Abstract: A device and method for evaluating the performance of X-ray machines used to produce radiographic images is described. An analyzer including an X-ray dosimeter and an imaging device is sent to the facility having the X-ray machine to be evaluated. The analyzer may be used with a film pack or a digital image detector. The analyzer is exposed in accordance with testing instructions and returned to an evaluation agency. The radiation dose and HVL is determined from the dosimeter, and the image quality is determined from analysis of a radiograph of a target having differing X-ray absorption portions. A data base of results may be used to provide comparative analysis.

Abstract: A device and method for evaluating the performance of X-ray machines used to produce radiographic images is described. An analyzer including an X-ray dosimeter and an imaging device is sent to the facility having the X-ray machine to be evaluated. The analyzer may be used with a film pack or a digital image detector. The analyzer is exposed in accordance with testing instructions and returned to an evaluation agency. The radiation dose and HVL is determined from the dosimeter, and the image quality is determined from analysis of a radiograph of a target having differing X-ray absorption portions. A data base of results may be used to provide comparative analysis.

Abstract: A phantom for evaluating the operating performance of a magnetic resonance imaging scanner system includes a generally tubular body enclosed at its ends and containing a cylindrical stack of a plurality of leaves. Each leaf has one or more wedge-shaped slices or sectors cut out for identification and reference purposes. Leaves having one, two and four slices formed therein are arranged in a predetermined order in the stack with the slices in a predetermined helical pattern approximately eighteen degrees apart. The container is filled with a liquid and is inserted in the magnetic resonance imaging system to obtain images which can be evaluated to determine if the system is in calibration. A typical evaluation determines MRI slice thickness, slice location, and contiguity of the slices.