产前超声测量胎儿马尾神经参数诊断脊髓拴系综合征  

Prenatal ultrasound measured fetal cauda equina nerve parameters for diagnosing tethered cord syndrome

作　　者：唐瑶 李胜利[2] 张昭萍 黄娜娜 王芸 罗宁 周舟 曹显梅 TANG Yao;LI Shengli;ZHANG Zhaoping;HUANG Nana;WANG Yun;LUO Ning;ZHOU Zhou;CAO Xianmei(Department of Ultrasound,Prenatal Diagnosis Center,The Affiliated Hospital of Guizhou Medical University,Guiyang 550001,China;Department of Ultrasound,Shenzhen Maternity and Child Healthcare Hospital,Southern Medical University,Shenzhen 518028,China)

机构地区：[1]贵州医科大学附属医院产前诊断中心超声部,贵州贵阳550001 [2]南方医科大学深圳妇幼保健院超声科,广东深圳518028

出　　处：《中国医学影像技术》2024年第11期1647-1650,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的 观察产前超声测量胎儿马尾神经参数诊断脊髓拴系综合征(TCS)的价值。方法 回顾性纳入46胎TCS胎儿(TCS组)及591胎健康胎儿(对照组),采用产前超声测量马尾神经长度、面积及角度并进行组间比较,分析其诊断TCS的价值。结果 组间胎儿马尾神经长度、面积及角度差异均有统计学意义(P均<0.05)。以胎儿马尾神经长度、面积及角度诊断TCS的曲线下面积分别为0.924、0.809及0.972。结论 产前超声测量胎儿马尾神经参数对诊断TCS的价值较高。Objective To observe the effectiveness of ultrasound wide beam(WB)-based harmonic motion imaging(HMI)(WB-HMI)for locating irradiation focus of high intensity focused ultrasound(HIFU)for in vitro tissue.Methods WB-HMI technology was developed with acoustic radiation force and ultrasound imaging as the key technology.For in vitro porcine tenderloin and bovine liver tissue,different amplitude modulation(AM)frequencies(25—100 Hz)and excitation acoustic power(0.7—28 W)were used to achieve WB-HMI localization of HIFU irradiation focus,and the differences of WB-HMI localization of HIFU irradiation focus under different parameter combinations were observed.Taken the actual focus position on ultrasonic image after HIFU as the standard and the focus positioning error<1 mm as the effective standard of WB-HMI locating irradiation focus,the locating success rate was calculated.Results The larger the acoustic power,the larger the displacement amplitude of irradiation focus by WB-HMI at the same AM frequency,while the smaller the AM frequency,the larger the displacement amplitude of irradiation focus located by WB-HMI under the same acoustic power.Under different AM frequencies,for in vitro porcine tenderloin,the success rate of WB-HMI for locating HIFU radiation focus was higher than 90.00%when acoustic power was 15 W or 22 W,whereas the success rate showed a decreasing trend when the acoustic power was 28 W.For in vitro bovine liver tissue,the success rate of WB-HMI localization was 100%when acoustic power was≥7.0 W.Conclusion WB-HMI could be used to effectively locate HIFU irradiation focus for isolated tissue.

关 键 词：胎儿 神经管缺陷 脊髓圆锥 超声检查 

分 类 号：R714.53[医药卫生—妇产科学] R445.1[医药卫生—临床医学]