Optimal Blood Suppression Inversion Time Based on Breathing Rates and Heart Rates to Improve Renal Artery Visibility in Spatial Labeling with Multiple Inversion Pulses: A Preliminary Study.
Optimal Blood Suppression Inversion Time Based on Breathing Rates and Heart Rates to Improve Renal Artery Visibility in Spatial Labeling with Multiple Inversion Pulses: A Preliminary Study.
复制标题
基于呼吸频率和心率的最佳血液抑制反转时间，以改善肾脏。
DOI：
10.3348/kjr.2016.17.1.69
复制
发表时间：
2016-01
影响因子：
4.8
通讯作者：
Li W
中科院分区：
文献类型：
--
作者：
Pei Y;Li F;Shen H;Long X;Liu H;Wang X;Liu J;Li W
在多反转脉冲空间标记（SLEEK）中，确定最佳血液抑制反转时间（BSP TI）是否可以提高高血压受试者的动脉可见性，以及最佳BSP TI是否与呼吸率（BR）和心率（HR）相关。该前瞻性研究包括10名志愿者和93名连续的高血压患者，他们在1.5T MRI系统下接受了SLEEK。首先对10名志愿者进行了肾动脉显示的BSP TI测定。其次，选择合适的BSP TI值对高血压患者进行非对比增强磁共振血管成像。然后，评估肾动脉，并确定每例患者增加动脉可见性的最佳BSP TI。记录患者的BR和HR，并分析其与最佳BSP TI的关系。2名阅片者的最佳BSP TI与BR（r1 =-0.536，P1 < 0.001; r2 =-0.535，P2 < 0.001）和HR（r1 =-0.432，P1 = 0.001; r2 =-0.419，P2 = 0.001）呈负相关（κ = 0.93）。对于改善肾动脉的可见性，BSP TI = 800 ms可作为最佳BSP TI，当读片者1的95%置信区间为17-19/min（BR 1）和74-82 bpm（HR 1），读片者2的95%置信区间为17-19/min（BR 2）和74-83 bpm（HR 2）时;两个读数器的BSP TI = 1100 ms，14-15/min（BR 1，2）和71-76 bpm（HR 1，2）;读数器1为13-16/min（BR 1）和63-68 bpm（HR 1），读数器2为14-15/min（BR 2）和64-70 bpm（HR 2）时，BSP TI = 1400 ms。在SLEEK中，BSP TI受患者BR和HR的影响。采用基于BR和HR的最佳BSP TI可以提高肾动脉的可视性，从而提高工作效率。
To determine whether an optimal blood suppression inversion time (BSP TI) can boost arterial visibility and whether the optimal BSP TI is related to breathing rate (BR) and heart rate (HR) for hypertension subjects in spatial labeling with multiple inversion pulses (SLEEK). This prospective study included 10 volunteers and 93 consecutive hypertension patients who had undergone SLEEK at 1.5T MRI system. Firstly, suitable BSP TIs for displaying clearly renal artery were determined in 10 volunteers. Secondly, non-contrast enhanced magnetic resonance angiography with the suitable BSP TIs were performed on those hypertension patients. Then, renal artery was evaluated and an optimal BSP TI to increase arterial visibility was determined for each patient. Patients' BRs and HRs were recorded and their relationships with the optimal BSP TI were analyzed. The optimal BSP TI was negatively correlated with BR (r1 = -0.536, P1 < 0.001; and r2 = -0.535, P2 < 0.001) and HR (r1 = -0.432, P1 = 0.001; and r2 = -0.419, P2 = 0.001) for 2 readers (κ = 0.93). For improving renal arterial visibility, BSP TI = 800 ms could be applied as the optimal BSP TI when the 95% confidence interval were 17-19/min (BR1) and 74-82 bpm (HR1) for reader#1 and 17-19/min (BR2) and 74-83 bpm (HR2) for reader#2; BSP TI = 1100 ms while 14-15/min (BR1, 2) and 71-76 bpm (HR1, 2) for both readers; and BSP TI = 1400 ms when 13-16/min (BR1) and 63-68 bpm (HR1) for reader#1 and 14-15/min (BR2) and 64-70 bpm (HR2) for reader#2. In SLEEK, BSP TI is affected by patients' BRs and HRs. Adopting the optimal BSP TI based on BR and HR can improve the renal arterial visibility and consequently the working efficiency.