Equally Spaced Parallel-Bar Phantom for Performance Monitoring of Scintillation Cameras

Abstract

A series of transmission phantoms with equally spaced parallel bars has been designed and evaluated as performance monitors of the linearity and resolving power of scintillation cameras. Each phantom in the series has bars of equal width and spacing. The series has a range of bar widths from 3 to 7 mm in 1-mm increments. The concept is to use that one phantom with bar specifications which are best suited to assess the resolving power of a given camera. The results show that improved quality assurance monitoring is accomplished using this technique as compared to using existing phantoms. It is recommended that scintillation cameras be equipped with this type of phantom at time of purchase.