The Application of Contrast-Enhanced 3D-STIR-VISTA MR Imaging of the Brachial Plexus.

IF 2 4区 医学 Q4 Medicine Journal of the Belgian Society of Radiology Pub Date : 2022-09-05 eCollection Date: 2022-01-01 DOI:10.5334/jbsr.2803
Dingsheng Han, Yanru Zhou, Lan Zhang, Jiajia Zhang
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Abstract

Objective: To introduce contrast-enhanced 3D-STIR-VISTA sequence that would improve the image quality for the brachial plexus imaging and enhance the contrast between the brachial plexus and surrounding tissues.

Methods: Thirty subjects (average age, 47.33 ± 15.15 years; 22 males and 8 females) were enrolled, including 7 patients with brachial plexus injuries, 4 patients with schwannomas, 1 patient with neurofibroma, 1 patient with thoracic outlet syndrome, 1 patient with metastasis, 1 patient with brachial plexus neuritis, and 15 patients without abnormal findings. Scores of unenhanced and contrast-enhanced 3D-STIR-VISTA images using a 5-point scale were compared by Wilcoxon's signed-rank test. The signal intensity (SI), signal to noise ratio (SNR), contrast to noise ratio (CNR) and contrast ratio (CR) between 3D-STIR-VISTA images without and with contrast agent were compared by the paired Student t-test.

Results: The SNRs of the brachial plexus between 3D-STIR-VISTA without and with contrast agent were not significantly different, while SNRs of surrounding tissues were significantly decreased with contrast agent. The CNRs of 3D-STIR-VISTA images with contrast agent were significantly higher than that without contrast agent. The 3D-STIR-VISTA sequence with contrast agent exhibited a statistically higher CR than that without contrast agent. The average score for 3D-STIR-VISTA images with contrast agent was significantly higher than that without contrast agent.

Conclusion: The 3D-STIR-VISTA sequence with contrast agent is qualitatively and quantitatively superior to that without a contrast agent. The contrast-enhanced 3D-STIR-VISTA sequence can provide distinct visualization of the brachial plexus and enhance the contrast between the brachial plexus and surrounding tissues.

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对比增强3D-STIR-VISTA在臂丛磁共振成像中的应用。
目的:介绍增强3D-STIR-VISTA序列,提高臂丛成像的图像质量,增强臂丛与周围组织的对比度。方法:30例受试者,平均年龄47.33±15.15岁;其中臂丛神经损伤患者7例,神经鞘瘤患者4例,神经纤维瘤患者1例,胸廓出口综合征患者1例,转移患者1例,臂丛神经炎患者1例,无异常患者15例。使用5分制比较未增强和对比度增强的3D-STIR-VISTA图像的分数,采用Wilcoxon's signed-rank检验。采用配对学生t检验比较未添加和添加造影剂的3D-STIR-VISTA图像的信号强度(SI)、信噪比(SNR)、噪比(CNR)和对比度(CR)。结果:3D-STIR-VISTA未加对比剂与加对比剂前后臂丛的信噪比无显著差异,而加对比剂后臂丛周围组织的信噪比明显降低。添加造影剂后3D-STIR-VISTA图像的cnr明显高于未添加造影剂的图像。有造影剂的3D-STIR-VISTA序列比没有造影剂的CR有统计学意义上更高。使用造影剂的3D-STIR-VISTA图像的平均评分明显高于未使用造影剂的3D-STIR-VISTA图像。结论:有造影剂的3D-STIR-VISTA序列在定性和定量上均优于未加造影剂的3D-STIR-VISTA序列。增强3D-STIR-VISTA序列能清晰显示臂丛,增强臂丛与周围组织的对比。
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来源期刊
Journal of the Belgian Society of Radiology
Journal of the Belgian Society of Radiology Medicine-Radiology, Nuclear Medicine and Imaging
CiteScore
0.60
自引率
5.00%
发文量
0
审稿时长
6-12 weeks
期刊介绍: The purpose of the Journal of the Belgian Society of Radiology is the publication of articles dealing with diagnostic and interventional radiology, related imaging techniques, allied sciences, and continuing education.
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