scholarly journals Non-Fourier-encoded parallel MRI using multiple receiver coils

2004 ◽  
Vol 52 (2) ◽  
pp. 321-328 ◽  
Author(s):  
Dimitris Mitsouras ◽  
W. Scott Hoge ◽  
Frank J. Rybicki ◽  
Walid E. Kyriakos ◽  
Alan Edelman ◽  
...  
Keyword(s):  
Parallel Mri ◽  
Multiple Receiver

FPGA-Based Pipelined Architecture for Real-Time Estimation of Sensitivity Maps Using Pre-Scan Method in Parallel MRI

2019 ◽  
Vol 29 (08) ◽  
pp. 2050125
Author(s):  
Tooba Khan ◽  
Muhammad Faisal Siddiqui ◽  
Hammad Omer
Keyword(s):  
Image Reconstruction ◽  
Real Time ◽  
Spatial Information ◽  
Time Estimation ◽  
Receiver Coil ◽  
Sampled Data ◽  
Parallel Mri ◽  
Pipelined Architecture ◽  
Multiple Receiver ◽  
Sensitivity Maps

Parallel MRI (pMRI) is a widely used technique for increasing the MRI acquisition speed, by using multiple receiver coils with spatially discriminated sensitivities. Sensitivity encoding (SENSE) is a parallel MRI technique used for reconstructing the aliasing free images from the under-sampled MRI data using the spatial information obtained from multiple receiver coils. Precise receiver coil sensitivity estimation is critical for the correct image reconstruction from the under-sampled data in SENSE. Pre-scan method is a quick and conventionally used method for correct estimation of the receiver coil sensitivities, to be used in SENSE. In this work, an application-specific hardware implemented on FPGA (Field Programmable Gate Array) for real-time sensitivity maps estimation using the pre-scan method is proposed. The proposed architecture has the potential to be installed on the receiver coil data acquisition system, which would provide sensitivity maps for image reconstruction, without moving the raw data to the MRI workstation. Parallelism is utilized in the proposed pipelined architecture to make it even faster. From the experimental results, it is shown that the proposed architecture estimates the sensitivity maps in only 1.466[Formula: see text]ms for eight receiver coils. Furthermore, high mean SNR (30[Formula: see text][Formula: see text]dB), low root-mean-square-error ([Formula: see text]) and low artifact power ([Formula: see text]) are achieved for the under-sampled human head, cardiac and phantom data sets (acceleration factor = 2), reconstructed with SENSE algorithm utilizing the sensitivity maps estimated by the proposed architecture.

scholarly journals A guaranteed convergence analysis for the projected fast iterative soft-thresholding algorithm in parallel MRI

2021 ◽  
Vol 69 ◽  
pp. 101987
Author(s):  
Xinlin Zhang ◽  
Hengfa Lu ◽  
Di Guo ◽  
Lijun Bao ◽  
Feng Huang ◽  
...  
Keyword(s):  
Convergence Analysis ◽  
Parallel Mri ◽  
Soft Thresholding ◽  
Thresholding Algorithm ◽  
Iterative Soft Thresholding

scholarly journals Systematic evaluation of iterative deep neural networks for fast parallel MRI reconstruction with sensitivity‐weighted coil combination

2021 ◽  
Author(s):  
Kerstin Hammernik ◽  
Jo Schlemper ◽  
Chen Qin ◽  
Jinming Duan ◽  
Ronald M. Summers ◽  
...  
Keyword(s):  
Neural Networks ◽  
Deep Neural Networks ◽  
Systematic Evaluation ◽  
Parallel Mri ◽  
Mri Reconstruction ◽  
Parallel Mri Reconstruction

scholarly journals CZT Algorithm for Multiple-Receiver Synthetic Aperture Sonar

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 1902-1909
Author(s):  
Mengbo Ma ◽  
Jinsong Tang ◽  
Heping Zhong
Keyword(s):  
Synthetic Aperture ◽  
Synthetic Aperture Sonar ◽  
Multiple Receiver

scholarly journals POCS-enhanced correction of motion artifacts in parallel MRI

2010 ◽  
Vol 63 (4) ◽  
pp. 1104-1110 ◽  
Author(s):  
Alexey A. Samsonov ◽  
Julia Velikina ◽  
Youngkyoo Jung ◽  
Eugene G. Kholmovski ◽  
Chris R. Johnson ◽  
...  
Keyword(s):  
Motion Artifacts ◽  
Parallel Mri

scholarly journals New algorithms for parallel MRI

2008 ◽  
Vol 135 ◽  
pp. 012009
Author(s):  
S Anzengruber ◽  
F Bauer ◽  
A Leitão ◽  
R Ramlau
Keyword(s):  
Parallel Mri ◽  
New Algorithms

scholarly journals Optimal heliostat assignment strategy for multiple-receiver systems

2020 ◽  
Author(s):  
Michael J. Wagner ◽  
Megan F. Watkins ◽  
Shaun D. Sullivan
Keyword(s):  
Assignment Strategy ◽  
Multiple Receiver

Processing of non-uniform azimuth sampling in multiple-receiver Synthetic aperture sonar image

2007 ◽  
Author(s):  
Hailiang Yang ◽  
Jinsong Tang ◽  
Qihu Li ◽  
Xiaodong Liu
Keyword(s):  
Synthetic Aperture ◽  
Synthetic Aperture Sonar ◽  
Sonar Image ◽  
Multiple Receiver
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