Objectives
The main aim of this study was to evaluate the performance of 10 individual sensors
of the same make, using objective measures of key image quality parameters. A further
aim was to compare 8 brands of sensors.
Study Design
Ten new sensors of 8 different models from 6 manufacturers (i.e., 80 sensors) were
included in the study. All sensors were exposed in a standardized way using an X-ray
tube voltage of 60 kVp and different exposure times. Sensor response, noise, low-contrast
resolution, spatial resolution and uniformity were measured.
Results
Individual differences between sensors of the same brand were surprisingly large in
some cases. There were clear differences in the characteristics of the different brands
of sensors. The largest variations were found for individual sensor response for some
of the brands studied. Also, noise level and low contrast resolution showed large
variations between brands.
Conclusions
Sensors, even of the same brand, vary significantly in their quality. It is thus valuable
to establish action levels for the acceptance of newly delivered sensors and to use
objective image quality control for commissioning purposes and periodic checks to
ensure high performance of individual digital sensors.
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Article info
Publication history
Published online: February 12, 2016
Accepted:
January 23,
2016
Received in revised form:
December 15,
2015
Received:
September 4,
2015
Identification
Copyright
© 2016 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
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- Response to the article “Comparison of the performance of intraoral X-ray sensors using objective image quality assessment”Oral Surgery, Oral Medicine, Oral Pathology and Oral RadiologyVol. 122Issue 6
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