Radiology, Vol 170, 367-370, Copyright © 1989 by Radiological Society of North America
Intraoperative arteriography: comparison of conventional screen-film with photostimulable imaging plate radiographs
GD Pond, GW Seeley, TW Ovitt, MM Chernin, MT Yoshino, H Roehrig and KE McIntyre
Department of Diagnostic Radiology, University of Arizona Health Sciences Center, Tucson 85724.
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.
