利用垂直双重曝光减少全景x线摄影中的颈椎鬼影。

IF 1.9 4区 医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
Journal of oral science Pub Date : 2024-01-16 Epub Date: 2023-11-30 DOI:10.2334/josnusd.23-0298
Masao Kato, Shoichi Asakura, Hideaki Kimoto, Tatsuhiko Sasaki, Ko Dezawa, Toshihiko Amemiya, Kunihito Matsumoto, Yoshinori Arai
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引用次数: 0

摘要

目的:评价垂直双曝光全景x线摄影(PR)的图像质量,该技术将两幅不同焦距的PR图像合并,以减少切牙区域颈椎(CV)和椎间隙(IVS)的鬼影。方法:在0 mm处拍摄铝块、CV模体和人头模体的PR图像,与其他高度(0、5、10、15、20 mm)的PR图像进行合并和相减,形成Merg0 + 15 mm和Sub0 - 10 mm等新图像。根据直线轮廓上的均匀性对减影后的图像进行主观分析。合并后的图像由六名评分员进行主观评价,以确定幽灵图像的影响。结果:客观评价显示,在鬼图像位置移位根据高度的焦点,两个幽灵。主观评价中,正常PR (Merg0 + 0 mm)得分最差,CV和IVS鬼影影响较大。结论:垂直双曝光PR法将正常位置的PR图像与较高的x线聚焦相融合,可以减少切牙区域CV和IVS的鬼影。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reduction of cervical vertebra ghost images in panoramic radiography using vertical dual exposure.

Purpose: To evaluate the image quality of vertical dual-exposure panoramic radiography (PR), which merges two PR images taken at different focus heights to reduce ghost images of cervical vertebrae (CV) and intervertebral spaces (IVS) in the incisor region.

Methods: PR images of an aluminum block, a CV phantom and a human head phantom were taken at 0 mm and merged with and subtracted from PR images taken at other heights (0, 5, 10, 15, and 20 mm) to create new images, e.g., Merg0 + 15 mm and Sub0 - 10 mm. The subtracted images were analyzed subjectively according to the uniformity on the line profile. Merged images were evaluated subjectively by six raters to determine the influence of the ghost images.

Results: Objective evaluation revealed a positional shift in the ghost images according to the height of the focus for both phantoms. In the subjective evaluation, the normal PR (Merg0 + 0 mm) showed the worst score, indicating strong influence of CV and IVS ghost images.

Conclusion: The vertical dual-exposure PR method, which merges PR images taken at the normal position and a higher X-ray focus, can reduce CV and IVS ghost images in the incisor region.

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来源期刊
Journal of oral science
Journal of oral science DENTISTRY, ORAL SURGERY & MEDICINE-MATERIALS SCIENCE, BIOMATERIALS
CiteScore
3.80
自引率
0.00%
发文量
58
期刊介绍: Information not localized
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