640层冠脉CTA前瞻性扫描技术辐射剂量的多因素分析

Multivariate Analysis of the Radiation Dose of the 640-Slice Coronary CTA Prospective Scanning Technique

摘要: 目的：探讨影响640层冠脉CTA前瞻性扫描技术有效辐射剂量的主要因素。方法：收集2020年12月~2022年9月于我院影像科接受检查的疑似冠心病患者347例，记录患者性别、年龄、体重、BMI、心率、收缩压、舒张压、Beat数、剂量长度乘积(DLP)值，计算出有效剂量，分析各影响因素与有效剂量的相关性。结果：脉率、Beat数及性别对有效剂量影响较大，女性有效剂量高于女性；脉率越快，有效剂量越高；beat数越多，有效剂量越高。结论：640层冠脉CTA前瞻性扫描技术检查应规范检查流程，优化采集方案可以有效降低有效辐射剂量。

Abstract: Objective: To explore the main factors affecting the effective radiation dose of coronary CTA. Meth-ods: 347 patients with suspected coronary heart disease who were examined in the imaging de-partment of our hospital from December 2020 to September 2022 were collected, the gender, age, weight, BMI, heart rate, systolic pressure, diastolic pressure, beat number, and dose length product (DLP) values were recorded, the effective dose was calculated, and the correlation between each in-fluencing factor and the effect of the effective dose was analyzed. Results: Pulse rate, Beat number and gender influenced the effective dose, and the effective dose was higher in women than in wom-en; the faster the pulse rate, the higher the effective dose; the more beats, the higher the effective dose. Conclusion: The 640-layer coronary CTA prospective scanning technique should standardize the examination process, and optimizing the collection scheme can effectively reduce the effective radiation dose.