光声医学成像技术进展，殷杰，陶超，光声成像是21世纪以来兴起的一种生物医学成像技术，它是一种低功率、非电离的成像方式，既具有声学方法对深层组织成像分辨率高的�

简要介绍了光声成像技术的基本原理，采集系统和成像算法。重点阐述了光声成像技术在肿瘤的早期检测和疗效监测，脑成像和脑功能监测以及临床血管监测等生物医学领域的应用。对光声成像技术应用前景进行了展望。

用于仿真光声场传播，重建，图像重建，以及超声场的传播

光声成像（Photoacoustic imaging）是一种新型的混合成像技术，利用检测 超短脉冲激光束所激发出来的超声信号重建图像进而揭示病变组织的内部信息

使用蒙特卡洛的方法来模拟光声成像的过程 ，反应光子的运动，对于出蹙额蒙特卡罗有很好的启发和借鉴意义，

行业分类-物理装置-一种平行入射的红外热辐射光声光谱气体传感装置.zip

用于光声成像的基于光纤激光的超声传感器

在基于光声光谱技术的痕量气体检测系统中,光声池是决定系统性能的关键部件。针对传统柱形光声池受限于形状优化参数的问题,本文提出并设计了一种母线为双曲线的曲体束腰型光声池方案,该方案创新性地引入了母线离心率参数,实现了三维立体优化。本文基于有限元分析方法,利用COMSOL软件构建模型,分析母线离心率为7.14的光声池结构,得到了该结构在热黏性损耗作用下的前八阶声学模态值以及可视化振型。仿真结果表明,所设计的光声池的品质因数高达83.3;对光声池进行形状优化,发现光声池谐振腔长度对谐振频率敏感,母线短半轴长对声压幅值敏感。通过调节母线离心率可以有效地调节谐振频率且不影响声压幅值。光声池的幅频响应特性表明,较小的离心率易激发多谐振峰,在离心率为5时,激发的第一、第二谐振峰较强,它们的品质因数分别为75.9和128.9。本研究表明,此类曲体束腰型光声池具有优良的性能及较高的可设计度,对新型光声检测技术具备多场景适应能力,具有重要的理论和工程应用价值。

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