J Med Phys Close
 

Figure 4: Unshielded (a) and shielded (b) CT images of one slice of the calibration phantom (In both images the grayscale ranges from 0-1211)

Figure 4: Unshielded (a) and shielded (b) CT images of one slice of the calibration phantom (In both images the grayscale ranges from 0-1211)