Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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A study on the geometric correction for the digital subtraction radiograph

디지털 공제방사선영상의 기하학적 보정에 관한 연구

  • Lim Suk-Young (Department of Oral and Maxillofacial Radiology, School of Dentistry, and Institute of Oral Rio Science, Chonbuk National University) ;
  • Koh Kwang-Joon (Department of Oral and Maxillofacial Radiology, School of Dentistry, and Institute of Oral Rio Science, Chonbuk National University)
  • 임숙영 (전북대학교 치과대학 구강악안면방사선학교실 및 구강생체과학연구소) ;
  • 고광준 (전북대학교 치과대학 구강악안면방사선학교실 및 구강생체과학연구소)
  • Published : 2001.03.01
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Abstract

Purpose : To develop a new subtraction program for registering digital periapical images based on the correspondence 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 2-20° 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 Emagol Advanced program up to 16 mm translation and horizontal angulation up to 4°. Conclusion: The new subtraction program can be used for subtracting digital periapical images.

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