - 1
Y1  - 1998///
ER  -