A transcranial shear wave brain tissue viscoelastic imaging device

Abstract

A transcranial shear wave brain tissue viscoelastic imaging device disclosed in the present invention comprises a transcranial vibration generating device, an ultrasonic generator, a vibrating rod, a monitoring device, an adjusting device and a shock-absorbing bracket; Transcranial shear wave brain tissue viscoelasticity detection has been realized. Secondly, the adjusting device is used to adjust the vibration exciter, the vibrating rod and the flexible plate to the horizontal state, control the vertical propagation of the shear wave, and quantitatively and accurately control the generation and propagation of the shear wave, so that the shear wave propagation can be parallel to each Ultrasonic scanning lines, and then the shear wave velocity of each scanning line is accurate, and two-dimensional shear wave viscoelastic imaging is performed, which solves the problem that the traditional external excitation vibration can only obtain the average shear wave velocity along the central axis ultrasonic scanning line .

Description

technical field [0001] The invention relates to the technical field of medical ultrasonic imaging, in particular to a transcranial shear wave brain tissue viscoelastic imaging device. Background technique [0002] The viscoelasticity and other mechanical properties of brain tissue are of great value to the pathological research of related diseases. Early diagnosis of diseases such as Alzheimer's disease and hydrocephalus can be realized through the detection of brain tissue viscoelasticity. At present, most studies on the elastic characteristics of brain tissue choose to use magnetic resonance technology, that is, magnetic resonance elastography (MRE), but this technology inevitably has limitations such as complicated operation, high cost, and slow imaging speed. [0003] In comparison, in recent years, ultrasonic shear wave elastography (SWE) has developed rapidly, which solves the above limitations in principle and has stronger practicability. At present, ultrasonic shear...

AI Technical Summary

Problems solved by technology

However, due to limiting factors such as inconsistent skull density, uneven thickness, irregular shape, and large sound attenuation coefficient, the traditional shear wave generator based on externally excited vibration cannot ensure that the shear wave in the appropriate parameter range can be generated regularly. Transcranial ultrasonic shear wave brain tissue viscoelastic imaging cannot guarantee the necessary prerequisites

[0006] However, the ultrasonic shear wave viscoelastic imaging technology based on the acoustic radiation force must directly act on the biological tissue with focused ultrasound. This technique has the limitation of difficulty in focusing under transcranial conditions and the safety of high-power focused ultrasound on brain tissue. Sexuality remains unclear

These limit the application of ultrasonic shear wave elastography based on acoustic radiation force in transcranial conditions

[0007] In summary, the existing viscoelastic imaging technology still has great limitations for the early diagnosis and pathological research of transcranial brain tissue. The development of a safe and effective transcranial ultrasonic shear wave brain tissue viscoelastic imaging device is particularly important important

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