A sensitometric comparison of Kodak Ektavision and Fuji Super HR-S panoramic radiographic films.
OBJECTIVE
The purpose of this study was to compare the combination of Ektavision film and Ektavision intensifying screen with the combination Super HR-S panoramic radiographic film and HR-4 intensifying screen with respect to sensitometric properties and the visualization of anatomic structures.


METHODS
The density response and resolution of both panoramic radiographic film/intensifying screen combinations were evaluated through use of the generated characteristic curves and the modulation transfer function. The diagnostic clarity was evaluated by five oral and maxillofacial radiologists who used a rating scale to evaluate the image clarity of selected anatomic structures.


RESULTS
The film speed and radiographic contrast, respectively, were 1.3 and 1.2 times higher for Ektavision than for Super HR-S. The image resolution with Ektavision was similar to that with Super HR-S. Ektavision was perceived to provide clearer images of the selected anatomic details than did Super HR-S.


CONCLUSIONS
With respect to the clarity of anatomic structures, Ektavision film, with its higher speed and higher contrast, proved superior to Super HR-S film.
Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Chiba, Japan.
M
M
Wakoh
A G
AG
Farman
H
H
Kitagawa
K
K
Nishikawa
K
K
Kuroyanagi
D015502:Absorptiometry, Photon; D006801:Humans; D008334:Mandible / Q000000981:diagnostic imaging; D008443:Maxillary Sinus / Q000000981:diagnostic imaging; D015588:Observer Variation; D011856:Radiographic Image Enhancement; D011862:Radiography, Panoramic / Q000295:instrumentation; D013704:Temporomandibular Joint / Q000000981:diagnostic imaging; D014962:X-Ray Film; D014963:X-Ray Intensifying Screens