Blood perfusion separation detecting and imaging method for bone surface capillary

Abstract

A blood perfusion separation detecting and imaging method for a bone surface capillary comprises the following steps: programming transmitting and receiving beams meeting the bone surface multimode leakage Lamb wave condition, constructing bone surface multimode leakage Lamb wave microbubble mother wavelets, then achieving mode separation detection of incidence, reflection and multi-mode leakage Lamb wave aliasing RF (Radio Frequency) echo signals by adopting the bone surface multimode leakage Lamb wave microbubble wavelet method, and finally achieving radiography imaging and blood perfusion parameter imaging of the transformation capillary for the bone surface multimode leakage Lamb wave microbubble wavelets. The blood perfusion separation detecting and imaging method can effectively improve the resolution and the radiography tissue ratio and suppress aliasing interference of the bone surface multimode leakage Lamb waves to radiography imaging of the bone surface tissue capillary, thereby achieving great significance on early diagnosis and evaluation of malignant bone tumors.

Description

Technical field [0001] The invention relates to the technical field of ultrasound imaging, in particular to a method for detecting and imaging the blood flow perfusion separation of the microvessels by the bone surface multi-mode leakage Lamb wave microbubble wavelet transform. Background technique [0002] Because the ultrasound imaging method has the advantages of non-radioactive, low price, good real-time performance, and good reproducibility, it has irreplaceable value and significance for the diagnosis and treatment of musculoskeletal system diseases, and provides reliable intervention basis for clinicians, especially for Major malignant diseases such as bone tumors. In view of the fact that many bone surfaces are non-planar, when the ultrasound probe moves and the angle is deflected, the bone surface is often accompanied by the propagation of multi-mode leaky Lamb waves. Due to many limitations, the current research on the dispersion and propagation characteristics of bone...

AI Technical Summary

Problems solved by technology

[0004] Although the rotation and movement of the ultrasound probe will inevitably cause oblique incidence imaging, which can provide clinically obtained multi-slice fine information that cannot be obtained by other imaging equipment, but at the same time the beam excites the bone surface will produce the unique problem of multi-order and multi-mode Lamb wave interference imaging. limit

Moreover, the frequency-thickness product corresponding to the central frequency of the clinical conventional ultrasound probe in the diagnosis of the musculoskeletal system is generally higher than that of simulation or isolated bone surface guided wave research, and the array probe excites bone surface guided wave orders and frequency-variant aliasing are more complicated.

At the same time, conventional contrast-enhanced ultrasound imaging methods still suffer from conventional problems such as low detection sensitivity of microbubbles, low spatial resolution, low CTR, low SNR of TIC, etc.

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