Background:
This study is carried out targeting the problem of slow response time and
performance degradation of imaging system caused by large data of medical ultrasonic imaging.
In view of the advantages of CS, it is applied to medical ultrasonic imaging to solve the above
problems.
Objective:
Under the condition of satisfying the speed of ultrasound imaging, the quality of imaging
can be further improved to provide the basis for accurate medical diagnosis.
Methods:
According to CS theory and the characteristics of the array ultrasonic imaging system,
block compressed sensing ultrasonic imaging algorithm is proposed based on wavelet sparse representation.
Results:
Three kinds of observation matrices have been designed on the basis of the proposed algorithm,
which can be selected to reduce the number of the linear array channels and the complexity
of the ultrasonic imaging system to some extent.
Conclusion:
The corresponding simulation program is designed, and the result shows that this algorithm
can greatly reduce the total data amount required by imaging and the number of data
channels required for linear array transducer to receive data. The imaging effect has been greatly
improved compared with that of the spatial frequency domain sparse algorithm.
The comparison of Size-Specific Dose Estimate (SSDE) in chest CT examination calculated based on volumetric CT Dose Index (CTDIvol) reference phantom and Dose Length Product (DLP)