| 王静,张冬宇,吴楠,韩战波,郭胜,祁健,吴国良,尹楚豪,章东.自研实时三维心腔内超声心动图系统[J].中国医学影像技术,2025,41(10):1653~1658 |
| 自研实时三维心腔内超声心动图系统 |
| Self-developed real-time three-dimensional intracardiac echocardiography system |
| 投稿时间：2025-07-07 修订日期：2025-10-16 |
| DOI：10.13929/j.issn.1003-3289.2025.10.009 |
| 中文关键词: 体模,成像 猪 超声心动描记术 介入治疗 |
| 英文关键词:phantoms, imaging swine echocardiography, three-dimensional interventional therapy |
| 基金项目:浙江省科技计划项目(2024C03069)。 |
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| 中文摘要: |
| 目的 观察自研实时三维心腔内超声心动图(ICE)系统的性能及安全性。方法 利用一次性无菌实时三维ICE导管(简称导管)和多功能推车式数字超声成像主机(简称超声主机)构建自研ICE系统(简称系统)。导管直径10F、有效长度90 cm,头端集成二维面阵换能器阵列(840阵元);以匹配连接器将其与超声主机连接。采用自制实验装置和标准体模评估系统性能;通过活体动物实验观察其安全性及成像质量。结果 系统最大成像深度≥60 mm,40 mm内其轴向分辨率≤1 mm、侧向分辨率≤1 mm,横、纵向几何位置精度误差分别≤10%和≤5%,图像几何畸变≤10%,测量体积误差≤30%。于超声引导下成功经股静脉途径将自研导管置入猪右心房,全程顺畅,未出现折弯或卡顿,且可操控性良好;所[LM]获图像清晰、显示心腔结构完整,分辨率可满足诊断需求。动物尸检未见操作相关损伤。结论 自研ICE系统稳定、安全,初步结果显示其性能可基本满足临床应用需求。 |
| 英文摘要: |
| Objective To observe the performance and safety of self-developed real-time three-dimensional intracardiac echocardiography (ICE) system (system). Methods The self-developed system was constructed using disposable sterile real-time three-dimensional ICE catheter (catheter) and multifunctional cart-mounted digital ultrasound imaging host (ultrasound host). The diameter of catheter was 10F, with effective length of 90 cm and two-dimensional array transducer array (840 elements) integrated at tip. The ultrasound host was connected to the catheter through matching connector. The performance of this system was evaluated with self-made experimental equipment and standard phantom, and live animal experiment was performed to observe its safety and imaging quality. Results The maximum imaging depth of this system was ≥60 mm. Its axial resolution was ≤1 mm and lateral resolution was ≤1 mm within the depth of 40 mm, the horizontal and vertical geometric position accuracy errors were ≤10% and ≤5%, respectively, while the image geometric distortion was ≤10%, and the measurement volume error was ≤30%. The catheter was successfully inserted into right atrium of pig through femoral vein under ultrasound guidance, smoothly passing through the vascular pathway without any bending or jamming with good controllability. The cardiac images of this system were clear, which completely displayed cardiac chamber structures, and the image resolution met diagnostic requirement. No injury related to interventional procedures was found in laboratory tests nor anatomical results. Conclusion The self-developed ICE system was stable and safe, and initial results showed it could meet clinical application expectations. |
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