| 任晓敏,刘淑萍,常洪波,赵国政,陈泗英,孙娅慧,李利.柔性超声阵列换能技术用于测量血管内径及血液流速[J].中国医学影像技术,2025,41(5):794~798 |
| 柔性超声阵列换能技术用于测量血管内径及血液流速 |
| Flexible ultrasound array transducer technology for measuring intravascular diameter and blood flow velocity |
| 投稿时间：2024-10-31 修订日期：2025-01-06 |
| DOI：10.13929/j.issn.1003-3289.2025.05.021 |
| 中文关键词: 超声检查 血管 换能器 |
| 英文关键词:ultrasonography blood vessels transducers |
| 基金项目:空军后勤部应用基础研究自主项目(CKJWS221C002)。 |
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| 中文摘要: |
| 目的 观察柔性超声阵列换能器样机用于测量血管内径及血液流速的可行性。方法 设计及制作柔性超声阵列换能器样机(简称样机),包括贴片式柔性超声阵列换能器(简称换能器)及采集系统。以多普勒体模与仿血管控制系统模拟人体血液,分别以Mindray M7彩色多功能超声诊断仪(M7超声仪)及样机检测脉冲波激发模式、频谱形态、回波信号时间间隔及血流流速等,以前者结果为标准,评估样机检测的有效性;之后分别对20名健康受试者测量左颈总动脉、左肱动脉及左桡动脉内径及流速,评估测量结果的一致性。基于受试者对应用换能器舒适度的主观评分结果及去除换能器后有无皮肤不适、损伤等评估样机安全性。结果 利用样机成功对多普勒体模与仿血管控制系统清晰采集血流频谱,所获频谱形态、流速及回波信号时间间隔与M7超声仪检测结果基本一致。两种方法所测受试者左颈总动脉、左肱动脉及左桡动脉内径均有很强一致性(ICC=0.919~0.992),所测流速具有中等或很强一致性(ICC=0.524~0.831)。受试者舒适度主观评分为3(2,3),去除后均无皮肤不适。结论 柔性超声阵列换能技术可用于测量血管内径及血液流速。 |
| 英文摘要: |
| Objective To explore the feasibility of prototype of flexible ultrasound array transducer for measuring intravascular diameter and blood flow velocity. Methods A prototype of flexible ultrasonic array transducer composed of a surface mount flexible ultrasonic array transducer (referred to as the transducer) and acquisition system was designed and fabricated. Doppler body model and vascular simulation control system was used to simulate human blood. Mindray M7 color multi-functional ultrasound diagnostic instrument (abbreviated as M7) and the prototype were adopted to detect pulse wave excitation mode, spectral morphology, echo signal time interval, blood flow velocity, etc. Taken the results of M7 as standards, the effectiveness of the prototype was evaluated. Then the inner diameter and flow velocity of left common carotid artery, left brachial artery and left radial artery of 20 healthy controls (HC) were measured respectively using M7 and the prototype, and the consistency of measurement results were analyzed to evaluate the accuracy of the prototype. The safety of the prototype was evaluated according to subjectively scoring the comfort level of HC applying the transducer and whether there was skin discomfort, injury, etc. after removing the transducer. Results The collected blood flow spectrum of the above vascular simulation control system acquire with the prototype were clear, and the spectral morphology, flow velocity, as well as echo signal time interval were basically consistent with those of M7. The consistency of the inner diameter of left common carotid artery, left brachial artery and left radial artery measured by the prototype and M7 in 20 HC were all very strong (ICC=0.919—0.992), while of flow velocities were moderate or very strong (ICC=0.524—0.831). The subjective score of comfort level of application of transducer was 3 (2, 3), and no skin discomfort occurred. Conclusion Flexible ultrasound array transducer technology could be used to measure intravascular diameter and blood flow velocity. |
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