评估一种利用头颅造影预测正体层摄影定位误差的方法。

IF 2.8 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Radiography Pub Date : 2025-09-17 DOI:10.1016/j.radi.2025.103174

S. Imajo , M. Honda , Y. Tanabe

{"title":"评估一种利用头颅造影预测正体层摄影定位误差的方法。","authors":"S. Imajo , M. Honda , Y. Tanabe","doi":"10.1016/j.radi.2025.103174","DOIUrl":null,"url":null,"abstract":"<div><h3>Introduction</h3><div>Various radiographic examinations are used to diagnose diseases and determine treatment plans, and the quality of radiographic images affects diagnostic accuracy. This study assessed the relationship between orthopantomography and cephalometric analysis in predicting positioning errors before orthopantomography.</div></div><div><h3>Methods</h3><div>This study evaluated four human head phantom types and included 300 patients aged ≥18 years who underwent orthopantomography. The correlation between the Frankfort horizontal plane and occlusal plane angles in the orthopantomogram was analyzed. The occlusal plane angle at a Frankfort horizontal plane of 0° was estimated using a linear approximation formula. Frankfort horizontal plane and occlusal plane angles were measured on the cephalograms, and their differences were analyzed for correlation with the occlusal plane angle at a Frankfort horizontal plane of 0° in the corresponding orthopantomograms. The cephalogram’s condylar plane–corpus line angle was also compared with orthopantomogram measurements.</div></div><div><h3>Results</h3><div>Frankfort horizontal and occlusal plane angles demonstrated a strong negative correlation (r < −0.9) in phantom studies and moderate negative correlation (r < −0.4) in clinical orthopantomograms. In the phantoms, the occlusal plane at a Frankfort horizontal of 0° in the orthopantomogram strongly correlated with the difference between the Frankfort horizontal and condylar plane–corpus line angles in the cephalogram.</div></div><div><h3>Conclusion</h3><div>Adjusting patient positioning based on individual skeletal differences and angles may reduce positioning errors and improve image quality. Cephalogram analysis could help determine an appropriate Frankfort plane angle for each patient when acquiring orthopantomograms.</div></div><div><h3>Implications for practice</h3><div>Integrating cephalometric analysis into positioning protocols enhances radiographic accuracy, reduces retakes, and improves diagnostic reliability in clinical positioning. This research could improve image quality by identifying reference indicators for orthopantomography by incorporating data from images other than cephalograms, such as computed tomography and magnetic resonance imaging.</div></div>","PeriodicalId":47416,"journal":{"name":"Radiography","volume":"31 6","pages":"Article 103174"},"PeriodicalIF":2.8000,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluation of a method to predict positioning errors in orthopantomography using cephalography\",\"authors\":\"S. Imajo , M. Honda , Y. Tanabe\",\"doi\":\"10.1016/j.radi.2025.103174\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Introduction</h3><div>Various radiographic examinations are used to diagnose diseases and determine treatment plans, and the quality of radiographic images affects diagnostic accuracy. This study assessed the relationship between orthopantomography and cephalometric analysis in predicting positioning errors before orthopantomography.</div></div><div><h3>Methods</h3><div>This study evaluated four human head phantom types and included 300 patients aged ≥18 years who underwent orthopantomography. The correlation between the Frankfort horizontal plane and occlusal plane angles in the orthopantomogram was analyzed. The occlusal plane angle at a Frankfort horizontal plane of 0° was estimated using a linear approximation formula. Frankfort horizontal plane and occlusal plane angles were measured on the cephalograms, and their differences were analyzed for correlation with the occlusal plane angle at a Frankfort horizontal plane of 0° in the corresponding orthopantomograms. The cephalogram’s condylar plane–corpus line angle was also compared with orthopantomogram measurements.</div></div><div><h3>Results</h3><div>Frankfort horizontal and occlusal plane angles demonstrated a strong negative correlation (r < −0.9) in phantom studies and moderate negative correlation (r < −0.4) in clinical orthopantomograms. In the phantoms, the occlusal plane at a Frankfort horizontal of 0° in the orthopantomogram strongly correlated with the difference between the Frankfort horizontal and condylar plane–corpus line angles in the cephalogram.</div></div><div><h3>Conclusion</h3><div>Adjusting patient positioning based on individual skeletal differences and angles may reduce positioning errors and improve image quality. Cephalogram analysis could help determine an appropriate Frankfort plane angle for each patient when acquiring orthopantomograms.</div></div><div><h3>Implications for practice</h3><div>Integrating cephalometric analysis into positioning protocols enhances radiographic accuracy, reduces retakes, and improves diagnostic reliability in clinical positioning. This research could improve image quality by identifying reference indicators for orthopantomography by incorporating data from images other than cephalograms, such as computed tomography and magnetic resonance imaging.</div></div>\",\"PeriodicalId\":47416,\"journal\":{\"name\":\"Radiography\",\"volume\":\"31 6\",\"pages\":\"Article 103174\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-09-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Radiography\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1078817425003189\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Radiography","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1078817425003189","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}

引用次数: 0

摘要

简介：各种放射检查用于诊断疾病和确定治疗方案，而放射图像的质量影响诊断的准确性。本研究评估了体位断层扫描与头颅测量分析在预测体位断层扫描前定位误差方面的关系。方法：本研究评估了四种人类头部幻影类型，纳入300例年龄≥18岁的患者，并进行了骨正断层扫描。分析了法兰克福水平面与咬合平面角在正体层析成像中的相关性。用线性近似公式估计了法兰克福水平面0°处的咬合平面角。在头像上测量法兰克福水平面角和咬合平面角，并分析它们的差异与对应的正体层摄影中法兰克福水平面0°处咬合平面角的相关性。并与正体层摄影测量结果进行比较。结果：法兰克福水平角和咬合平面角在幻像研究中表现为强负相关（r < -0.9），在临床骨层析成像中表现为中度负相关（r < -0.4）。在幻影中，正体层析成像中法兰克福水平0°处的咬合平面与颅骨成像中法兰克福水平和髁平面-语体线角度的差异有很强的相关性。结论：根据个体骨骼差异和角度调整患者体位可减少定位误差，提高图像质量。在获得骨断层摄影时，脑电图分析可以帮助每位患者确定合适的法兰克福平面角度。实践意义：将头颅测量分析整合到定位方案中，可以提高放射成像的准确性，减少重复拍摄，提高临床定位的诊断可靠性。本研究可以通过结合计算机断层扫描和磁共振成像等脑电图以外的图像数据来确定正骨断层扫描的参考指标，从而提高图像质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Evaluation of a method to predict positioning errors in orthopantomography using cephalography

Introduction

Various radiographic examinations are used to diagnose diseases and determine treatment plans, and the quality of radiographic images affects diagnostic accuracy. This study assessed the relationship between orthopantomography and cephalometric analysis in predicting positioning errors before orthopantomography.

Methods

This study evaluated four human head phantom types and included 300 patients aged ≥18 years who underwent orthopantomography. The correlation between the Frankfort horizontal plane and occlusal plane angles in the orthopantomogram was analyzed. The occlusal plane angle at a Frankfort horizontal plane of 0° was estimated using a linear approximation formula. Frankfort horizontal plane and occlusal plane angles were measured on the cephalograms, and their differences were analyzed for correlation with the occlusal plane angle at a Frankfort horizontal plane of 0° in the corresponding orthopantomograms. The cephalogram’s condylar plane–corpus line angle was also compared with orthopantomogram measurements.

Results

Frankfort horizontal and occlusal plane angles demonstrated a strong negative correlation (r < −0.9) in phantom studies and moderate negative correlation (r < −0.4) in clinical orthopantomograms. In the phantoms, the occlusal plane at a Frankfort horizontal of 0° in the orthopantomogram strongly correlated with the difference between the Frankfort horizontal and condylar plane–corpus line angles in the cephalogram.

Conclusion

Adjusting patient positioning based on individual skeletal differences and angles may reduce positioning errors and improve image quality. Cephalogram analysis could help determine an appropriate Frankfort plane angle for each patient when acquiring orthopantomograms.

Implications for practice

Integrating cephalometric analysis into positioning protocols enhances radiographic accuracy, reduces retakes, and improves diagnostic reliability in clinical positioning. This research could improve image quality by identifying reference indicators for orthopantomography by incorporating data from images other than cephalograms, such as computed tomography and magnetic resonance imaging.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Radiography RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

4.70

自引率

34.60%

发文量

169

审稿时长

63 days

期刊介绍： Radiography is an International, English language, peer-reviewed journal of diagnostic imaging and radiation therapy. Radiography is the official professional journal of the College of Radiographers and is published quarterly. Radiography aims to publish the highest quality material, both clinical and scientific, on all aspects of diagnostic imaging and radiation therapy and oncology.