Ultrasonic ghost imaging method and device based on principle of calorescence ghost imaging

Abstract

The invention provides an ultrasonic ghost imaging method and device based on the principle of lens-free calorescence ghost imaging, which belongs to the field of target imaging detection. Ultrasonic wave emitted by an ultrasonic emission source is divided into two beams through an acoustic beam splitter. The ultrasonic wave transmitted through an object to be imaged is received by an ultrasonic wave barrel detector. An ultrasonic CCD detector is used to receive an ultrasonic beam emitted by the ultrasonic emission source. A correlator is used to calculate the second order correlation function of the ultrasonic sound intensity detected by two ultrasonic detectors. Coincidence measurement is carried out on two ultrasonic signals to acquire the image of the object to be imaged. According to the invention, the ultrasonic wave is introduced into ghost imaging as a wave source; a new ultrasonic ghost imaging method is realized; the imaging method has a great anti-perturbation characteristic; and compared with traditional ultrasonic imaging, the imaging method can realize lensless imaging, and has the advantages of high resolution, high image quality and the like.

Description

technical field [0001] The invention belongs to the field of target imaging detection, relates to imaging an object by using the principle of ghost imaging, and in particular relates to an ultrasonic ghost imaging method and device based on the principle of thermal-light ghost imaging. Background technique [0002] Since the discovery of X-rays by German physicist Wilhelm Konrad Roentgen in 1895 paved the way for medical imaging technology, medical ultrasound imaging, computerized tomography, magnetic resonance imaging, digital subtraction angiography and emission Medical imaging technologies such as tomography have gradually emerged and matured. Among them, medical ultrasound imaging has been applied to the heart, great blood vessels and the Display and measurement of the gallbladder. Traditional medical ultrasound imaging is to use piezoelectric materials with piezoelectric effect to make ultrasound probes to realize the conversion of voltage and acoustic vibration. Acc...

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Problems solved by technology

The problem with the above-mentioned traditional medical ultrasound imaging technology is that the small structures in human organs scatter the incident ultrasound, causing part of the energy of the incident ultrasound to scatter in various spatial directions, and the energy returned to the ultrasound probe is too low to form a clear human body. Tissue and organ images; ultrasound artifacts due to reverberation effects, mirror effects, rear wall enhancement effects, side lobe effects, and pa...

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