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中华介入放射学电子杂志 ›› 2022, Vol. 10 ›› Issue (02) : 190 -195. doi: 10.3877/cma.j.issn.2095-5782.2022.02.012

影像诊断

应用CT灌注成像技术评估下肢血运重建术前后足部骨骼肌血流灌注的变化
汪涛1, 苏浩波1,(), 何旭1, 楼文胜1, 陈国平1, 钱成1, 李英豪1, 顾建平1   
  1. 1. 210006 江苏南京,南京医科大学附属南京医院(南京市第一医院)介入血管科
  • 收稿日期:2021-08-10 出版日期:2022-05-25
  • 通信作者: 苏浩波
  • 基金资助:
    江苏省医学会介入医学科研专项资金项目(SYH-3201140-0026); 南京医科大学科技发展基金一般项目(NMUB2019158)

Application of CT perfusion imaging in evaluation the changes of skeletal muscle perfusion before and after revascularization of lower limbs

Tao Wang1, Haobo Su1,(), Xu He1, Wensheng Lou1, Guoping Chen1, Cheng Qian1, Yinghao Li1, Jianping Gu1   

  1. 1. Department of Interventional Radiology, Nanjing First Hospital, Nanjing Medical University, Jiangsu Nanjing 210006, China
  • Received:2021-08-10 Published:2022-05-25
  • Corresponding author: Haobo Su
引用本文:

汪涛, 苏浩波, 何旭, 楼文胜, 陈国平, 钱成, 李英豪, 顾建平. 应用CT灌注成像技术评估下肢血运重建术前后足部骨骼肌血流灌注的变化[J/OL]. 中华介入放射学电子杂志, 2022, 10(02): 190-195.

Tao Wang, Haobo Su, Xu He, Wensheng Lou, Guoping Chen, Cheng Qian, Yinghao Li, Jianping Gu. Application of CT perfusion imaging in evaluation the changes of skeletal muscle perfusion before and after revascularization of lower limbs[J/OL]. Chinese Journal of Interventional Radiology(Electronic Edition), 2022, 10(02): 190-195.

目的

探讨CT灌注成像技术评估下肢动脉血运重建术前后患者双足骨骼肌血流灌注变化的可行性以及临床应用价值。

方法

纳入18例下肢动脉硬化闭塞症患者,行单侧下肢动脉介入治疗,未实施治疗的对侧肢体为对照组。分别在治疗前3天、治疗后第3天行双侧足部CT灌注扫描,原始CT灌注图像经VPCT Body软件处理后,对称选取双侧足底内侧肌群作为感兴趣区域(ROI),由此获得灌注参数:血容量(BV)、血流量(BF)、表面通透性(PMB)以及平均通过时间(MTT)。使用Wilcoxon符号秩验证分析灌注参数之间的差异。

结果

18例患者均成功实施介入治疗。在腔内治疗前,治疗侧足底内侧骨骼肌灌注参数(BV、BF、PMB、MTT)与对照组无明显差异(P > 0.05),而在腔内治疗后,治疗侧足底内侧骨骼肌灌注参数(BV、BF、PMB、MTT)与对照组存在差异(P < 0.05),其中,BV、BF、PMB较对照组上升,MTT、较对照组下降。此外,治疗前与治疗后对比,对照组的灌注参数(BV、BF、PMB、MTT)无明显变化(P > 0.05),而治疗组的灌注参数(BV、BF、PMB、MTT)有变化(P < 0.05),其中,BV、BF、PMB较治疗前上升,MTT较治疗前下降。

结论

CT灌注成像可以量化评估不同骨骼肌血流灌注的变化情况,为下肢血运重建方案的制定、疗效的评估以及预后判断提供依据,临床价值较高。

Objective

To evaluate the skeletal muscle perfusion using CT perfusion imaging before and after interventional treatment in patients with lower extremity arteriosclerosis obliterans.

Methods

18 patients with lower extremity arteriosclerosis obliterans were included in the study. Endovascular treatment was performed according to standard procedures in one lower extremity. The other one without endovascular treatment was included in the control group. CT perfusion scans were performed 3 days before and after treatment to collect all image data. After the CT perfusion image was processed by VPCT Body software, the bilateral medial plantar muscles were selected symmetrically as the region of interest (ROI), and the perfusion parameters were obtained: blood flow (BF), blood volume (BV), and mean transit time (MTT) and permeability (PMB). Wilcoxon signed rank test was used to compare differences between perfusion parameters.

Results

18 patients were successfully treated with endovascular treatment. Before interventional therapy, there was no significant difference between BV, BF, PMB and MTT in the treatment group and the control group. After interventional therapy, the BV, BF and PMB in the treatment group were significantly higher than those in the control group, and MTT in the treatment group were significantly lower than that in the control group. Before and after interventional therapy, there were no significant differences in BV, BF, PMB and MTT in the control group. In the treatment group,BV, BF and PMB were significantly higher , and the MTT decreased significantly.

Conclusions

CT perfusion imaging can be used to measure and evaluate the change of perfusion in lower extremity skeletal muscle in real time, which has high clinical value.

表1 入组患者基本临床资料
图1 患者足部CT灌注图像,使用面积为1.0 cm2左右的圆圈分别在两侧足底内侧骨骼肌选择ROI并获得对应灌注参数。1A:BV图;1B:BF图;1C:MTT图;1D:PMB图。
表2 下肢血运重建术前两侧足部骨骼肌CT灌注参数比较
表3 下肢血运重建术后两侧足部骨骼肌CT灌注参数比较
表4 下肢血运重建术前后治疗侧足部骨骼肌CT灌注参数比较
表5 下肢血运重建术前后对照侧足部骨骼肌CT灌注参数比较
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