The effects of the film/screen combination on tomographic image quality.
Several film/screen combinations were studied to evaluate their effect on thin-section tomograms of the inner ear. Hypocycloidal images of a head phantom were subjectively ranked for image quality, and contrast, spatial frequency spectra, and Wiener noise spectra were measured. Resolution appears to be significantly improved when medium-speed screens are used instead of fast, unsharp screens; observers could perceive increased detail through the higher noise of the medium-speed screens. The authors conclude that medium-speed screens yield more diagnostic information than fast, unsharp screens in thin-section tomography of the inner ear.
D006801:Humans; D008961:Models, Structural; D011856:Radiographic Image Enhancement / Q000379:methods*; D013701:Temporal Bone / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray / Q000295:instrumentation / Q000379:methods*