RACER‐GRASP: Respiratory‐weighted, aortic contrast enhancement‐guided and coil‐unstreaking golden‐angle radial sparse MRI

@article{Feng2018RACERGRASPRA,
  title={RACER‐GRASP: Respiratory‐weighted, aortic contrast enhancement‐guided and coil‐unstreaking golden‐angle radial sparse MRI},
  author={Li Feng and Chenchan Huang and Krishna P. Shanbhogue and Daniel K. Sodickson and Hersh Chandarana and Ricardo Otazo},
  journal={Magnetic Resonance in Medicine},
  year={2018},
  volume={80}
}
To develop and evaluate a novel dynamic contrast‐enhanced imaging technique called RACER‐GRASP (Respiratory‐weighted, Aortic Contrast Enhancement‐guided and coil‐unstReaking Golden‐angle RAdial Sparse Parallel) MRI that extends GRASP to include automatic contrast bolus timing, respiratory motion compensation, and coil‐weighted unstreaking for improved imaging performance in liver MRI. 
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31 Citations

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TLDR
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To develop a continuous‐acquisition cardiac self‐gated spiral pulse sequence and a respiratory motion‐compensated reconstruction strategy for free‐breathing cine imaging.

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TLDR
To improve the quality of structural images and the quantification of ventilation in free‐breathing dynamic pulmonary MRI, a new approach is proposed that combines X-ray diffraction and electrophysiology for the first time.

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TLDR
A method that can enable simultaneous examination of lung anatomy and ventilation is of clinical interest and CT/spirometry only provides global measures of lung ventilation.

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TLDR
Both CS-VIBE and GRASP provide excellent results in dynamic liver MRI using extracellular and hepatocyte-specific contrast agents, in terms of IQ, peak signal intensity, and presence of artifacts.

References

SHOWING 1-10 OF 28 REFERENCES

XD‐GRASP: Golden‐angle radial MRI with reconstruction of extra motion‐state dimensions using compressed sensing

To develop a novel framework for free‐breathing MRI called XD‐GRASP, which sorts dynamic data into extra motion‐state dimensions using the self‐navigation properties of radial imaging and…

Fast pediatric 3D free‐breathing abdominal dynamic contrast enhanced MRI with high spatiotemporal resolution

To develop a method for fast pediatric 3D free‐breathing abdominal dynamic contrast enhanced (DCE) magnetic resonance imaging (MRI) and investigate its clinical feasibility.

High‐temporospatial‐resolution dynamic contrast‐enhanced (DCE) wrist MRI with variable‐density pseudo‐random circular Cartesian undersampling (CIRCUS) acquisition: evaluation of perfusion in rheumatoid arthritis patients

TLDR
Highly accelerated 3D DCE wrist MRI with improved temporospatial resolution has been achieved in RA patients and provides accurate assessment of neovascularization and perfusion in RA joints, showing promise as a potential tool for evaluating treatment responses.

Free‐breathing pediatric MRI with nonrigid motion correction and acceleration

To develop and assess motion correction techniques for high‐resolution pediatric abdominal volumetric magnetic resonance images acquired free‐breathing with high scan efficiency.

6523 Automatic Bolus Analysis for DCE-MRI Using Radial Golden-Angle Stack-of-stars GRE Imaging

TLDR
A parameter-free method to automatically extract a bolus time curve from raw k-space data acquired with a radial stack-of-stars GRE sequence that can be used to display statistics about the CA bolus right after the scan, as well as to automatically pick time frames at important stages of perfusion.

Golden‐angle radial sparse parallel MRI: Combination of compressed sensing, parallel imaging, and golden‐angle radial sampling for fast and flexible dynamic volumetric MRI

To develop a fast and flexible free‐breathing dynamic volumetric MRI technique, iterative Golden‐angle RAdial Sparse Parallel MRI (iGRASP), that combines compressed sensing, parallel imaging, and…

Robust self‐navigated body MRI using dense coil arrays

TLDR
To develop a robust motion estimation method for free‐breathing body MRI using dense coil arrays using dense Coil arrays, a large number of experiments have shown good results in both straight-line and sham MRI studies.

Respiratory Motion-Resolved Compressed Sensing Reconstruction of Free-Breathing Radial Acquisition for Dynamic Liver Magnetic Resonance Imaging

TLDR
Free-breathing motion-resolved XD-GRASP reconstructions provide diagnostic high-quality multiphase images in patients undergoing Gd-EOB-DTPA–enhanced liver examination, with higher score indicating more optimal examination.

GOCART: GOlden-angle CArtesian randomized time-resolved 3D MRI.

Sinogram-based coil selection for streak artifact reduction in undersampled radial real-time magnetic resonance imaging.

TLDR
The proposed method for automatically excluding receiver coil elements which lead to streak artifacts is robust with respect to different experimental settings and fast to be included in the online reconstruction pipeline for real-time MRI.