Evaluation of application effect of 3D Vane-XD-mDixon sequence in thoracic spine enhanced MRI

doi:10.3969/j.issn.1009-976X.2023.05.006

Abstract

Abstract: Objective To evaluate the application effect of 3D Vane-XD-mDixon sequence in thoracic spine enhanced MRI. Methods Sixty-three patients with suspected thoracic spine diseases are collected to scan 3D-T1WI-mDixon-TSE and 3D-Vane-XD-mDixon sequence after routine thoracic spine MRI. The SNR and CNR of thoracic spine were calculated and measured. The images were scored subjectively with 5-point method to compare the diagnostic value of the two sequences. Results In terms of Objective evalution, the SNR of 3D-Vane-XD-mDixon and T1WI-mDixon-TSE sequences are 258.30（41.63, 1982.67） and 133.05 （18.90,584.34）; CNR are 114.67（22.32,740.17） and 23.44（6.44, 224.77）. SNR and CNR of 3D-Vane-XD-mDixon sequence are higher than those of T1WI-mDixon-TSE sequence（Z=-4.042, P<0.001）;（Z=-4.107, P<0.001）. In terms of subjective evalution, T1WI-mDixon-TSE and 3D-Vane-XD-mDixon images subjective scores are 3.03±0.53, 3.09±0.47; 4.17±0.50, 3.96±0.69, which are consistent between the 2 diagnosticians（kappa=0.723, 0.685>0.61）. Besides, the overall quality score of 3D-Vane-XD-mDixon image is significantly better than that of T1WI-mDixon-images, and the difference is statistically significant （P<0.001）. Conclusion By using 3D-Vane-XD-mDixon sequence can obviously improve the quality of enhanced images of thoracic spine, and provide accurate images information for disease diagnosis.

Key words: thoracic spine, MRI imaging, 3D-Vane-XD-mDixon sequence

摘要： 目的探究3D-VANE-XD-mDixon序列在胸椎增强核磁共振成像（MRI）成像中对图像质量的影响及其应用价值。方法收集临床怀疑胸椎病变患者63例,行常规胸椎MRI后补充3D-T1WI-mDixon-TSE及3D-Vane-XD-mDixon序列。计算并测量两种扫描序列图像的椎体信噪比（SNR）、对比噪声比（CNR）,并采用5分法对图像进行主观评分,比较两个序列对胸椎的诊断价值。结果在客观评分方面,3D-Vane-XD-mDixon序列图像与T1WI-mDixon-TSE序列图像的SNR分别为258.30（41.63,1982.67）,133.05（18.90,584.34）;CNR分别为114.67（22.32,740.17）,23.44（6.44,224.77）。3D-Vane-XD-mDixon序列的SNR、CNR均高于T1WI-mDixon-TSE序列（Z=-4.042,P<0.001;Z=-4.107,P<0.001）。在主观评分方面,2名诊断医师对T1WI-mDixon-TSE和3D-Vane-XD-mDixon图像主观评分分别为3.03±0.53,3.09±0.47;4.17±0.50,3.96±0.69。3D-Vane-XD-mDixon序列（kappa=0.723）与T1WI-mDixon-TSE（kappa=0.685）的一致性均较好（kappa>0.61）,具体表现为3D-Vane-XD-mDixon序列图像的整体质量评分明显优于T1WI-mDixon-TSE序列图像,且差异具有统计学意义（P<0.001）。结论使用3D-Vane-XD-mDixon序列,可明显提高胸椎增强图像质量,为疾病诊断提供精准的图像信息。

关键词: 胸椎, 磁共振成像, 3D-Vane-XD-mDixon序列

CLC Number:

R681.5

XIE Ding-xiang, CHEN Xiao-fang, ZHANG Yin-hong, WU Jia-le, MA Hui, CAI Hua-song, ZHANG Xin-yue. Evaluation of application effect of 3D Vane-XD-mDixon sequence in thoracic spine enhanced MRI[J]. Lingnan Modern Clinics In Surgery, 2023, 23(05): 405-409.

谢定祥, 陈笑芳, 张印宏, 吴嘉乐, 马慧, 蔡华崧, 张馨月. 3D Vane-XD-mDixon序列在胸椎增强MRI中的应用效果评价[J]. 岭南现代临床外科, 2023, 23(05): 405-409.

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