Improved fat suppression using multipeak reconstruction for IDEAL chemical shift fat-water separation: application with fast spin echo imaging.
Improved fat suppression using multipeak reconstruction for IDEAL chemical shift fat-water separation: application with fast spin echo imaging.
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DOI：
10.1002/jmri.21664
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发表时间：
2009-02
影响因子：
4.4
通讯作者：
Reeder, Scott B.
中科院分区：
文献类型：
--
作者：
Kijowski, Richard;Woods, Michael A.;Lee, Kenneth S.;Takimi, Kuya;Yu, Huanzhou;Shimakawa, Ann;Brittain, Jean H.;Reeder, Scott B.
使用多峰脂肪光谱模型和理想的脂肪-水分离，评估和量化膝关节快速自旋回波成像中脂肪抑制质量的改善。对5名无症状志愿者的10个膝关节进行了T1W和T2W快速自旋回波序列扫描，采用理想的脂肪水分离和两种频率选择性脂肪饱和方法(脂肪选择性饱和和脂肪选择性部分反转)。使用传统的单峰法和预校准和自校准多峰方法重建理想的图像，这些方法可以更准确地模拟脂肪的核磁共振谱。测量所有序列在不同组织中的信噪比(SNR)。使用学生t检验比较SNR值。对于T1加权和T2加权快速自旋回波序列，预校准和自校准多峰理想对皮下脂肪和骨髓中信号的抑制显著大于脂肪选择性饱和、脂肪选择性部分反转和单峰理想。对于T1加权快速自旋回波序列，多峰理想对皮下脂肪和骨髓内信号抑制的改善范围在与脂肪选择性部分反转相比65%到与脂肪选择性饱和相比86%之间。对于T2加权快速自旋回波序列，与脂肪选择性部分反转相比，多峰理想序列的改善幅度在21%到脂肪选择性饱和时的81%之间。与单峰理想和两种广泛使用的频率选择脂肪饱和方法相比，多峰理想脂肪-水分离为膝关节的T1加权和T2加权快速自旋回波成像提供了更好的脂肪抑制。
To evaluate and quantify improvements in the quality of fat suppression for fast spin-echo imaging of the knee using multipeak fat spectral modeling and IDEAL fat-water separation. T1-weighted and T2-weighted fast spin-echo sequences with IDEAL fat-water separation and two frequency-selective fat-saturation methods (fat-selective saturation and fat-selective partial inversion) were performed on 10 knees of five asymptomatic volunteers. The IDEAL images were reconstructed using a conventional single-peak method and precalibrated and self-calibrated multipeak methods that more accurately model the NMR spectrum of fat. The signal-to-noise ratio (SNR) was measured in various tissues for all sequences. Student t-tests were used to compare SNR values. Precalibrated and self-calibrated multipeak IDEAL had significantly greater suppression of signal (P < 0.05) within subcutaneous fat and bone marrow than fat-selective saturation, fat-selective partial inversion, and single-peak IDEAL for both T1-weighted and T2-weighted fast spin-echo sequences. For T1-weighted fast spin-echo sequences, the improvement in the suppression of signal within subcutaneous fat and bone marrow for multipeak IDEAL ranged between 65% when compared to fat-selective partial inversion to 86% when compared to fat-selective-saturation. For T2-weighted fast spin-echo sequences, the improvement for multipeak IDEAL ranged between 21% when compared to fat-selective partial inversion to 81% when compared to fat-selective saturation. Multipeak IDEAL fat-water separation provides improved fat suppression for T1-weighted and T2-weighted fast spin-echo imaging of the knee when compared to single-peak IDEAL and two widely used frequency-selected fat-saturation methods.
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影响因子：
3.3
作者：
MEYER, CH;PAULY, JM;NISHIMURA, DG
通讯作者：
NISHIMURA, DG
影响因子：
3.3
作者：
Pineda, AR;Reeder, SB;Pelc, NJ
通讯作者：
Pelc, NJ
影响因子：
19.7
作者：
Hauger, O;Dumont, E;Diard, F
通讯作者：
Diard, F
影响因子：
3.3
作者：
Reeder, SB;Pineda, AR;Pelc, NJ
通讯作者：
Pelc, NJ
影响因子：
5
作者：
Krinsky, G;Rofsky, NM;Weinreb, JC
通讯作者：
Weinreb, JC