A Dedicated 36-Channel Receive Array for Fetal MRI at 3T.
A Dedicated 36-Channel Receive Array for Fetal MRI at 3T.
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用于 3T 胎儿 MRI 的专用 36 通道接收阵列
DOI：
10.1109/tmi.2018.2839191
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发表时间：
2018-10
影响因子：
10.6
通讯作者：
Zheng H
中科院分区：
文献类型：
--
作者：
Chen Q;Xie G;Luo C;Yang X;Zhu J;Lee J;Su S;Liang D;Zhang X;Liu X;Li Y;Zheng H
由于缺乏胎儿成像线圈，通常使用标准的商用腹部线圈进行胎儿成像，但其性能受到覆盖范围、元件数量和信噪比（SNR）不足的限制。本文设计了一种专用的36通道线圈阵列，其尺寸最适合妊娠20至37周以上的体型，用于3T胎儿成像。通过模型研究对具有全相位编码的 SNR 和表示为并行成像噪声放大的 G 因子进行了定量评估。与商用腹部线圈阵列相比，所提出的36通道胎儿阵列不仅提供了全相位编码的SNR改善（在整个胎儿身体所在的区域中提高了10％，在胎儿大脑和心脏可能出现的边缘区域中提高了40％），而且还提供了增强的并行成像能力和在高加速因子下显着的SNR改善。
Due to a lack of fetal imaging coils, the standard commercial abdominal coil is often used for fetal imaging, the performance of which is limited by its insufficient coverage, element number, and Signal-to-noise ratio (SNR). In this paper, a dedicated 36-channel coil array, of which size can best fit the body sizes of pregnancy gestation from 20 to 37+ weeks, was designed for fetal imaging at 3T. SNR with full phase encoding and G-factor denoted as noise amplification for parallel imaging were quantitatively evaluated by phantom studies. Compared with a commercial abdominal coil array, the proposed 36-channel fetal array provides not only SNR improvements in full phase encoding (with 10% in the region where the whole fetal body was located, and up to 40% in the edge region where the fetal brain and heart may appear) but also an augmented parallel imaging capability and remarkable SNR improvements at high acceleration factors.