QUIPSS II with window-sliding saturation sequence (Q2WISE).
QUIPSS II with window-sliding saturation sequence (Q2WISE).
复制标题
具有窗口滑动饱和序列 (Q2WISE) 的 QUIPSS II。
DOI：
10.1002/mrm.23093
复制
发表时间：
2012
影响因子：
3.3
通讯作者：
Hillenbrand,ClaudiaM
中科院分区：
文献类型：
--
作者：
Song,Ruitian;Loeffler,RalfB;Hillenbrand,ClaudiaM
一系列周期性饱和脉冲用于最大限度地减少在使用具有薄层TI 1周期性饱和（Q2 TIPS）的单次减影II进行灌注定量成像评估灌注时因不同传输延迟而导致的误差，从而增加了比吸收率。已经开发了使用具有窗口滑动饱和序列（Q2 WISE）的单次减影II的灌注定量成像，其中许多薄饱和脉冲被以窗口滑动方式排列在标记区域内的两个薄脉冲和一个厚饱和脉冲所取代，以保持清晰的切片轮廓，同时降低比吸收率。Q2 WISE本质上是Q2 TIPS和灌注定量成像的混合体，使用单次减影II，用于比吸收率密集型应用。在3 T MRI扫描仪上应用Q2 WISE测量8名健康志愿者脑和肾的灌注率，并与Q2 TIPS的结果进行比较。两种方法的脑（75 ± 17 [Q2 WISE]和74 ± 13 mL/100 g/min [Q2 TIPS]）和肾（308 ± 48 [Q2 WISE]和299 ± 43 mL/100 g/min [Q2 TIPS]）的平均灌注值非常一致。Magn Reson Med，2011年。© 2011 Wiley利斯公司
A series of periodic saturation pulses used to minimize the error caused by varying transit delays in assessing perfusion using quantitative imaging of perfusion using a single subtraction II with thin‐slice TI1periodic saturation (Q2TIPS) increases the specific absorption rate. Quantitative imaging of perfusion using a single subtraction II with window‐sliding saturation sequence (Q2WISE) has been developed, in which numerous thin saturation pulses are replaced by two thin pulses and one thick saturation pulse arranged in a window‐sliding manner within the labeling region to maintain a sharp slice profile while reducing specific absorption rate. Q2WISE essentially is a hybrid between Q2TIPS and quantitative imaging of perfusion using a single subtraction II for use in specific absorption rate intensive applications. Q2WISE was implemented on a 3 T MRI scanner to measure perfusion rates in the brain and kidneys of eight healthy volunteers and results were compared with those from Q2TIPS. Mean perfusion values of both methods for the brain (75 ± 17 [Q2WISE] and 74 ± 13 mL/100 g/min [Q2TIPS]) and kidney (308 ± 48 [Q2WISE] and 299 ± 43 mL/100 g/min [Q2TIPS]) were in very good agreement. Magn Reson Med, 2011. © 2011 Wiley‐Liss, Inc.