集成技术Issue(3)：79-85,7.
基于超声平面波的功率多普勒成像方法研究
Study of Power Doppler Imaging Method with Ultrasonic Plane Wave
摘要
Abstract
Emitting plane wave makes ultrasonic imaging enough fast so that it could detect variable blood signal in body, hence it becomes one of the most popular research interest. A new algorithm, multi-angle plane wave coherent compound imaging (MPWCCI) was realized to suppress side-lobe signal, improving the quality of ultrasonic image. Trading off frame rate and signal-noise-ratio (SNR), it could be used to image blood Power Doppler (PD). The contrast of B mode image could be up to 40 dB, and the frame rate to 1000Hz, using more than ten plane waves to compound. Test was accomplished in the slow-lfow blood phantom, it shows that clutter signal could be eliminated and blood signal could be extracted effectively, and ifnally an image depicting hemodynamics was obtained. Result veriifes that MPWCCI-PD has a ifne sensitivity to slow lfow. Furthermore, the effect of the ensemble size on image quality and temporal resolution was discussed. Calculating blood PDs in varying ensemble size data reveals that its frame rate exceeds that of conventional PD imaging, up to tens of Hertz, and the shorter the ensemble images are, the higher the temporal resolution and the better image, and vice versa. Higher temporal resolution is conducive to detecting fast blood lfow and better sensitivity is good for the detection of small vessels. MPWCCI-PD may be helpful to imaging cases caused by angiocardiopathy, or brain small vessels.关键词
平面波/相干复合/血流/功率多普勒/时间分辨率Key words
plane wave/coherent compound/blood/power Doppler/temporal resolution分类
医药卫生引用本文复制引用
叶为镪,郭宁,王丛知,黎国锋,徐长喜,梁柳嫦,邱维宝..基于超声平面波的功率多普勒成像方法研究[J].集成技术,2015,(3):79-85,7.基金项目
国家自然科学基金(61302038)；国家基础研究973项目(2015CB755500)；广东省创新创业研究团队(2013S046)；广东省自然科学基金；深圳市孔雀计划(20130409162728468)；深圳市国际合作项目(GJHZ20140417113430615)；深圳市科学基金(JCYJ20140610151856707) （61302038）
