T2 mapping与DWI成像技术在诊断髌软骨损伤中的应用

doi:10.7517/issn.1674-0475.220105

摘要/Abstract

摘要： 本文探究T2 mapping与弥散加权成像（DWI）成像技术在髌软骨损伤诊断中的应用价值及与损伤分级的相关性。选取55例髌软骨损伤患者作为研究对象，均行髌软骨T2 mapping、DWI检查，测量髌软骨损伤区与对照区T2值、表观弥散系数（ADC）值。髌软骨损伤区T2值、ADC值高于对照区（P<0.05）；髌软骨损伤区T2值与ADC值呈正相关（r=0.713，P<0.001）；T2值、ADC值诊断髌软骨损伤的曲线下面积（AUC）分别为0.832、0.761，截断值分别为40.73 ms、17.13×10^-4 mm²/s，联合诊断的AUC为0.931，敏感度为85.45%，特异度为85.45%，明显高于两者单独诊断；髌软骨损伤区T2值、ADC值与髌软骨损伤分级显著相关。提示T2 mapping与DWI联合诊断髌软骨损伤、评估损伤程度价值可靠。

关键词: 磁共振, T2 mapping, 弥散加权成像, 髌软骨损伤, 损伤分级

Abstract: This paper explored the application value of T2 mapping and diffusion-weighted imaging (DWI) imaging technology in the diagnosis of patellar cartilage injury and its correlation with injury grading. Fifty-five patients with patellar cartilage injury were selected as the research subjects. All of them underwent T2 mapping and DWI examination of the patellar cartilage, and measured the T2 and ADC value of patellar cartilage injury area and the control area. The T2 value and ADC value in the patellar cartilage injury area were higher than those in the control area (P<0.05), the T2 value and ADC value in the patellar cartilage injury area were positively correlated (r=0.713, P<0.001). The areas under the curve (AUC) through T2 value and ADC value diagnosis of patellar cartilage injury were 0.832 and 0.761, respectively, and the cut-off values were 40.73 ms and 17.13×10^-4 mm²/s, respectively. The AUC of the combined diagnosis was 0.931, the sensitivity was 85.45%, and the specificity was 85.45%, which was significantly higher than the two alone. The T2 value and ADC value of the patellar cartilage injury area were significantly correlated with the patellar cartilage injury grade. It suggested that the combination of T2 mapping and DWI was reliable in diagnosing patellar cartilage injury and evaluating the degree of injury.

Key words: magnetic resonance, T2 mapping, diffusion weighted imaging, patella cartilage injury, injury grading

李春意, 李春艳. T2 mapping与DWI成像技术在诊断髌软骨损伤中的应用[J]. 影像科学与光化学, 2022, 40(4): 752-756.

LI Chunyi, LI Chunyan. Application of T2 Mapping and DWI Imaging Technology in the Diagnosis of Patellar Cartilage Injury[J]. IMAGING SCIENCE AND PHOTOCHEMISTRY, 2022, 40(4): 752-756.

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