Gahleitner A, Nasel C, Schick S, Bernhart T, Mailath G, Dorffner S, Watzek G, Imhof H, Trattnig S
Abteilung für Osteologie/MR-Institut, Universitätsklinik für Radiodiagnostik.
Rofo. 1998 Oct;169(4):424-8. doi: 10.1055/s-2007-1015311.
To establish a new method for dental imaging using magnetic resonance tomography named Dental-MRT and to demonstrate its usefulness in diagnosing dentogen pathologies of the mandible and maxilla.
Seven healthy volunteers, three patients with pulpitis, two patients with dentigerous cysts, two patients after tooth transplantation, and three patients with atrophic mandibles have been evaluated. Optimized axial T1- and T2-weighted gradient echo and spin echo sequences in 2D and 3D technique have been established to perform studies of the jaws. The acquired images were reconstructed with a standard dental software package on a work-station as panorama and cross-sectional views of the mandible or maxilla.
The entire maxillo-mandibular bone, teeth, dental pulp, and the content of the mandibular canal were well depicted. Patients with pulpitis demonstrate bone marrow edema in the periapical region. Dentigerous cysts and their relation to the surrounding structures are clearly shown. After contrast media administration marked enhancement of the dental pulp can be demonstrated.
Dental-MRT promises to provide a new tool for visualization and detection of dental diseases.
建立一种名为牙科磁共振断层扫描（Dental-MRT）的牙科成像新方法，并证明其在诊断下颌骨和上颌骨牙源性病变中的实用性。
对7名健康志愿者、3名牙髓炎患者、2名含牙囊肿患者、2名牙移植术后患者以及3名下颌骨萎缩患者进行了评估。建立了二维和三维技术中优化的轴向T1加权和T2加权梯度回波以及自旋回波序列，以对颌骨进行研究。采集的图像在工作站上使用标准牙科软件包重建为下颌骨或上颌骨的全景图和横断面图。
整个上颌下颌骨、牙齿、牙髓以及下颌管内容物均显示良好。牙髓炎患者根尖周区域出现骨髓水肿。含牙囊肿及其与周围结构的关系清晰显示。注射造影剂后可显示牙髓明显强化。
牙科磁共振断层扫描有望为牙科疾病的可视化和检测提供一种新工具。
