Opto-acoustic scan imaging method and device for detecting prostate

Abstract

The invention discloses an opto-acoustic scan imaging method and an opto-acoustic scan imaging device for detecting prostate, and relates to an opto-acoustic method for detecting the human prostate. The method comprises the following steps that; an ultrasonic transducer receives an ultrasonic wave signal and transmits the ultrasonic wave signal to a data acquisition card for digitalizing the signal, and the data acquisition card transmits the digitalized data to a computer for imaging. The method is characterized in that: an optical fiber of which the front end part is a soft diffuse optical fiber enters the prostate part through human urethra, and the laser of a laser generator is transmitted via the optical fiber, and is emitted in the radial direction of the circumference and on the end surface of the prostate through the soft diffuse optical fiber to perform light irradiation on the inner wall of the prostate. The invention has the advantages that: the multi-mode end part diffuse optical fiber is adopted to transmit the multi-wave length laser, and the optical fiber end part emits the diffuse laser in the radial direction of the circumference and the end surface. After the optical fiber enters the prostate part via the urethra, the optical fiber can realize uniform laser irradiation on each part of the prostate in all dimensions simultaneously. The immersion type long lens area ultrasonic transducer is placed inside rectum for detecting the opto-acoustic signal formed in the prostate, and the resolution is high.

Description

Technical field: [0001] The invention relates to a human prostate photoacoustic detection method, in particular to a prostate photoacoustic scanning imaging detection method and device. Background technique: [0002] Now the prostate detection methods are mainly: digital rectal examination combined with serum PSA examination, and B-ultrasound examination of rectal prostate if necessary. Digital rectal examination means that the doctor uses fingers to touch the patient's prostate through the anus, and judges whether there are hard nodules in the prostate through the feeling of the fingertips. Only 25% of prostate cancer can be detected. Serum PSA is known as a prostate cancer-specific tumor indicator. Generally, the PSA value greater than 4ng / ml is used as the cut-off value for prostate screening. However, an elevated PSA value does not necessarily mean that you will suffer from prostate cancer, because benign hyperplasia, acute and chronic prostatitis, Digital rectal examin...

AI Technical Summary

Problems solved by technology

However, when the array ultrasonic transducer is used for signal acquisition in the body, it can only scan at a limited angle, and it is difficult to obtain complete imaging data. Therefore, it is easily affected by the algorithm and has a great impact on the imaging accuracy.

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