scholarly journals Improvements of Pulse Doppler Gap Filling Algorithms for Portable Medical Ultrasound Imaging System

2012 ◽  
Vol 31 (8) ◽  
pp. 580-589
Author(s):  
MooHo Bae ◽  
Hyung-Jun An
Keyword(s):  
Ultrasound Imaging ◽  
Imaging System ◽  
Medical Ultrasound ◽  
Gap Filling ◽  
Medical Ultrasound Imaging ◽  
Pulse Doppler

scholarly journals Feasibility Study of Improved Patch Group Prior Based Denoising (PGPD) Technique with Medical Ultrasound Imaging System

2017 ◽  
Vol 22 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Seung Hun Kim ◽  
Kanghyen Seo ◽  
Seong Hyeon Kang ◽  
Jong Hun Kim ◽  
Won Ho Choi ◽  
...  
Keyword(s):  
Ultrasound Imaging ◽  
Feasibility Study ◽  
Imaging System ◽  
Medical Ultrasound ◽  
Medical Ultrasound Imaging ◽  
Patch Group

scholarly journals Cross Subaperture Averaging Generalized Sidelobe Canceler Beamforming Applied to Medical Ultrasound Imaging

2021 ◽  
Vol 11 (18) ◽  
pp. 8689
Author(s):  
Jin Yang ◽  
Jiake Li ◽  
Xiaodong Chen ◽  
Jiaqi Xi ◽  
Huaiyu Cai ◽  
...  
Keyword(s):  
Covariance Matrix ◽  
Ultrasound Imaging ◽  
Imaging System ◽  
Synthetic Aperture ◽  
Lateral Resolution ◽  
Accurate Estimation ◽  
Medical Ultrasound ◽  
Matrix Estimation ◽  
Medical Ultrasound Imaging ◽  
Cross Covariance

For adaptive ultrasound imaging, a reliable estimation of the covariance matrix has a decisive influence on the performance of beamformers. In this paper, we propose a new cross subaperture averaging generalized sidelobe canceler approach (GSC-CROSS) for medical ultrasound imaging, which uses the cross-covariance matrix instead of the traditional covariance matrix estimation. By using the more stable and accurate estimation of the covariance matrix, GSC-CROSS performs well in both lateral resolution and contrast. Experiments are conducted based on the simulated echo data of scattering points and a cyst target. Beamforming responses of scattering points show that GSC-CROSS can improve the lateral resolution by 76.9%, 68.8%, and 17.1% compared with delay-and-sum (DS), synthetic aperture (SA), and the traditional generalized sidelobe canceler (GSC), respectively. Also, imaging of the cyst target shows that compared with DS, SA, and GSC, the contrast increases by 101%, 32.6%, and 63.5%, respectively. Finally, the actual echo data collected from a medical ultrasonic imaging system is applied to reconstruct the image. Results show that the proposed method has a good performance on lateral resolution and contrast. Both the simulated and experimental data demonstrate the effectiveness of the proposed method.

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