| 高强度聚焦超声辐照离体牛肝组织后B超声像图出现强回声的原因 |
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| 引用本文： | 易华容,陈杰,李发琪,钟明松,艾慧坚,王智彪.高强度聚焦超声辐照离体牛肝组织后B超声像图出现强回声的原因[J].中国医学影像技术,2011,27(5):873-876. |
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| 作者姓名： | 易华容 陈杰 李发琪 钟明松 艾慧坚 王智彪 |
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| 作者单位： | 重庆医科大学生物医学工程系,省部共建超声医学工程国家重点实验室,超声医学工程重庆市市级重点实验室,重庆,400016 |
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| 基金项目： | 国家自然科学基金面上项目(30970827)、国家自然科学基金重点项目(30830040)。 |
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| 摘 要： | 目的 研究B超监控高强度聚焦超声(HIFU)治疗后声像图中强回声出现的原因。方法 HIFU定点辐照离体牛肝组织,深度为15 mm,辐照功率分别采用50、100、150、200、250和300 W,通过MR测温仪得到不同功率下组织最高温度达到55℃时所需辐照时间。将结果用于B超监控HIFU中,并通过被动空化检测(PCD)实时观察辐照过程中声信号的频域特性。结果 辐照功率50 W时虽有组织凝固性坏死,但B超声像图中无强回声出现,且通过PCD在频域信号中未观察到二分之一次谐波;功率≥100 W时出现凝固性坏死,且声像图中有强回声出现,频域信号中可明显观察到二分之一次谐波。结论 无沸腾气泡产生时,HIFU辐照离体牛肝组织后,空化效应产生的空化泡致使B超声像图中出现强回声。
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| 关 键 词： | 高强度聚焦超声 强回声 被动空化检测 二分之一次谐波 |
| 收稿时间： | 2010/11/16 0:00:00 |
| 修稿时间： | 2011/1/16 0:00:00 |
Causes of the appearance of hyperechoic regions of ex vivo bovine liver on B-mode ultrasound images after high intensity focused ultrasound therapy |
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| YI Hua-rong,CHEN Jie,LI Fa-qi,ZHONG Ming-song,AI Hui-jian and WANG Zhi-biao.Causes of the appearance of hyperechoic regions of ex vivo bovine liver on B-mode ultrasound images after high intensity focused ultrasound therapy[J].Chinese Journal of Medical Imaging Technology,2011,27(5):873-876. |
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| Authors: | YI Hua-rong CHEN Jie LI Fa-qi ZHONG Ming-song AI Hui-jian and WANG Zhi-biao |
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| Institution: | State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China;State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China;State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China;State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China;State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China;State Key Laboratory of Ultrasound Engineering in Medicine Co-founded by Chongqing and the Ministry of Science and Technology, Chongqing Key Laboratory of Ultrasound in Medicine and Engineering, Department of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China |
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| Abstract: | |
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| Keywords: | High intensity focused ultrasound Hyperecho Passive cavitation detection Half harmonic emission |
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