Liver acquisition with volume acceleration flex on 70-cm wide-bore and 60-cm conventional-bore 3.0-T MRI
Liver acquisition with volume acceleration flex on 70-cm wide-bore and 60-cm conventional-bore 3.0-T MRI
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DOI：
10.1007/s12194-015-0344-z
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发表时间：
2016-07-01
影响因子：
1.6
通讯作者：
Hashido, Takashi
中科院分区：
文献类型：
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作者：
Saito, Shigeyoshi;Tanaka, Keiko;Hashido, Takashi
本研究旨在比较在60 cm常规孔径和70 cm宽孔径3.0 T磁共振成像（MRI）上使用容积加速Flex（LAVA-Flex）和LAVA进行肝脏采集的脂肪抑制均匀性和图像质量。LAVA-Flex和LAVA的脂肪抑制均匀性被评估为在肝顶、门和肾门水平抑制浅表脂肪的效率。使用以下公式计算百分比标准偏差（%SD）：%SD（%）= 100 x感兴趣区域（ROI）的SD/ROI中信号强度（SI）的平均值。计算信噪比（SNR）和对比度（CR）。在LAVA序列中，宽孔3.0-T MRI所有层面的%SD均显著高于常规孔3.0-T MRI（P
This study aimed to compare the uniformity of fat suppression and image quality between liver acquisition with volume acceleration flex (LAVA-Flex) and LAVA on 60-cm conventional-bore and 70-cm wide-bore 3.0-T magnetic resonance imaging (MRI). The uniformity of fat suppression by LAVA-Flex and LAVA was assessed as the efficiency of suppression of superficial fat at the levels of the liver dome, porta, and renal hilum. Percentage standard deviation (%SD) was calculated using the following equation: %SD (%) = 100 x SD of the regions of interest (ROIs)/mean value of the signal intensity (SI) in the ROIs. Signal-to-noise ratio (SNR) and contrast ratio (CR) were calculated. In the LAVA sequence, the %SD in all slices on wide-bore 3.0-T MRI was significantly higher than that on conventional-bore 3.0-T MRI (P