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Reports outline radiography study results from Seoul National University, Dental Research Institute
2009 AUG 4 - (NewsRx.com) -- New research, 'Effect of bit depth and kVp of digital radiography for detection of subtle differences,' is the subject of a report. "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. 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," investigators in Seoul, Korea report. "Ten observers examined all images. 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," wrote M.S. Heo and colleagues, Seoul National University, Dental Research Institute. The researchers concluded: "Regarding the detection of subtle radiographic density differences, 12-bit images and 70 kVp were superior to 8-bit images and 60 kVp." Heo and colleagues published their study in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics (Effect of bit depth and kVp of digital radiography for detection of subtle differences. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics, 2009;108(2):278-83). For additional information, contact M.S. Heo, Seoul National University, Dept. of Oral and Maxillofacial Radiology, BK21 and Dental Research Institute, School of Dentistry, Seoul, Korea. The publisher of the journal Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics can be contacted at: Blackwell Publishing Inc., 350 Main St., Malden, MA 02148, USA. Keywords: Korea, Seoul, Dentistry, Diagnosis, Diagnostics, Endodontics, Oral Medicine, Oral Pathology, Oral Surgery, Radiography, Radiology. This article was prepared by Life Science Weekly editors from staff and other reports. Copyright 2009, Life Science Weekly via NewsRx.com.
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