利用压缩感知加速膝关节疼痛患者常规三维中等加权成像
Accelerating Conventional Three-Dimensional Intermediate-Weighted Imaging of Patients with Knee Pain Using Compressed Sensing
来源期刊：
广州医药
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发布时间：
收稿时间：2026/6/12 2:27:50
阅读量：6
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- 压缩感知 并行采集 中等加权序列 磁共振成像 膝关节疼痛
- Compressed sensing; Sensitivity encoding; Intermediate-weighted sequence; Magnetic resonance imaging; Knee pain
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目的 对比三维中等权重压缩感知并行采集序列（3D IW-CS-SENSE）与常规并行采集序列（3D IW-SENSE）在膝关节磁共振成像中的扫描时间、图像质量及诊断效能。方法 前瞻性采集100例膝关节磁共振影像。对比两组三维序列的定量指标、主观评分以及对损伤分级的准确率。结果 IW-CS-SENSE序列扫描时间显著缩短（122.0 ± 28.0 s vs. 221.0 ± 49.0 s，p<0.001）。IW-CS-SENSE序列信噪比、对比噪声比及显示效果评分均低于IW-SENSE序列（p＜0.001），但IW-CS-SENSE序列的SENSE伪影评分更优（5.00 ± 0.00 vs. 4.59 ± 0.62，p<0.001）。两序列对半月板、韧带及软骨损伤分级的准确率均无统计学差异（p值分别为0.33，0.58和0.15）。 结论 3D IW-CS-SENSE序列可显著缩短扫描时间和消除SENSE伪影，同时保持与4倍加速3D IW-SENSE序列相当的诊断效能。
Objective To compare the imaging times, image quality, and diagnostic performance of three-dimensional (3D) intermediate-weighted compressed sensing sensitivity encoding (IW-CS-SENSE) sequence with conventional 3D IW-SENSE sequence in knee MR imaging. Methods MR images of one hundred knees were obtained prospectively. The quantitative indices, qualitative scores, and grading accuracies between the two 3D sequences were compared. Results Imaging times of IW-CS-SENSE sequences were significantly reduced (122.0 ± 28.0 s vs. 221.0 ± 49.0 s, p < 0.001). The signal-to-noise ratios, contrast-to-noise ratios, and visualization scores of IW-CS-SENSE sequences were significantly lower than IW-SENSE sequences (p < 0.001), while scores of SENSE artefact for IW-CS-SENSE sequences were superior (5.00 ± 0.00 vs. 4.59 ± 0.62, p < 0.001). The accuracies in grading meniscal, ACL, and cartilage tears were comparable between the two sequences (p = 0.33, p = 0.58 and p = 0.15, respectively). Conclusion 3D IW-CS-SENSE sequences can reduce scanning time significantly and eliminate SENSE artefacts, while maintaining the same diagnostic performance as the 4-fold accelerated 3D IW-SENSE sequences.
