Wayte S C, Redpath T W, Beale D J
Department of Clinical Physics and Bioengineering, Walsgrave Hospital, Coventry, UK.
Phys Med Biol. 1993 Mar;38(3):455-63. doi: 10.1088/0031-9155/38/3/011.
The technical difficulties in designing a SPAMM sequence to image pulsatile cerebrospinal fluid (CSF) flow at different phases of the cardiac cycle are described. The criteria used to select the most appropriate order of binomial SPAMM sequence are outlined. Data collection times required to view both cephalad and caudad flow for all R-R intervals were considered. The flip angles of the RF pulses required to produce images with equal CSF intensity throughout the cardiac cycle were investigated in detail.
描述了设计用于在心动周期不同阶段对搏动性脑脊液（CSF）流动进行成像的SPAMM序列时遇到的技术难题。概述了用于选择二项式SPAMM序列最合适阶数的标准。考虑了观察所有R-R间期的头向和尾向血流所需的数据采集时间。详细研究了在整个心动周期产生具有相等CSF强度图像所需的射频脉冲翻转角。
