Intraoperative arteriography: comparison of conventional screen-film with photostimulable imaging plate radiographs.
This prospective study compared images obtained with a photostimulable imaging plate with matched images obtained with a conventional screen-film combination in 26 patients undergoing intraoperative arteriography. Diagnostic accuracy of the two techniques was assessed objectively, and image quality was assessed subjectively. In 16 patients (62%), the radiation exposure was reduced by 50% for the imaging plate technique by decreasing the mAs level generally used for the screen-film combination. Because of the dynamic range of the imaging plate system, no repeat examinations were necessary, while 12% of the screen-film studies had to be repeated because of over- or under-penetration. Imaging plate studies required 6% more time for processing than screen-film studies. Receiver-operating-characteristic analysis indicated no difference in diagnostic accuracy between the two imaging techniques. Subjective evaluation also revealed no difference in observer preference for imaging plate or screen-film studies. The imaging plate technique is an excellent alternative to screen-film studies in the operating room.
Pond
G D
GD
Department of Diagnostic Radiology, University of Arizona Health Sciences Center, Tucson 85724.
Seeley
G W
GW
Ovitt
T W
TW
Chernin
M M
MM
Yoshino
M T
MT
Roehrig
H
H
McIntyre
K E
KE
D000792:Angiography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007432:Intraoperative Period; D007866:Leg / Q000098:blood supply; D012372:ROC Curve; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement; D014963:X-Ray Intensifying Screens