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Medical Imaging Techniques Combining Light and Ultrasound

机译:光与超声相结合的医学成像技术

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摘要

The combination of light and ultrasound can lead to new medical imaging techniques combining the spectroscopic capability of light with the spatial resolution of ultrasound. Spectroscopy can be used to measure blood volume and blood oxygen, but because most biological tissues are highly scattering at optical wavelengths, spatial resolution is poor. Ultrasound provides excellent resolution, but not good soft-tissue contrast. There are many techniques for combining light and ultrasound, but the two discussed in this paper have emerged as having the most promise for medical applications. In the first, optoacoustic imaging, an acoustic pulse is generated by a pulse of laser light, and the detected sound is used to produce an image. In the second, acousto-photonic imaging, ultrasound modulates laser light used for diffusive optical tomography. Both of these techniques show promise for a variety of medical applications.
机译:光和超声的结合可以导致将光的光谱能力与超声的空间分辨率结合起来的新的医学成像技术。光谱法可用于测量血容量和血氧含量,但是由于大多数生物组织在光波长下的散射很高,因此空间分辨率很差。超声具有出色的分辨率,但软组织对比度却不佳。结合了光和超声的技术很多,但是本文讨论的两种技术已被证明对医疗应用最有希望。在第一声光成像中,通过激光脉冲产生声脉冲,并且将检测到的声音用于产生图像。在第二次声光成像中,超声调制用于扩散光学层析成像的激光。这两种技术都显示出可用于各种医疗应用的前景。

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