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ROI-based image registration for digital subtraction radiography

Cited 14 time in Web of Science Cited 14 time in Scopus
Authors

Choi, Soon-Chul; Yi, Won-Jin; Heo, Min-Suk; Lee, Sam-Sun; Huh, Kyung-Hoe

Issue Date
2006-04
Publisher
Elsevier
Citation
Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;101:523-529.
Abstract
Objective
We evaluated the influence of surrounding anatomical structures on the registration accuracy of a diagnostically important region, by varying the ROI (region of interest) window used in an automatic ROI-based digital subtraction method.

Study design
Pairs of radiographs were taken at 2 molar regions using paralleling techniques of XCP devices (Rinn Co., Elgin, Ill) attached with and without a bite block. The global and local registration accuracies were measured by the RMS (root mean square) of subtraction images for various ROIs.

Results
No significant differences were found in global registration accuracies among various ROI sizes in all the paralleling techniques. The local registration accuracies decreased with extension of the ROI size.

Conclusion
Registration using an ROI restricted to the anatomical region of diagnostic interest provides higher accuracy than using a larger ROI.
ISSN
1079-2104
Language
English
URI
https://hdl.handle.net/10371/69693
DOI
https://doi.org/10.1016/j.tripleo.2005.04.012
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