Spread asymmetry to differentiate nasopalatine duct cysts from radicular cysts arising in the anterior maxilla on computed tomographic images.

IF 1.6 3区医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

Oral Radiology Pub Date : 2024-10-01 Epub Date: 2024-06-18 DOI:10.1007/s11282-024-00761-7

Haruka Ikeda, Natsuho Takata, Yoshitaka Kise, Kaori Ebata, Mizuho Mori, Chiaki Kuwada, Masako Nishiyama, Yukiko Iwase, Yo Ninagawa, Munetaka Naitoh, Eiichiro Ariji

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引用次数: 0

Abstract

Objective: The aim of this study was to clarify numerical values for differentiating nasopalatine duct cysts (NPDCs) from radicular cysts (RCs) arising in the anterior maxilla on computed tomography (CT) or cone-beam CT (CBCT) images.

Methods: CT or CBCT images of histologically proven NPDCs (n = 30) and RCs (n = 33) beyond the midline of the maxilla were investigated to determine two asymmetry indices on axial images of the maximum lesion area. The lateral asymmetry index was calculated based on two distances from each of the lateral ends of the lesion to the midsagittal plane. The index was defined as the difference between the two distances divided by their sum. The labio-palatal asymmetry index was determined by the distance between the labial and palatal ends of the lesion and the coronal plane passing through the central incisor root apex. The performance of these indices was assessed by receiver operating characteristic (ROC) analysis. The cutoff values for differentiating NPDCs from RCs were determined with the Youden procedure on the ROC curve.

Results: The area under the ROC curve was 0.97 for the lateral asymmetry index and 0.88 for the labio-palatal asymmetry index. The cutoff values for differentiation were 0.36 and 0.68 for the lateral and labio-palatal asymmetry indices, respectively.

Conclusion: The lateral asymmetry index appeared to be an effective reference for differentiating NPDCs from RCs on CT or CBCT images. When the index was less than the cutoff value, a diagnosis of NPDC was strongly suggested.

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通过计算机断层扫描图像上的不对称扩散来区分鼻腭管囊肿和上颌骨前部的根状囊肿。

研究目的本研究旨在明确在计算机断层扫描（CT）或锥束CT（CBCT）图像上区分鼻腭管囊肿（NPDC）和上颌骨前部根状囊肿（RC）的数值：对组织学证实的上颌骨中线以外的NPDCs（n = 30）和RCs（n = 33）的CT或CBCT图像进行研究，以确定最大病变区域轴向图像上的两个不对称指数。侧向不对称指数是根据病变侧端至中矢状面的两个距离计算得出的。该指数定义为两个距离之差除以两个距离之和。唇腭不对称指数是根据病变的唇端和腭端与通过中切牙根尖的冠状面之间的距离确定的。这些指数的性能通过接收器操作特征（ROC）分析进行评估。根据 ROC 曲线上的 Youden 程序确定了区分 NPDC 和 RC 的临界值：侧面不对称指数的 ROC 曲线下面积为 0.97，唇腭不对称指数的 ROC 曲线下面积为 0.88。外侧和唇腭不对称指数的分辨临界值分别为 0.36 和 0.68：结论：侧面不对称指数似乎是在 CT 或 CBCT 图像上区分 NPDC 和 RC 的有效参考。当指数小于临界值时，强烈建议诊断为 NPDC。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Oral Radiology DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

4.20

自引率

13.60%

发文量

审稿时长

>12 weeks

期刊介绍： As the official English-language journal of the Japanese Society for Oral and Maxillofacial Radiology and the Asian Academy of Oral and Maxillofacial Radiology, Oral Radiology is intended to be a forum for international collaboration in head and neck diagnostic imaging and all related fields. Oral Radiology features cutting-edge research papers, review articles, case reports, and technical notes from both the clinical and experimental fields. As membership in the Society is not a prerequisite, contributions are welcome from researchers and clinicians worldwide.