Real-time acousto-optic imaging method and device based on acoustic lens and laminated reflective film inspection

A multi-layer reflection, photoacoustic imaging technology, applied in ultrasonic/acoustic/infrasonic diagnosis, sonic diagnosis, infrasonic diagnosis, etc., can solve the problem of long time required, inability to monitor tissue changes in real time, etc., and achieve non-destructive sensitivity. Effect
CN101028185AInactive Publication Date: 2007-09-05SOUTH CHINA NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA NORMAL UNIVERSITY
Publication Date
2007-09-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

A real-time optico-acoustic imaging method based on acoustic lens and reflecting film detection is disclosed. The acoustic lens is used to generate the acoustic pressure distribution of biologic tissue duto optico-acoustic effect and couple it to an imaging plane for directly imaging on it. A multi-layer reflecting film is used to convert said acoustic pressure distribution to light intensity distribution, which is recorded by CCD to obtain a clear image of a tissue layer. Its apparatus is composed of transparent flexible rubber layer, optical fiber, acoustic lens, two lasers, sound-transmission opaque material, multi-layer reflecting film, CCD, computer, and cylindrical cavity made of aluminum.
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Description

technical field

[0001] The invention relates to photoacoustic imaging technology, in particular to a real-time photoacoustic imaging method based on acoustic lens and multilayer reflective film detection.

[0002] The invention also relates to devices used in said method. Background technique

[0003] Optoacoustic tomography (Optoacoustic tomography) is an effective medical imaging technique for detecting light absorption distribution inside strongly scattering media (such as biological tissue), which has the advantages of high contrast of optical imaging and high penetration of ultrasonic imaging. For example, when a short pulse laser (nanosecond level) is used to irradiate biological tissue, the biological tissue undergoes thermoelastic expansion due to the slight rise in the temperature of the absorbed light energy, generating ultrasound, and the ultrasonic signal is proportional to the light absorption of the biological tissue, so photoacoustic The signal carries the in...

Claims

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