行业分类-电信-一种基于脉冲编码的磁声成像信号处理装置及处理方法.rar

用于光声成像的基于光纤激光的超声传感器

Photoacoustic tomography (PAT) is an emerging biomedical imaging modality that combines the high-contrast and spectroscopic-based specificity of optical imaging with the high spatial resolution of ultrasound imaging in a single modality. By listening to light, PAT detects tissue-absorbed photons ultrasonically through the photoacoustic effect. Since ultrasonic scattering is two to three orders of magnitude weaker than optical scattering in tissue, PAT breaks the 2–4 mm spatial resolution limit associated with pure optical tomography such as diffuse optical tomography (DOT) for deep tissue imaging, or the ~1 mm depth limit associated with confocal and multiphoton microscopy and optical coherent tomography (OCT). In PAT, tissue is excited with a short (typically a few nanoseconds) laser pulse (focused or unfocused); the subsequent laser-induced transient photoacoustic waves in the range of 1–100 MHz, due to the transient thermoelastic expansion of light-absorbing components in tissue, are detected by wideband unfocused or focused ultrasound transducer(s). Unique advantages of PAT are that functional or biochemical parameters such as deoxy-hemoglobin (HbR), oxy-hemoglobin (HbO2), water (H2O), lipids, and so forth along with vasculature and blood flow can be imaged in high resolution. In addition, highly specific molecular PAT can be realized through the use of molecular contrast agents. Finally, PAT can be made portable for bedside applications, is economical, and uses non-ionization radiation.

1.7微米波长可调谐增益开关光纤激光器及其在光谱光声成像中的应用.pdf

基于光声成像的生物组织微结构定征研究进展_张涛.pdf

本程序利用K-wave实现了用一维线性阵列探测器采集到的光声信号数据完成2维光声图像重建

基于有限元的光声成像算法研究，研究光声成像原理并用相关软件加以仿真

基于均匀面阵的聚焦多波束声成像matlab程序 仅供入门学习参考

该程序通过蒙特卡洛模拟光声成像的过程 ，能够反应光子的运动。