High-resolution magnetic resonance imaging of teeth and periodontal tissues using a microscopy coil.

IF 1.7 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Imaging Science in Dentistry Pub Date : 2024-09-01 Epub Date: 2024-07-17 DOI:10.5624/isd.20240052
Shinya Kotaki, Hiroshi Watanabe, Junichiro Sakamoto, Ami Kuribayashi, Marino Araragi, Hironori Akiyama, Yoshiko Ariji
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引用次数: 0

Abstract

Purpose: This study aimed to assess the performance of 2-dimensional (2D) imaging with microscopy coils in delineating teeth and periodontal tissues compared with conventional 3-dimensional (3D) imaging on a 3 T magnetic resonance imaging (MRI) unit.

Materials and methods: Twelve healthy participants (4 men and 8 women; mean age: 25.6 years; range: 20-52 years) with no dental symptoms were included. The left mandibular first molars and surrounding periodontal tissues were examined using the following 2 sequences: 2D proton density-weighted (PDw) images and 3D enhanced T1 high-resolution isotropic volume excitation (eTHRIVE) images. Two-dimensional MRI images were taken using a 3 T MRI unit and a 47 mm microscopy coil, while 3D MRI imaging used a 3 T MRI unit and head-neck coil. Oral radiologists assessed dental and periodontal structures using a 4-point Likert scale. Inter- and intra-observer agreement was determined using the weighted kappa coefficient. The Wilcoxon signed-rank test was used to compare 2D-PDw and 3D-eTHRIVE images.

Results: Qualitative analysis showed significantly better visualization scores for 2D-PDw imaging than for 3D-eTHRIVE imaging (Wilcoxon signed-rank test). 2D-PDw images provided improved visibility of the tooth, root dental pulp, periodontal ligament, lamina dura, coronal dental pulp, gingiva, and nutrient tract. Inter-observer reliability ranged from moderate agreement to almost perfect agreement, and intra-observer agreement was in a similar range.

Conclusion: Two-dimensional-PDw images acquired using a 3 T MRI unit and microscopy coil effectively visualized nearly all aspects of teeth and periodontal tissues.

使用显微镜线圈对牙齿和牙周组织进行高分辨率磁共振成像。
目的:本研究旨在评估在 3 T 磁共振成像(MRI)设备上使用显微镜线圈进行的二维(2D)成像与传统的三维(3D)成像在勾画牙齿和牙周组织方面的性能比较:纳入 12 名无牙科症状的健康参与者(4 名男性和 8 名女性;平均年龄:25.6 岁;范围:20-52 岁)。使用以下两种序列对左下颌第一磨牙和周围牙周组织进行检查:二维质子密度加权(PDw)图像和三维增强 T1 高分辨率各向同性容积激发(eTHRIVE)图像。二维核磁共振成像使用 3 T 核磁共振成像设备和 47 毫米显微镜线圈,三维核磁共振成像使用 3 T 核磁共振成像设备和头颈线圈。口腔放射科医生采用李克特 4 点量表对牙齿和牙周结构进行评估。采用加权卡帕系数确定观察者之间和观察者内部的一致性。Wilcoxon 符号秩检验用于比较 2D-PDw 和 3D-eTHRIVE 图像:定性分析显示,2D-PDw 成像的可视化评分明显优于 3D-eTHRIVE 成像(Wilcoxon 符号秩检验)。2D-PDw 成像提高了牙齿、牙根牙髓、牙周韧带、硬膜、冠状牙髓、牙龈和营养道的可见度。观察者之间的可靠性从中度一致到几乎完全一致,观察者内部的一致性也在类似范围内:结论:使用 3 T 磁共振成像设备和显微镜线圈获取的二维-PDw 图像可有效显示牙齿和牙周组织的几乎所有方面。
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
Imaging Science in Dentistry
Imaging Science in Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.90
自引率
11.10%
发文量
42
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