| 杨琼,郑卓肇.DESS、MEDIC、TrueFISP磁共振扫描序列对膝关节软骨成像的比较[J].中国医学影像技术,2010,26(3):535~537 |
| DESS、MEDIC、TrueFISP磁共振扫描序列对膝关节软骨成像的比较 |
| Comparison of MR DESS, MEDIC, TrueFISP sequences for knee cartilage |
| 投稿时间：2009-06-24 修订日期：2009-08-16 |
| DOI： |
| 中文关键词: 软骨 磁共振成像 比较研究 |
| 英文关键词:Cartilage Magnetic resonance imaging Comparative study |
| 基金项目: |
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| 摘要点击次数: 2483 |
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| 中文摘要: |
| 目的 评价不同MR序列对膝关节软骨成像质量及软骨病变的诊断价值。 方法 对18名健康志愿者进行膝关节MR扫描,所用序列包括:稳态双回波(DESS)、多回波数据联合序列(MEDIC)以及真实稳态进动快速成像(TrueFISP)。扫描之后进行关节软骨的信噪比(SNR)及与周围结构的对比噪声比(CNR)的测量及比较。 结果 各序列SNR值间比较,MEDIC序列显著高于DESS和TrueFISP序列,DESS序列的软骨SNR虽然不如MEDIC序列高,但软骨-关节滑液CNR较高。 结论 DESS序列是相对较为优化的软骨MR序列。 |
| 英文摘要: |
| Objective To evaluate the imaging quality and diagnostic value of different MR sequences for abnormalities of knee cartilage. Methods Three sequences of MR, including double echo steady state (DESS), multi echo data imagine combination (MEDIC) and true fast imaging with steady state precession (TrueFISP) were performed in 18 healthy volunteers. Signal-to-noise ratio (SNR) of knee cartilage and contrast-to-noise ratio (CNR) to surrounding tissues were measured and compared. Results SNR of cartilage was the highest in MEDIC sequence imaging, CNR of cartilage-synovia was the highest in DESS sequence imaging among three sequences (P<0.05). Conclusion Compared with the other sequences, DESS seems to be optimal in diagnosis of abnormalities in knee cartilage. |
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