Film density calibration for computed radiography systems: is the standard three-point procedure accurate?
With computed radiography (CR) systems, laser printer-film processor combinations are normally checked daily by using test film three-point density measurements. In this study, the authors show that the recommended three-point quality assurance procedure can show satisfactory results even though the CR film output behaves in an anomalous manner. This problem can be corrected by using a 16-point calibration procedure. Regular 16-point calibrations should be performed to ensure satisfactory CR system performance.
Huda
W
W
Department of Radiology, College of Medicine, J. Hillis Miller Health Center, University of Florida, Gainesville 32610-0374.
Jing
Z
Z
Hoyle
B A
BA
D002138:Calibration; D011786:Quality Control; D011856:Radiographic Image Enhancement; D014057:Tomography, X-Ray Computed; D014962:X-Ray Film