Comparison of ultrafast wave-controlled aliasing in parallel imaging (CAIPI) magnetization-prepared rapid acquisition gradient echo (MP-RAGE) and standard MP-RAGE in non-sedated children: initial clinical experience
Comparison of ultrafast wave-controlled aliasing in parallel imaging (CAIPI) magnetization-prepared rapid acquisition gradient echo (MP-RAGE) and standard MP-RAGE in non-sedated children: initial clinical experience
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DOI：
10.1007/s00247-021-05117-5
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发表时间：
2021-07-15
影响因子：
2.3
通讯作者：
Caruso, Paul J.
中科院分区：
文献类型：
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作者：
Tabari, Azadeh;Conklin, John;Caruso, Paul J.
快速磁共振成像（MRI）序列在儿童成像中具有优势，因为它们可以减轻儿童不适，减少运动伪影并提高扫描仪的可用性。目的评价超快波-并行控制混叠成像（caipi） MP-RAGE（磁化制备快速梯度回波）序列用于清醒儿童脑成像的可行性。材料和方法每台MRI包括一个标准的MP-RAGE序列和一个超快波MP-RAGE序列。两名神经放射学家根据伪影、噪声、解剖对比和病理对比对这两种序列进行了评估。两名独立的儿科神经放射学家使用了预定义的5分制量表。使用Wilcoxon符号秩检验来评估每个变量序列之间的差异。结果共纳入24例患者，男性14例，平均年龄11.5±4.5岁，年龄范围1个月~ 17.8岁。Wave-CAIPI MP-RAGE使用32通道线圈可减少77%的扫描时间，使用20通道线圈可减少70%的扫描时间。标准MP-RAGE和wave-CAIPI MP-RAGE的病理可视化、伪影和病理增强（包括实质、脑轻脑膜和硬脑膜增强）无显著差异（P < 0.05）。中环(P)
Background Fast magnetic resonance imaging (MRI) sequences are advantageous in pediatric imaging as they can lessen child discomfort, decrease motion artifact and improve scanner availability. Objective To evaluate the feasibility of an ultrafast wave-CAIPI (controlled aliasing in parallel imaging) MP-RAGE (magnetization-prepared rapid gradient echo) sequence for brain imaging of awake pediatric patients. Materials and methods Each MRI included a standard MP-RAGE sequence and an ultrafast wave-MP-RAGE sequence. Two neuroradiologists evaluated both sequences in terms of artifacts, noise, anatomical contrast and pathological contrast. A predefined 5-point scale was used by two independent pediatric neuroradiologists. A Wilcoxon signed-rank test was used to evaluate the difference between sequences for each variable. Results Twenty-four patients (14 males; mean age: 11.5 +/- 4.5 years, range: 1 month to 17.8 years) were included. Wave-CAIPI MP-RAGE provided a 77% reduction in scan time using a 32-channel coil and a 70% reduction using a 20-channel coil. Visualization of the pathology, artifacts and pathological enhancement (including parenchymal, leptomeningeal and dural enhancement) was not significantly different between standard MP-RAGE and wave-CAIPI MP-RAGE (all P>0.05). For central (P