A 64-channel 3T array coil for accelerated brain MRI.
A 64-channel 3T array coil for accelerated brain MRI.
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DOI：
10.1002/mrm.24427
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发表时间：
2013-07
影响因子：
3.3
通讯作者：
Wald, Lawrence L.
中科院分区：
文献类型：
--
作者：
Keil, Boris;Blau, James N.;Biber, Stephan;Hoecht, Philipp;Tountcheva, Veneta;Setsompop, Kawin;Triantafyllou, Christina;Wald, Lawrence L.
开发了一种64通道脑阵列线圈，并与采用相同线圈架几何结构构建的32通道阵列进行了比较，以精确隔离阵列线圈元件增加两倍的益处。构建的线圈是为标准临床3T MRI扫描仪开发的，并在枕极周围使用了轮廓头形弯曲线圈架，并在颈部逐渐变细，以提高灵敏度和患者舒适度。此外，该设计是一种紧凑的分体式设计，旨在用于坚固的日常使用。在人体成像中定量评价并行成像的信噪比（SNR）和噪声放大（G因子），并与尺寸和形状匹配的32通道阵列线圈进行比较。对于非加速成像，64通道阵列在大脑中心提供了与32通道阵列相似的SNR，而在大脑皮层提供了1.3倍的SNR。在64通道阵列的高度平行成像期间降低的噪声放大提供了在给定噪声放大下比大小匹配的32通道阵列高大约一个单位的加速能力。例如，与32通道阵列相比，在4倍加速率下，64通道阵列的中枢脑和皮层SNR分别高1.2倍和1.4倍。线圈的特性在加速脑成像中得到证实。
A 64-channel brain array coil was developed and compared to a 32-channel array constructed with the same coil former geometry in order to precisely isolate the benefit of the two-fold increase in array coil elements. The constructed coils were developed for a standard clinical 3T MRI scanner and used a contoured head-shape curved former around the occipital pole and tapered in at the neck to both improve sensitivity and patient comfort. Additionally, the design is a compact, split-former design intended for robust daily use. Signal-to-noise ratio (SNR) and noise amplification (G-factor) for parallel imaging were quantitatively evaluated in human imaging and compared to a size and shape-matched 32-channel array coil. For unaccelerated imaging, the 64-channel array provided similar SNR in the brain center to the 32-channel array and 1.3-fold more SNR in the brain cortex. Reduced noise amplification during highly parallel imaging of the 64-channel array provided the ability to accelerate at approximately one unit higher at a given noise amplification compared to the sized-matched 32-channel array. For example, with a 4-fold acceleration rate, the central brain and cortical SNR of the 64-channel array was 1.2 and 1.4-fold higher, respectively, compared to the 32-channel array. The characteristics of the coil are demonstrated in accelerated brain imaging.
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影响因子：
5.2
作者：
BUSHBY, KMD;COLE, T;GOODSHIP, JA
通讯作者：
GOODSHIP, JA
影响因子：
3.3
作者：
Griswold, MA;Jakob, PM;Haase, A
通讯作者：
Haase, A
影响因子：
3.7
作者：
Feinberg DA;Moeller S;Smith SM;Auerbach E;Ramanna S;Gunther M;Glasser MF;Miller KL;Ugurbil K;Yacoub E
通讯作者：
Yacoub E
影响因子：
3.3
作者：
Robson, Philip M.;Grant, Aaron K.;Madhuranthakam, Ananth J.;Lattanzi, Riccardo;Sodickson, Daniel K.;McKenzie, Charles A.
通讯作者：
McKenzie, Charles A.
影响因子：
3.3
作者：
Keil, Boris;Wiggins, Graham C.;Triantafyllou, Christina;Wald, Lawrence L.;Meise, Florian M.;Schreiber, Laura M.;Klose, Klaus J.;Heverhagen, Johannes T.
通讯作者：
Heverhagen, Johannes T.