A study on the geometric correction for the digital subtraction radiograph.
- Author:
Suk Young LIM
1
;
Kwang Joon KOH
Author Information
1. Department of Oral and Maxillofacial Radiology, School of Dentistry, Chonbuk National University, Korea. radkoh@moak.chonbuk.ac.kr
- Publication Type:Original Article
- Keywords:
geometric correction;
subtraction radiograph
- MeSH:
Bicuspid;
Humans;
Mandible;
Molar;
Noise;
Radiography, Dental, Digital
- From:Korean Journal of Oral and Maxillofacial Radiology
2001;31(1):23-34
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To develop a new subtraction program for registering digital periapical images based on the correspon-dence of anatomic structures. MATERIALS AND METHODS: The digital periapical images were obtained by Digora system with Rinn XCP equipment after translation of 1-16 mm, and rotation of 2-20degrees at the premolar and molar areas of the human dried mandible. The new subtraction program, NIH Image program and Emago/Advanced program were compared by the peak-signal-to noise ratio (PSNR). RESULTS: The new subtraction program was superior to NIH Images program and Emago/Advanced program up to 16 mm translation and horizontal angulation up to 4degrees. CONCLUSION: The new subtraction program can be used for subtracting digital periapical images.
