【摘 要】
:
Background, Motivation and Objective Previously, we have devised a new high-frame-rate flow imaging paradigm called color encoded speckle imaging (CESI) that offers, at sub-ms time resolution, duplex
【机 构】
:
Medical Engineering Program, University of Hong Kong, Pokfulam, Hong Kong
论文部分内容阅读
Background, Motivation and Objective Previously, we have devised a new high-frame-rate flow imaging paradigm called color encoded speckle imaging (CESI) that offers, at sub-ms time resolution, duplex rendering of complex flow dynamics via parallel visualization of flow trajectory (flow speckle motion) and flow velocity (Doppler color coding). Although this new method can provide a more intuitive depiction of vascular hemodynamics as compared to color Doppler, its initial demonstration was merely based on offline processing of prebeamformed data acquired from plane wave Tx events, and aliasing is still a nuisance factor to be addressed. In this work, we have sought to pursue system and algorithmic innovations that can enable the live use of CESI with alias-free visualization, so as to translate CESI towards clinical use.
其他文献
目的 探讨血清淀粉样蛋白A(serum amyloid A protein,SSA)水平与帕金森病性痴呆的认知障碍之间的相关关系.方法:严格按照诊断标准入选研究对象49例帕金森病性痴呆(Parkinson disease dementia,PDD)患者,其中男性患者29例,女性20例,采用酶联免疫法检测血清中血清淀粉样蛋白A水平,采用蒙特利尔认知评估量表评估患者的认知功能.结果:PDD患者不同运动
目的:探讨抑郁症患者的健康管理疗效,为其提供心理康复指导。方法:用科学的健康管理方法对X例抑郁症患者进行了有效的健康管理。结果:抑郁症患者在经过健康管理后,症状明显减少。结论:随着社会的发展,人们对个体的心理健康越来越重视,科学有效的健康管理对于抑郁症患者的康复是很有必要的,其疗效也是肯定的。
目的 调查湖南长沙城区原发性高血压(Essential hypertension,EH)患者的中医体质分布特点,为本病的预防及治疗提供理论依据.方法 通过问卷调查,对300例EH患者(病例组)和300例一般人群(对照组)进行中医体质判定,统计并分析两组人群体质分布特点.结果 1.病例组以阴虚质、痰湿质、气虚质为主,与组内其他体质比较,差异有统计学意义(P<0.05).2.EH患者与非EH人群体质类
Background, Motivation and Objective Pb(Zr,Ti)O3 (PZT) is the most widely used for piezoelectric devices, because it has high piezoelectric constants over a wide range of temperature.However, it conta
Background, Motivation and Objective A significant challenge in the realization of endoscope- and catheter-based 3D ultrasound probes is the electrical connection between the imaging system and the tr
Background, Motivation and Objective Microultrasound imaging above 25 MHz is a rich field of research, with applications in intravascular, endoscopic, ocular and skin imaging amongst many.However, the
Background, Motivation and Objective Intravascular photoacoustic (IVPA) imaging can visualize the coronary atherosclerotic plaque composition on the basis of the optical absorption contrast.Our ex viv
Background, Motivation and Objective Simple equivalent circuits for CMUTs are not adequate especially when the devices are part of a large imaging array with crosstalk. Although accurate large signal
Background, Motivation and Objective The number of transmit and receive channels needed to perform real-time 3-D ultrasound imaging can be greatly reduced if row-column addressed 2-D transducer arrays
Background, Motivation and Objective For high performance piezoelectrics, few technology options are currently available. Recent study projected a novel sound pressure sensor using a ferroelectrics-ga