Temporal resolution improvement of calibration-free dynamic contrast-enhanced MRI with compressed sensing optimized turbo spin echo: The effects of replacing turbo factor with compressed sensing accelerations

2015 ◽  
Vol 44 (1) ◽  
pp. 138-147 ◽  
Author(s):  
SoHyun Han ◽  
HyungJoon Cho
Keyword(s):  
Compressed Sensing ◽  
Spin Echo ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Dynamic Contrast Enhanced ◽  
Contrast Enhanced ◽  
Resolution Improvement ◽  
Calibration Free ◽  
Free Dynamic ◽  
Contrast Enhanced Mri

Modified electrocardiograph-triggered black-blood turbo spin-echo technique to improve T1-weighting in contrast-enhanced MRI of atherosclerotic carotid arteries

2008 ◽  
Vol 28 (2) ◽  
pp. 533-537 ◽  
Author(s):  
Loic Boussel ◽  
Gwenael Herigault ◽  
Monica Sigovan ◽  
Romaric Loffroy ◽  
Emmanuelle Canet-Soulas ◽  
...  
Keyword(s):  
Carotid Arteries ◽  
Spin Echo ◽  
Black Blood ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Spin Echo Technique ◽  
Contrast Enhanced Mri

Contrast-Enhanced Turbo Spin-Echo(TSE) T1-weighted Imaging: Improved Contrast of Enhancing Lesions

1997 ◽  
Vol 37 (3) ◽  
pp. 379
Author(s):  
Sung Wook Choi ◽  
Ghi Jai Lee ◽  
Jae Chan Shim ◽  
Young Ju Lee ◽  
Se Hyung Jeong ◽  
...  
Keyword(s):  
Spin Echo ◽  
Turbo Spin Echo ◽  
Turbo Spin ◽  
Contrast Enhanced

Spiral gradient echo versus cartesian turbo spin echo imaging for sagittal contrast-enhanced fat-suppressed T1 weighted spine MRI: an inter-individual comparison study

2021 ◽  
Author(s):  
Elisabeth Sartoretti ◽  
Sabine Sartoretti-Schefer ◽  
Luuk van Smoorenburg ◽  
Barbara Eichenberger ◽  
Árpád Schwenk ◽  
...  
Keyword(s):  
Spin Echo ◽  
Comparison Study ◽  
Turbo Spin Echo ◽  
Gradient Echo ◽  
Turbo Spin ◽  
Individual Comparison ◽  
Contrast Enhanced ◽  
Spine Mri ◽  
Lesion Conspicuity

Objectives: To compare a novel 3D spiral gradient echo (GRE) sequence with a conventional 2D cartesian turbo spin echo (TSE) sequence for sagittal contrast-enhanced (CE) fat-suppressed (FS) T1 weighted (T1W) spine MRI. Methods: In this inter-individual comparison study, 128 patients prospectively underwent sagittal CE FS T1W spine MRI with either a 2D cartesian TSE (“TSE”, 285 s, 64 patients) or a 3D spiral GRE sequence (“Spiral”, 93 s, 64 patients). Between both groups, patients were matched in terms of anatomical region (cervical/thoracic/lumbar spine and sacrum). Three readers used 4-point Likert scales to assess images qualitatively in terms of overall image quality, presence of artifacts, spinal cord visualization, lesion conspicuity and quality of fat suppression. Results: Spiral achieved a 67.4% scan time reduction compared to TSE. Interreader agreement was high (alpha=0.868-1). Overall image quality (4;[3,4] vs 3;[3,4], p<0.001 – p=0.002 for all readers), presence of artifacts (4;[3,4] vs 3;[3,4] p=0.027 – p=0.046 for all readers), spinal cord visualization (4;[4,4] vs 4;[3,4], p<0.001 for all readers), lesion conspicuity (4;[4,4] vs 4;[4,4], p=0.016 for all readers) and quality of fat suppression (4;[4,4] vs 4;[4,4], p=0.027 – p=0.033 for all readers), were all deemed significantly improved by all three readers on Spiral images as compared to TSE images Conclusion: We demonstrate the feasibility of a novel 3D spiral GRE sequence for improved and rapid sagittal CE FS T1W spine MRI. Advances in knowledge: A 3D spiral GRE sequence allows for improved sagittal CE FS T1W spine MRI at very short scan times.

Accelerated dynamic contrast enhanced MRI based on region of interest compressed sensing

2020 ◽  
Vol 67 ◽  
pp. 18-23 ◽  
Author(s):  
Amaresha Shridhar Konar ◽  
Nithin N. Vajuvalli ◽  
Rashmi Rao ◽  
Divya Jain ◽  
D.R. Ramesh Babu ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Region Of Interest ◽  
Dynamic Contrast Enhanced Mri ◽  
Dynamic Contrast Enhanced ◽  
Enhanced Mri ◽  
Contrast Enhanced ◽  
Contrast Enhanced Mri
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