A simplified method to obtain perceptibility curves for direct dental digital radiography.
OBJECTIVE
To derive and test a simplified method to construct Perceptibility Curves (PCs) for dental digital detectors.


METHODS
Mathematical expressions were derived to make it possible to construct PCs from viewer data obtained at two exposures, one low and one high. PCs were constructed applying these expressions and compared with data previously obtained employing the conventional method.


RESULTS
PCs constructed according to the simplified method agree extremely well with conventionally obtained data.


CONCLUSIONS
Reliable PCs may be constructed according to the simplified method.
Stamatakis
H C
HC
Department of Oral Radiology, Karolinska Institutet, Stockholm, Sweden.
Yoshiura
K
K
Shi
X Q
XQ
Welander
U
U
McDavid
W D
WD
D006801:Humans; D008433:Mathematics; D015588:Observer Variation; D011856:Radiographic Image Enhancement / Q000295:instrumentation; D019252:Radiography, Dental, Digital / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results