This lecture, to be given by an appropriate radiologist, will introduce the “digital” and performance testing” sessions of the program by discussing current issues perceived by radiologists with digital images.

This lecture continues the theme of the previous lecture, expanding the material to include (and focus on) DR applications. This talk will be supplemented by vendor-

specific information to be covered in Session 5. This talk (and also the previous talk where applicable) should include measurements of fundamental image quality

descriptors and   evaluation tools routinely used by clinical imaging physicists. For example, it may discuss, usefulness and/or applicability of square wave response (as in GE's digital mammography QC program), SNR indicators using ROI measurements, LSF measurements, etc.