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在手术前的跨导管大动脉植入计算机断层扫描中减少对比体积:与64和256多检测器排列计算机断层扫描进行比较

T Yoshiura¹, T Masuda², Y Kobayashi³

¹Graduate School of Health Sciences, Kumamoto University, Kuhonji 4-24-1, Chuo-ku, Kumamoto, 860-0976, Japan; Department of Medical Technology, Tsuchiya General Hospital, Nakajima-cho 3-30, Naka-ku, Hiroshima, 730-8655, Japan.

Radiography (London, England : 1995)

|January 4, 2024

概括

较新的256-MDCT扫描为跨导管大动脉植入 (TAVI) 计算机断层扫描 (CT) 程序提供了更好的血管增强和图像质量. 这种先进的技术显著降低了对比剂和辐射剂量,使患者受益.

科学领域:

放射学放射学是一门学科.
心血管成像 - 心血管成像
医学物理医学物理

背景情况:

术前计算机断层扫描 (CT) 对于跨导管大动脉植入 (TAVI) 计划至关重要.
优化对比剂 (CM) 和辐射剂量至关重要,特别是对于功能障碍患者.

研究的目的:

为了比较血管增强和辐射剂量,256-多检测器行CT (MDCT) 与减少CM和64-MDCT与标准CM之间的术前TAVICT.
为了评估图像质量 (IQ),并评估TAVI成像中剂量降低的可行性.

主要方法:

一项涉及78名接受手术前TAVICT的患者的比较研究.
患者被分为两组:64-MDCT与标准CM (1.5mL/kg) 和256-MDCT与减少CM (1.0mL/kg).
分析了血管增强,智商得分和辐射剂量,并在两组之间进行了比较.

主要成果:

在256-MDCT组显示显著更高的血管增强在关节下动脉,尽管33%的CM减少.
在256-MDCT组中,大动脉根的图像质量得分优于256-MDCT组,而大腿部接入路线显示了可比得分.
在256-MDCT组中观察到有效辐射剂量显著减少30%.

结论:

使用256-MDCT和减少CM的手术前TAVICTCT提供与64-MDCT相比可比或优异的血管增强和智商.
这种方法可以大幅减少CM和辐射剂量,使其成为TAVI患者,特别是功能障碍患者的潜在有价值的技术.

关键词:

计算机断层扫描血管图谱.增强对比度增强对比度相反的介质是对比的介质.辐射剂量辐射剂量穿过导管的大动脉植入装置.

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