通过全景模型测量中心射线的方向和角度并预测旋转中心的新方法。

IF 2.9 2区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Dento maxillo facial radiology Pub Date : 2024-11-01 DOI:10.1093/dmfr/twae050
Byung-Ju Joh, Sam-Sun Lee, Han-Gyeol Yeom, Gyu-Dong Jo, Jo-Eun Kim, Kyung-Hoe Huh, Won-Jin Yi, Min-Suk Heo
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引用次数: 0

摘要

研究目的本研究旨在提出并评估一种利用全景模型测量中心射线方向和检测全景射线摄影旋转中心的新方法:为了确定中心射线方向,需要识别并连接全景X光照片中通过同一X坐标的两个点。通过数学计算,测量中心射线与中线形成的角度以及与牙弓形态形成的角度。此外,通过分析以这种方式获得的中心线的连续变化,还可以检测和观察到旋转中心的移动:结果:中心线与中线的夹角呈现出从前向后逐渐减小的趋势。在牙弓形态方面,中心线的角度表现出从前方向后方移动时的增大模式,在第二前磨牙下尖牙区域达到顶峰值,随后持续减小。旋转中心大约从冠突的远外侧开始,然后沿下颌切迹和冠突之间的弧线向中线的前内侧移动:通过使用全景模型,我们成功地获得了中心射线方向,并检测到了全景放射摄影的旋转中心。
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A novel method for measuring the direction and angle of central ray and predicting rotation centre via panorama phantom.

The aim of this study is to propose and evaluate a novel method for measuring the central ray direction and detecting the rotation centre of panoramic radiography using the panorama phantom. To determine the central ray direction, 2 points passing through the same x-coordinate in a panoramic radiograph were identified and connected. The angles formed by the central ray with the midline and the angle to the arch form were measured using mathematical calculations. Further, by analysing the continuous changes in the central ray obtained in this manner, the movement of the rotation centre was detected and visualized. The angle between the central ray and the midline exhibited a progressive decrease from the anterior to the posterior direction. With regards to the arch form, the angle of the central ray exhibited an increasing pattern as it moved from the anterior to the posterior direction, culminating in its peak value at the lower second premolar cusp region, followed by a consistent decrease. The rotation centre approximately started from the distolateral aspect of the coronoid process and then anteromedially moved to the midline in a curved line passing between the mandibular notch and coronoid process. By using the panorama phantom, we successfully obtained the central ray direction and detected the rotation centre of the panoramic radiography.

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来源期刊
CiteScore
5.60
自引率
9.10%
发文量
65
审稿时长
4-8 weeks
期刊介绍: Dentomaxillofacial Radiology (DMFR) is the journal of the International Association of Dentomaxillofacial Radiology (IADMFR) and covers the closely related fields of oral radiology and head and neck imaging. Established in 1972, DMFR is a key resource keeping dentists, radiologists and clinicians and scientists with an interest in Head and Neck imaging abreast of important research and developments in oral and maxillofacial radiology. The DMFR editorial board features a panel of international experts including Editor-in-Chief Professor Ralf Schulze. Our editorial board provide their expertise and guidance in shaping the content and direction of the journal. Quick Facts: - 2015 Impact Factor - 1.919 - Receipt to first decision - average of 3 weeks - Acceptance to online publication - average of 3 weeks - Open access option - ISSN: 0250-832X - eISSN: 1476-542X
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