Adaptive Beamforming for Thermal Strain Imaging Using a Single Ultrasound Linear Array

被引：4

作者：

Nguyen, Man M. ^{[1
,2
,3
]}

Ding, Xuan ^{[1
,2
,3
,4
]}

Yu, Francois ^{[1
,2
,3
]}

Kim, Kang ^{[1
,2
,3
,4
,5
]}

机构：

[1] Univ Pittsburgh, Sch Med, Dept Med, Ctr Ultrasound Mol Imaging & Therapeut, Pittsburgh, PA 15213 USA

[2] Univ Pittsburgh, Sch Med, Inst Heart & Vasc, Pittsburgh, PA 15213 USA

[3] UPMC, Pittsburgh, PA USA

[4] Univ Pittsburgh, Dept Bioengn, Pittsburgh, PA 15213 USA

[5] Univ Pittsburgh, McGowan Inst Regenerat Med, Pittsburgh, PA 15213 USA

来源：

2014 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2014年

关键词：

beamfonning; apodization; thennal strain imaging; multi-foci; linear array; Verasonics; TRACKING; TISSUE; FIELDS;

D O I：

10.1109/ULTSYM.2014.0418

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Ultrasound-induced thermal strain imaging (TSI) using separate heating and imaging transducers has been used to successfully identify lipids and water-based tissues in atherosclerosis plaques. However it 1) has a limited field of view due to a narrow heating beam, 2) requires physically aligning heating and imaging beams, and 3) results in a bulky setup that limits in vivo operation. This study proposes and evaluates a new design for heating beams that can be implemented on a linear array imaging transducer with improved heating area and efficiency as compared to previous implementations. The designed heating beams were implemented with a L7-4 linear array transducer connected to a commercial ultrasound platform (Verasonics). The experiment and simulation results showed that the new design resulted in an effective heating area of approximately 1 cm lateral x 1 cm axial and a heating rate of up to 0.44 degrees C/sec.

引用

页码：1686 / 1689

页数：4

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