2012年Science上最新的关于光声成像的综述,非常不错
2024-03-27 15:11:26 1.11MB 光声成像
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光声成像 MATLAB k-Wave
2023-03-15 17:09:44 6.98MB 声学模型与模式匹配
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光声成像技术的重建算法与实验研究,天津大学博士学位论文
2022-11-21 12:06:49 4.63MB 光声成像
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利用光声相关谱法对血液流速进行了测量,并研究了激光重复频率以及血流方向与入射激光传播方向的夹角对血液流速测量准确性的影响。结果表明:血流速度越快,要求激光的重复频率越高;当血流方向与入射激光的传播方向垂直时,系统可以测量的血液流速范围为0.059~92.3 mm/s,测量值与真实值的相关系数为0.992;当血流方向与入射激光的传播方向不垂直时,测得的血液流速和实际血液流速的比值与样品倾斜角度成余弦关系。
2022-04-14 16:44:04 7.37MB 医用光学 光声成像 光声相关 流速测量
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光声成像中延迟求和方法和反投影重构方法的比较,吴丹,陶超,生物组织的光声成像具有高空间分辨率与高对比度的优点,已经成为当前生物医学成像研究的热点课题。目前,延迟求和法和反投影重构
2021-12-18 23:23:22 1.27MB 首发论文
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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。
2021-12-04 14:03:38 1.75MB 医学影像 光声成像 肿瘤检测 脑功能监
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用于仿真光声场传播,重建,图像重建,以及超声场的传播
2021-11-26 10:00:43 3.44MB 光传播 光声成像仿真 wave
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
2021-10-19 15:44:09 481KB 光声成像
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用于光声成像的基于光纤激光的超声传感器
2021-07-28 15:10:02 1.74MB 研究论文
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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.
2021-07-15 11:50:16 44.09MB 光声成像 photoacoustic
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