Photoacoustic imaging probe and photoacoustic imaging system

Abstract

The invention discloses a photoacoustic imaging probe and a photoacoustic imaging system. The probe comprises a shell, a laser input unit and an optical fiber ultrasonic sensing unit, wherein the laser input unit and the optical fiber ultrasonic sensing unit are arranged in the shell in parallel; the laser input unit comprises an input optical fiber, a focusing unit and a reflecting unit and is used for emitting focused laser to provide excitation light; the optical fiber ultrasonic sensing unit comprises a sensing optical fiber; and the sensing optical fiber comprises receiving areas of a first grating and a second grating formed at intervals. According to the photoacoustic probe disclosed by the invention, focusing concave mirrors are formed on the surfaces of the receiving areas of thesensing optical fiber, so that sensitivity and imaging definition of the probe are obviously improved. Furthermore, sensitivity of the probe provided by the invention is improved, so that used laser excitation power is greatly reduced, overall cost of an endoscopic imaging detection system is reduced, and use safety is improved.

Description

technical field [0001] The invention relates to the field of photoacoustic imaging. Specifically, the present invention relates to a photoacoustic imaging probe and a photoacoustic imaging system. Background technique [0002] In recent years, the morbidity and mortality of gastrointestinal tumors and cardiovascular diseases in my country have shown a continuous upward trend. Early detection and early diagnosis have become the key factors to improve the survival rate of patients. As an important medical device, the endoscope plays an irreplaceable role in the observation and treatment process. Although intestinal and intravascular endoscopic imaging have been applied clinically, such imaging techniques have low contrast and are difficult to achieve functional imaging. For example, they cannot fully reflect the composition of plaques and cannot provide blood oxygen in intestinal vessels. information etc. [0003] Photoacoustic imaging is a new non-invasive medical imaging ...

AI Technical Summary

Problems solved by technology

Although intestinal and intravascular endoscopic imaging have been applied clinically, such imaging techniques have low contrast and are difficult to achieve functional imaging. For example, they cannot fully reflect the composition of plaques and cannot provide blood oxygen in intestinal vessels. information etc.

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