Direct comparison of conventional and computed radiography with a dual-image recording technique.
To compare the image quality of computed radiographic (CR) with conventional screen-film images, the authors used a dual-image recording technique. Images were simultaneously acquired with a conventional screen-film combination and a storage-phosphor imaging plate loaded into a single cassette. Wiener spectra and modulation transfer function were compared for both image types. A preliminary observer performance test was conducted with chest images obtained with the dual-image recording technique on portable and fixed equipment. Analysis of physical parameters and observer test results suggests that the conventional screen-film system can provide slightly superior image quality, although the CR system has some advantage in bedside applications.
MacMahon
H
H
Kurt Rossmann Laboratories for Radiologic Image Research, Department of Radiology, University of Chicago, IL 60637.
Sanada
S
S
Doi
K
K
Giger
M
M
Xu
X W
XW
Yin
F F
FF
Montner
S M
SM
Carlin
M
M
D016001:Confidence Intervals; D004867:Equipment Design; D006801:Humans; D015588:Observer Variation; D012372:ROC Curve; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000295:instrumentation / Q000379:methods*; D013902:Radiography, Thoracic / Q000295:instrumentation / Q000379:methods; D013057:Spectrum Analysis; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods; D014962:X-Ray Film; D014963:X-Ray Intensifying Screens