PMID: 9550045Aug 1, 1997Paper

Direct digital radiography for the detection of periapical bone lesions: a clinical study

Endodontics & Dental Traumatology
B KullendorffM Rohlin

Abstract

The aim was to compare the observer performance of direct digital radiography, with and without image processing, with that of conventional radiography, for the detection of periapical bone lesions. For 50 patients, a conventional periapical radiograph using E-speed film was taken. Then, a direct digital image of the same area was made. The images presenting the periapical bone tissue of 59 roots were assessed by seven observers using a 5-point confidence scale. The digital images were first presented as original images, with default contrast and brightness set by the computer system. Following this, the observers were allowed to use the processing facilities for greyscale treatment. The results for original and processed direct digital images and for conventional radiographs were compared by Receiver Operating Characteristic (ROC) analysis. The area under the ROC curve, calculated as P(A) value, was 0.88 for conventional film, 0.82 for original digital images and 0.78 for processed images. Corresponding Az values were slightly higher, 0.89, 0.84 and 0.81. Statistically significant differences between ROC areas calculated as P(A) values for the methods were found. Comparison between Az values showed no significant differences b...Continue Reading

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Citations

Jul 18, 2001·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·J A WallaceS F Kapa
Sep 12, 2001·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·G JonassonS Kiliaridis
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Dec 24, 2010·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Mohammad A Al-OmariFareed Haddad
Aug 24, 2010·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Namita RaghavAtul Kaushik
Sep 26, 2009·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Grethe JonassonMagnus Hakeberg
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