| 高小玲,宋少辉,韩瑞,辛琳,彭红芬,张东友.踝关节MR三维序列成像[J].中国医学影像技术,2015,31(7):1106~1109 |
| 踝关节MR三维序列成像 |
| MR three-dimensional imaging of ankle joint |
| 投稿时间：2014-12-09 修订日期：2015-05-16 |
| DOI：10.13929/j.1003-3289.2015.07.039 |
| 中文关键词: 踝关节 磁共振成像 成像,三维 |
| 英文关键词:Ankle joint Magnetic resonance imaging Imaging, three-dimensional |
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| 摘要点击次数: 2066 |
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| 中文摘要: |
| 目的 比较MR三维稳态采集快速成像序列(3D-FIESTA)、三维扰相梯度回波序列(3D-FS-SPGR)和三维快速自旋回波脉冲序列(3D-FSE-CUBE)对踝关节的显示情况。方法 对51例(共59侧)足踝疼痛患者行3.0T MR检查,扫描序列为常规SE T1WI,FSE T2WI序列,以及三维容积采集序列、包括3D-FIESTA, 3D-FS-SPGR和3D-FSE-CUBE。扫描完成后对所有三维序列进行重建,测量并比较各序列踝关节图像上,软骨、软骨下骨、肌肉及滑膜液的SNR及CNR。结果 ①3D-FIESTA, 3D-FS-SPGR和3D-FSE-CUBE序列均可对踝关节进行任意方位重建,踝关节肌腱及韧带显示良好。②SNR:软骨SNR在3D-FS-SPGR 序列中最高,其次为3D-FIESTA,二者差异无统计学意义(P=0.719);软骨下骨SNR在3D-FIESTA序列中最高,3D-FS-SPGR和3D-FSE-CUBE序列的差异无统计学意义(P=0.424);滑膜液SNR在3D-FIESTA序列中最高,但与3D-FSE-CUBE序列的差异无统计学意义(P=0.98);肌肉两两序列分别进行比较,差异均有统计学意义(P均<0.05)。③CNR:3D-FIESTA序列中软骨/软骨下骨CNR最高,其次为3D-FS-SPGR,软骨/滑液、肌肉/滑液在3D-FIESTA和3D-FSE-CUBE序列中较高,二者差异均无统计学意义(P均>0.05)。结论 3D-FS-SPGR及3D-FIESTA具有较高的软骨SNR及与相邻组织间CNR,是评估踝关节复杂解剖结构的理想方法。 |
| 英文摘要: |
| Objective To compare three-dimensional fast imaging employing steady-state acquisition (3D-FISTEA), three-dimensional spoiled gradient-recalled acquisition in the steady state (3D-FS-SPGR) and three dimensional fast spin-echo pulse sequence with parallel imaging and extended echo train acquisition (3D-FSE-CUBE) for the ankle. Methods MRI was performed in 59 ankles of 51 patients by a 3.0T MRI equipment, and the scanning sequence included SE T1WI, FSE T2WI and three-dimensional sequences (3D-FISTEA, 3D-FS-SPGR and 3D-FSE-CUBE), And then the image data were reconstructed. The SNR of cartilage, bone, muscle, fluid and CNR of cartilage-bone, cartilage-fluid, muscle-fluid on all three dimensional sequence images were calculated and compared. Results ①3D-FIESTA, 3D-FS-SPGR and 3D-FSE-CUBE were ideal for imaging muscle tendon and ligament of ankle due to the ability of reconstruction in arbitrary planes. ②SNR: SNRs of the cartilage was similar for 3D-SPGR and 3D-FIESTA (P=0.719), and both of them were higher than that of 3D-FSE-CUBE (P<0.05). The SNRs of bone on 3D-FIESTA images was the maximum, no significant difference of bone SNR between 3D-FS-SPGR and 3D-FSE-CUBE was observed (P=0.424), the SNRs of fluid was significant higher on 3D-FIESTA and 3D-FSE-CUBE images than that on 3D-FS-SPGR images, respectively. There was no significant difference between 3D-FIESTA and 3D-FSE-CUBE images (P=0.98). The SNRs of muscle between any two sequences was statistically different (all P<0.05). ③CNR: CNR of cartilage-bone was most pronounced for 3D-FIESTA, and in a less way for 3D-FS-SPGR. CNR of cartilage-fluid and muscle-fluid on 3D-FIESTA and 3D-FSE-CUBE images was higher than that on 3D-FS-SPGR images, but it showed no significant difference between any two sequences. Conclusion 3D-FS-SPGR and 3D-FIESTA sequences yield higher SNRs of cartilage and better CNRS between adjacent tissues, making them ideal for evaluating the complex anatomy of the ankle joint. |
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