A conductivity reconstruction method for nanosecond pulsed electric field-induced thermoacoustic imaging

Abstract

The invention discloses a conductivity reconstruction method for nanosecond pulse electric field-induced thermoacoustic imaging, which belongs to the field of thermoacoustic imaging detection. Electrode A and motor B are used to excite nanosecond pulse voltage signals; the method is induced in the target body in a non-contact manner. Electric field; the target body absorbs Joule heat to generate thermal expansion, and then excites the ultrasonic signal; the ultrasonic signal is received by the ultrasonic probe distributed around the target body through the insulating medium; after the ultrasonic probe receives the signal, the signal is amplified and filtered by the signal processor; by generating Adversarial Networks, Solving Inverse Problems in Thermoacoustic Imaging, and Reconstructing Conductivity Images. It also solves the nonlinear problem and information loss problem when solving the inverse problem, improves the solution accuracy and image reconstruction quality of the inverse problem, and can quickly and accurately realize the conductivity image reconstruction of the target object to be measured.

Description

technical field [0001] The invention belongs to the field of thermoacoustic imaging detection, and in particular relates to a nanosecond pulse electric field-induced conductivity reconstruction method for thermoacoustic imaging that generates an adversarial network. Background technique [0002] The multi-physics field imaging technology combining electromagnetic field and ultrasound, which not only retains the high contrast of electromagnetic field to human tissue conductivity, but also has the high-resolution characteristics of ultrasonic detection, has become a research hotspot. In 2013, Feng at Nanyang Technological University in Singapore proposed the magneto-thermoacoustic imaging method for the first time. The principle is: by applying an alternating magnetic field of the order of MHz to a conductive target, an induced electric field is generated inside the target, which in turn generates Joule heat, excites a thermoelastic ultrasonic signal, and detects the ultrasoni...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that the electrode plate is in direct contact with the target and cannot quickly detect and reconstruct the conductivity image, the present invention provides a nanosecond pulse thermoacoustic imaging method to solve thermoacoustic imaging by generating an adversarial network The inverse problem in , reconstructing the conductivity image

Images