Extended coverage first-pass perfusion imaging using slice-interleaved TSENSE
Extended coverage first-pass perfusion imaging using slice-interleaved TSENSE
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DOI：
10.1002/mrm.10663
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发表时间：
2004-01-01
影响因子：
3.3
通讯作者：
Arai, AE
中科院分区：
文献类型：
--
作者：
Kellman, P;Derbyshire, JA;Arai, AE
将并行成像应用于首次通过的对比增强心脏MR可以在固定的时间分辨率下产生更大的空间覆盖率。该方法将使用TSENSE的速率R=2的加速与两个切片的快照到快照交织相结合。与切片交织相关的更长的有效重复时间(TR)和增加的翻转角在很大程度上补偿了RootR SNR的损失。以这种方式，在保持可比较或更好的图像质量的同时，实现了增加的空间覆盖。实现了单次心跳时间分辨率，其中8个切片的空间覆盖率高达71 bpm，6个切片的空间覆盖率高达95 bpm，4个切片的空间覆盖率高达143 bpm。对正常受试者(N=6)进行实验，以评估信噪比(SNR)和对比噪声比(CNR值)。2003年出版，Wiley-Liss，Inc.(Dagger)。
Parallel imaging applied to first-pass, contrast-enhanced cardiac MR can yield greater spatial coverage for a fixed temporal resolution. The method combines rate R = 2 acceleration using TSENSE with shot-to-shot interleaving of two slices. The rootR SNR loss is largely compensated for by a longer effective repetition time (TR) and increased flip angle associated with slice interleaving. In this manner, increased spatial coverage is achieved while comparable or better image quality is maintained. Single-heartbeat temporal resolution was accomplished with spatial coverage of eight slices at heart rates up to 71 bpm, six slices up to 95 bpm, and four slices up to 143 bpm. Experiments in normal subjects (N = 6) were performed to assess signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) values. Published 2003 Wiley-Liss, Inc.(dagger).