Ultrasonic low-frequency transcranial volume super-resolution radiographic imaging method and system

Abstract

The invention provides an ultrasonic low-frequency transcranial volume super-resolution radiographic imaging method and system. The volume imaging technique is applied to the field of transcranial angiography; a two-dimensional plane transducer emits ultrasonic plane wave into the skull; scanning is performed in two directions perpendicular to each other; scanned images are subjected to transcranial vascular small-region three-dimensional super-resolution imaging by means of a voxel nearest neighbors process and a multi-objective tracking algorithm based on Markov chain Monte Carlo so as to obtain real-time high-resolution three-dimensional imaging for cranial internal structure.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic detection and ultrasonic imaging, and in particular relates to an ultrasonic two-dimensional planar transducer array and a transcranial low-frequency super-resolution volume three-dimensional imaging method. Background technique [0002] At present, the main means of ultrasonic monitoring in the skull is the transcranial Doppler technology, which uses the frequency shift information of the echo signal to deduce the relative motion between the ultrasonic source and the scattering or reflecting target, and is used to detect the main components of the brain base. Arterial hemodynamics and blood flow physiological parameters. However, transcranial Doppler technology can only display two-dimensional information of vascular blood flow. [0003] Compared with traditional transcranial 2D imaging technology, transcranial 3D imaging technology has many advantages: firstly, 3D imaging is more intuitive a...

AI Technical Summary

Problems solved by technology

[0004] Three-dimensional ultrasound imaging is also called ultrasound volume imaging. According to different acquisition methods of ultrasound three-dimensional volume data, it can be divided into two types: one is static imaging, that is, the two-dimensional signal of the space section is obtained by scanning the mechanically controlled probe, and then the two-dimensional The signal is reconstructed in space to obtain a three-dimensional image. This method has high resolution, but to a certain extent, time information is lost, and an accurate positioning system is required; the second is dynamic imaging, that is, volume imaging technology, which uses area array volume probes Emitting spatial ultrasonic beams to directly obtain 3D ultrasonic volume data, not only has all the functions of a 2D color Doppler ultrasound transducer, but also has the functions of stereoscopic imaging, image cutting, image rotation and high-level image analysis

These factors make this technology face many problems in clinical use

Based on the super-resolution optical wave imaging method, the research team of the Department of Biomedical Engineering of the Israel Institute of Technology has developed a combined microbubble ultrasonic super-resolution imaging method that can be used for high concentrations and low acquisition time, but its resolution is lower than that of single microbubbles. The tracking method has significant limitations and is not suitable for velocity imaging of microbubbles / blood flow

More importantly, these technologies are all for two-dimensional imaging, but for ultrasound transcranial volume three-dimensional imaging, there is no clear super-resolution imaging technology

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