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Effect of bit depth and kVp of digital radiography for detection of subtle differences

Cited 12 time in Web of Science Cited 15 time in Scopus
Authors
Heo, Min-Suk; Choi, Da-Hye; Benavides, Erika; Huh, Kyung-Hoe; Yi, Won-Jin; Lee, Sam-Sun; Choi, Soon-Chul
Issue Date
2009-08
Publisher
Mosby
Citation
Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2009;108:278-283
Abstract
Objectives
The purpose of this study is to investigate the effects of different bit depths and kilovoltage peak (kVp) values used in intraoral digital radiography on observer performance in detecting subtle radiographic density differences.

Study design
Using an intraoral CCD sensor set at 8- or 12-bit depth, kVp set at 60 or 70, and 14 different exposure times, digital radiographs were acquired of a specially designed aluminum step-wedge phantom with small holes of different depths in each step. Ten observers examined all images.

Results
The observers counted more holes with the 12-bit images compared with the 8-bit images, particularly at 60 kVp. Significantly more holes were also counted with images taken at 70 kVp compared with those taken at 60 kVp.

Conclusion
Regarding the detection of subtle radiographic density differences, 12-bit images and 70 kVp were superior to 8-bit images and 60 kVp
ISSN
1079-2104
Language
English
URI
https://hdl.handle.net/10371/62164
DOI
https://doi.org/10.1016/j.tripleo.2008.12.053
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Appears in Collections:
College of Dentistry/School of Dentistry (치과대학/치의학대학원)Dept. of Dentistry (치의학과)Journal Papers (저널논문_치의학과)
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