Ultrasonic detection device and medical imaging system

Abstract

The invention discloses an ultrasonic detection device and a medical imaging system. The ultrasonic detection device comprises an ultrasonic transducer and a container for accommodating the ultrasonictransducer, the interior of the container is filled with an ultrasonic coupling agent, and the working surface of the container is provided with an opening; a transparent flexible film is laid on thesurface of the opening, the flexible film responds to the pressure difference between the two sides of the flexible film and is evenly stretched in the direction close to the ultrasonic transducer, aconcave cavity capable of containing a detected part of a human body is generated, and the depth of the concave cavity can be adjusted so as to be matched with detected parts of different sizes. According to the invention, the flexible film is uniformly stretched by adopting pressure control, the thickness of the flexible film is gradually reduced in the stretching process, the thickness of the stretched flexible film is uniform, and the imaging effect is not influenced by non-negligible attenuation on illumination or sound signals; the flexible film effectively isolates the ultrasonic coupling agent and the examined part in the container, the ultrasonic coupling agent does not need to be replaced for different patients, and cross infection between different examinees cannot be caused.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic imaging, and more particularly relates to an ultrasonic detection device and a medical imaging system, which are suitable for photoacoustic tomography and ultrasonic tomography of raised parts of a human body. Background technique [0002] Ultrasonic imaging methods (including ultrasonic imaging and photoacoustic imaging, etc.) have become an important means of medical diagnosis, and ultrasonic detection depends on receiving ultrasonic signals with ultrasonic transducers. When ultrasonic waves are incident on the interface between two different media, the greater the difference in acoustic impedance between the two, the greater the reflection coefficient, and the less energy the ultrasonic waves will pass through the interface into another medium. If there is an air gap between the ultrasonic transducer and the tested part, or direct "dry contact", the air layer between the ultrasonic probe and...

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Problems solved by technology

[0004] Aiming at at least one defect or improvement requirement of the prior art, the present invention provides an ultrasonic detection device and a medical imaging system, in which a flexible film is laid on the surface of the opening of a container containing an ultrasonic transducer, and on both sides of the flexible film Create a pressure differential to uniformly stretch the flexible film to deform it, creating a concave cavity that can accommodate the part of the human body to be examined, so that the part to be tested can be penetrated enough into the container filled with ultrasonic couplant to allow the ultrasonic transducer to receive The photoacoustic or ultrasonic signal of the inspected part; the flexible film not only effectively isolates the ultrasonic coupling agent in the container and the inspected part, but most importantly, the thickness of the flexible film gradually becomes thinner during the stretching process, and the flexible film is subjected to The pressure difference is uniform in all directions, so the thickness of the stretched flexible film is uniform, and the imaging effect will not be affected by the uneven attenuation of the signal; the purpose is to solve the existing ultrasonic detection device that is easy to cause different Problems with cross-infection between subjects and contamination of ultrasound transducers

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