Intravascular ultrasound tissue harmonic imaging in vivo

被引：0
|
作者：
Frijlink, ME [1 ]
Goertz, DE [1 ]
van Damme, LCA [1 ]
Krams, R [1 ]
van der Steen, AFW [1 ]
机构：
[1] Erasmus Univ, Med Ctr, Rotterdam, Netherlands
来源：
2004 IEEE ULTRASONICS SYMPOSIUM, VOLS 1-3 | 2004年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The feasibility of Tissue Harmonic Imaging with a prototype Intravascular Ultrasound (IVUS) system using a conventional single-element rotating IVUS catheter was investigated. Hydrophone measurements showed fundamental peak pressures of 1.9 MPa on-axis of such a catheter in water. The second harmonic signal at 40 MHz built up to 0.55 MPa, corresponding to 11 dB below the peak fundamental pressure. Experiments performed in a tissue-mimicking phantom and in a rabbit aorta in vivo showed the feasibility of Tissue Harmonic Imaging with a conventional,IVUS catheter. When we applied averaging of four neighboring RF-lines in the in vivo acquisition, the Signal-to-Noise ratio of the harmonic image increased to 25 dB.
引用
收藏
页码：1118 / 1121
页数：4
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