Reference line-pair values of panoramic radiographs using an arch-form phantom stand to assess clinical image quality
최다혜, 최보람, 최진우, 허경회, 이원진, 허민석, 최순철, 이삼선,
소속 상세정보
최다혜 ( Choi Da-Hye ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
최보람 ( Choi Bo-Ram ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
최진우 ( Choi Jin-Woo ) - Dankook University College of Dentistry Department of Oral and Maxillofacial Radiology
허경회 ( Huh Kyung-Hoe ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
이원진 ( Yi Won-Jin ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
허민석 ( Heo Min-Suk ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
최순철 ( Choi Soon-Chul ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
이삼선 ( Lee Sam-Sun ) - Seoul National University School of Dentistry Department of Oral and Maxillofacial Radiology
KMID : 1024020130430010007
Abstract
Purpose: This study was performed to suggest reference line-pair values of panoramic images with clinically desirable qualities using an arch-form phantom stand. Materials and Methods: The line-pair test phantom was chosen. A real skull model was selected for setting the arch-form model of the phantom stand. The phantom stand had slits in four regions (incisor, premolar, molar, TMJ). Four raw images of the test phantom in each region and one raw image of the real skull were converted into 50 test phantom images and 50 skull phantom images with various line-pair values. 50 post-processed real skull phantom images were divided into 4 groups and were randomly submitted to 14 evaluators. Image quality was graded on a 4 point scale (1. good, 2. normal, 3. poor but interpretable, and 4. not interpretable). The reference line pair was determined as the first line-pair value scored less than 2 points. Results: The mean scores tended to decrease as the line-pair values increased. The reference line-pair values were 3.19 LP/mm in the incisor, 2.32 LP/mm in the premolar and TMJ, and 1.88 LP/mm in the molar region. Conclusion: Image quality evaluation methods and criteria should be able to assess various regions considering the characteristics of panoramic systems. This study suggested overall and regional reference line-pair values and established a set of standard values for them.
키워드
Radiography; Panoramic; Quality Assurance; Phantom; Imaging
원문 및 링크아웃 정보
등재저널 정보