Articular cartilage of the knee: Rapid three-dimensional MR imaging at 3.0 T with IDEAL balanced steady-State free precession - Initial experience
Articular cartilage of the knee: Rapid three-dimensional MR imaging at 3.0 T with IDEAL balanced steady-State free precession - Initial experience
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DOI：
10.1148/radiol.2402050288
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发表时间：
2006-08-01
期刊：
影响因子：
19.7
通讯作者：
Brittain, Jean H.
中科院分区：
文献类型：
--
作者：
Gold, Garry E.;Reeder, Scott B.;Brittain, Jean H.
本研究获得了机构审查委员会的批准和知情同意。在这项研究中，水和脂肪的迭代分解与回波不对称和最小二乘估计（IDEAL）平衡稳态自由进动（bSSFP），脂肪抑制bSSFP，和脂肪抑制破坏梯度回波（GRE）序列的关节膝关节软骨的3.0 T磁共振（MR）成像进行了前瞻性比较，在5名健康志愿者。比较了软骨和液体信噪比（SNR）、软骨-液体对比度噪声比（CNR）、SNR效率、CNR效率、图像质量和脂肪抑制。脂肪抑制bSSFP和IDEAL bSSFP具有比GRE更高的软骨SNR效率（P <0.01）。IDEAL bSSFP的软骨液CNR效率高于脂肪抑制bSSFP或GRE（P <0.01）。脂肪抑制bSSFP和IDEAL bSSFP的图像质量高于GRE（P <0.01）。GRE和IDEAL bSSFP的脂水分离或脂肪饱和度显著优于脂肪抑制bSSFP（P <0.05）。IDEAL bSSFP是一种很有前途的膝关节软骨成像方法。
Institutional review board approval and informed consent were obtained for this HIPAA-compliant study. In this study, iterative decomposition of water and fat with echo asymmetry and least-squares estimation ( IDEAL) balanced steady-state free precession (bSSFP), fat-suppressed bSSFP, and fat-suppressed spoiled gradient-echo (GRE) sequences for 3.0-T magnetic resonance (MR) imaging of articular knee cartilage were prospectively compared in five healthy volunteers. Cartilage and fluid signal-to-noise ratio (SNR), cartilage-fluid contrast-to-noise ratio (CNR), SNR efficiency, CNR efficiency, image quality, and fat suppression were compared. Fat-suppressed bSSFP and IDEAL bSSFP had higher SNR efficiency of cartilage (P < .01) than did GRE. IDEAL bSSFP had higher cartilage-fluid CNR efficiency than did fat-suppressed bSSFP or GRE (P < .01). Fat-suppressed bSSFP and IDEAL bSSFP had higher image quality than did GRE ( P < .01). GRE and IDEAL bSSFP had significantly better fat-water separation or fat saturation than did fat-suppressed bSSFP ( P < .05). IDEAL bSSFP is a promising method for imaging articular knee cartilage.