The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging

The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging

Bibliographic Details
Main Author: Chen, Hong
Language:English
Published: University of Toledo / OhioLINK 2012
Subjects:
Biomedical Engineering
HFR
SR
ER
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333566638
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-toledo13335666382021-08-03T06:08:03Z The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging Chen, Hong Biomedical Engineering HFR SR ER The high frame rate imaging method is expected to be a leading technology of ultrasound imaging in the future. In this dissertation, the high frame rate imaging method is further studied, and the applications of the high frame rate imaging method are explored. To achieve the real-time 3D ultrasound imaging with a full 2D ultrasound transducer in a high frame rate imaging system, a new model of an ultrasound probe is proposed using the data compression technique. Raw echo data is first compressed by the JPEG algorithm, and then transferred to the image processing system with a reasonable number of wires in the cable connecting an ultrasound probe and the image processing system. The results show that the quality of the image after the JPEG data compression technique is still close to the image before the data compression. In addition, the effects of phase aberration and noise on the high frame rate imaging method is quantitatively studied. The parameters of energy ratio and sidelobe ratio are proposed and combined with the traditional -6-dB lateral resolution to analyze the image quality over the entire imaging area. The results show that the high frame rate imaging method has higher lateralresolution than the D&S imaging method, and the high frame imaging method is influenced less by the phase aberration and noise than the D&S imaging method. The results also indicate that the proposed parameters of energy ratio and sidelobe ratio could potentially be used for the correction of phase aberration. Finally, the high frame rate imaging method is applied to the strain and strain rate imaging of soft tissues. The two dimensional speckle tracking technique is used to measure the values of strain and strain rate. In the speckle tracking technique, the algorithm of the summation of absolute difference is used to search matched blocks between two consecutive images. Both simulation and experimentation studies were conducted to verify the method of applying the high frame rate imaging method to estimate the strain and strain rate. It is found that the high frame rate imaging method can be used to accurately measure the strain and strain rate. Considering the long computation time of speckle tracking, a new kernel using two crossing diagonal lines is proposed. The results of the preliminary study show that it is possible for the new kernel to reduce the computation time while retaining the accuracy of the estimation of strain and strain rate various imaging methods. 2012-06-26 English text University of Toledo / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333566638 http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333566638 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Biomedical Engineering
HFR
SR
ER
spellingShingle Biomedical Engineering
HFR
SR
ER
Chen, Hong
The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
author Chen, Hong
author_facet Chen, Hong
author_sort Chen, Hong
title The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
title_short The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
title_full The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
title_fullStr The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
title_full_unstemmed The Study of the High Frame Rate Imaging Method and Its Application to the Strain and Strain Rate Imaging
title_sort study of the high frame rate imaging method and its application to the strain and strain rate imaging
publisher University of Toledo / OhioLINK
publishDate 2012
url http://rave.ohiolink.edu/etdc/view?acc_num=toledo1333566638
work_keys_str_mv AT chenhong thestudyofthehighframerateimagingmethodanditsapplicationtothestrainandstrainrateimaging
AT chenhong studyofthehighframerateimagingmethodanditsapplicationtothestrainandstrainrateimaging
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