Wireless amplified nuclear MR detector in high-resolution MR imaging of temporomandibular joint
10.13929/j.issn.1003-3289.2020.07.034
- VernacularTitle: 无线整合型MR放大器用于颞下颌关节高分辨MR成像
- Author:
Chong TIAN
1
Author Information
1. Department of Radiology, Guizhou Provincial People's Hospital
- Publication Type:Journal Article
- Keywords:
Magnetic resonance imaging;
Quality control;
Temporomandibular joint;
Wireless amplified nuclear MR detector
- From:
Chinese Journal of Medical Imaging Technology
2020;36(7):1075-1079
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To observe the application value of wireless amplified nuclear MR detector (WAND) in high-resolution MR imaging of temporomandibular joint (TMJ). Methods: Totally 16 healthy youths underwent bilateral TMJ MR scanning using head-neck combined coil and WAND coupled head-neck combined coil respectively. The anterior band, intermediate band, posterior band, anterior attachment, posterior attachment and double plate area, articular cavity, condylar bone of TMJ on the images obtained with 2 methods were observed and subjectively evaluated. The image quality of the articular disc, whose signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were evaluated for objective evaluation. The subjective scoring and objective evaluation were compared between 2 groups. Results: A total of 15 subjects were included. Compared with images obtained with head-neck combined coil, images obtained with WAND coupled head-neck combined coil had obvious advantages in displaying the disc of anterior, middle and posterior, anterior attachment, posterior attachment, double-plate area and joint cavity and condyle bone of TMJ (all P<0.05), also had significantly higher CNR and SNR of the articular disc and posterior tissue of TMJ (both P<0.05). Conclusion: WAND coupled head-neck combined coil can improve MR image quality of TMJ.
