磁共振3D-DEDIC-T_2 2D-FSE-PD序列膝关节软骨成像的比较研究
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摘要
目的比较三维多回波数据联合序列(3D-DEDIC-T_2)以及二维快速自旋回波质子像序列(2D-FSE-PD)对膝关节软骨的成像质量。方法 40例健康志愿者和20例患者在1.5T MR上行3D-DEDIC-T_2和2D-FSE-PD序列成像。比较两序列软骨信噪比(SNR)、损伤诊断符合率。结果 2D-FSE-PD序列与3D-DEDIC-T_2软骨信噪比(SNR)比较差异有统计学意义(P<0.01);对膝关节软骨损伤的诊断符合率比较差异有统计学意义(P<0.01)。结论与2D-FSE-PD序列相比,3D-DEDIC-T_2序列能更好地显示膝关节软骨结构和损伤。
引文
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[3]FRIDERICH K M,REITER G,KAISER B,et al.High-resolution cartilageimaging of the knee at 3T:basic evalustion of modern isotropic3D MR-sequences[J].Eur J Radiol,2011,78(2):398-405.
[4]SCHAEFER F K,KURZ B,SCHAEFER P J,et al.Accuracy and precisionin the detection of articular cartilage lesions using magneticresonance imaging at 1.5 Tesla in an in vitro study with orthopedicand histopathologic correlation[J].Acta Radiol,2007,48(10):1131-1137.
[5]LANGER J E,MEYER S J,DALINKA M.Imaging of the knee[J].RadiolC lin North Am,1990,28(5):975-980.
[6]徐寿良,俞逵仑,史新平,等.膝关节软骨MR成像的技术探讨[J].实用放射学杂志,2005,21(10):1094-1096.
[7]赵涛,翁磊,尤玉华,等.膝关节外伤性骨软骨骨折的X线和MRI表现[J].中华放射学杂志,2003,37(11):985-988.
[8]REGATTERR,AKELLAS V,REDDYR.Depth-dependentprotonmagne tization transfer in articularcartilage[J].J Magn Reson Imaging,2005,22(2):318-323.
[9]MLYNARIK,SZOMOLANYIP,TOFFANINR,et al.Transverse relaxation mechanisms in articular cartilage[J].J Magn Reson,2004,169:300.