Thermo-acoustic tomography system and method for finger joint disease diagnosis

Abstract

The invention relates to a thermo-acoustic tomography system and method for finger joint disease diagnosis, and belongs to the technical field of thermo-acoustic imaging. The thermo-acoustic tomography system comprises a system supporting module, a finger fixing module, a microwave producing and transporting module and a signal receiving and image reconstructing module, wherein the microwave producing / transporting module is used for providing a waveguide H surface T-shaped junction and a coaxial waveguide adapter, so that the key to anti-phase microwave irradiation is realized, and correctingthe deterioration of a picture field dependence contrast is facilitated; the system supporting module enables only the finger to be imaged to be immersed in the oil, so that the acceptance degree of an examinee is strengthened, and the exhaustion sense of the examinee is alleviated; an imaging system is suitable for finger joints of different dimensions through the finger fixing module, so that the clinical pilot evaluation of ill-conditioned finger joints of the human body is completed; and preliminary assessment result of rheumatoid arthritis / psoriatic arthritis indicates that the ill-conditioned joints can be obviously distinguished from normal joints, and different ill-conditioned joints can be obviously distinguished from each other.

Description

technical field [0001] The invention relates to a thermoacoustic tomography system and method for diagnosing finger joint diseases, and belongs to the technical field of thermoacoustic imaging. Background technique [0002] Joint disease is the leading cause of disability in people over the age of 50, with impacts including limited mobility, barriers to employment, reduced quality of life, and increased healthcare costs. Early diagnosis of joint diseases is very important. If the disease is not detected early and the treatment is delayed, the disease will progress to bone destruction and the process of disability will be irreversible. Long-term condition monitoring and curative effect monitoring of joint diseases are also very important for three reasons: first, the disease develops slowly, such as osteoarthritis, and the condition lasts for more than ten years or even decades; second, the disease recurs, such as rheumatoid Arthritis, even if it is considered cured, can fla...

AI Technical Summary

Problems solved by technology

[0005] However, limitations of this study limited the clinical pilot evaluation of thermoacoustic tomography for the diagnosis of finger joint disease

There are three limitations: first, the microwave energy distribution in the joint is uneven, and the image contrast deteriorates, which is useful for thermoacoustic tomography to detect small lesions (early disease, some lesions with low contrast relative to the surrounding environment and some lesions with small size) exist Second, during the data collection process, almost the whole hand and most of the arms are immersed in oil (coupling medium), and the subject accepts low and is prone to fatigue; third, the finger fixing bracket is not adjustable, Each subject needs a set of special finger fixing brackets due to different finger sizes, which cannot be achieved in clinical pilot evaluation experiments

However, the key to using waveguide H-plane T-junctions and coaxial waveguide adapters to achieve reverse-phase microwave irradiation is not mentioned in this study; how to ensure that only the imaged finger needs to be immersed in oil is not addressed; how to obtain Adjustable finger support brackets to accommodate different sized finger joints for clinical pilot evaluation

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