Dynamic mode LSF measurements for the scintillation camera.

A method is presented to improve the measurements of line spread function (LSF) of gamma cameras that makes use of a digital computer and a moving line source of radioactivity. Data acquisition is done in the dynamic mode with the computer, while the source moves across the collimator face. The resulting LSFs are defined with many curve points that enable very precise calculation of the corresponding modulation transfer function (MTF). The method is easily used in routine checking of gamma cameras. It makes possible a quick and precise determination of LSF for any point in the field of view of the detector.