Fig. 2From: Assessment of the axial resolution of a compact gamma camera with coded aperture collimatorImages were captured with source-to-mask distances from 12 to 20 mm in 2 mm steps and from 25 to 100 mm in 5 mm steps (21 positions). The photograph in the top right corner shows the source holder on the left and the gamma camera in its housing with parts of the Tungsten mask visible on the rightBack to article page