How is spatial resolution assessed in nuclear medicine cameras?

Spatial resolution in nuclear medicine cameras is primarily assessed by using a bar pattern or line source. This technique involves placing a known pattern, such as a series of lines or bars, in front of the camera and analyzing the ability of the camera to resolve these patterns clearly. The degree to which the camera can distinguish between closely spaced lines or bars is a direct measure of its spatial resolution.

Using a bar pattern provides a quantitative assessment of how well the camera can define the sharpness and clarity of images, which is crucial for accurately interpreting nuclear medicine studies. The distances between the bars are systematically varied to assess resolution limits effectively, helping in quality control and performance evaluations of the imaging system.