scholarly journals Adaptive slice‐specific z‐shimming for 2D spoiled gradient‐echo sequences

2020 ◽  
Vol 85 (2) ◽  
pp. 818-830
Author(s):  
Martin Soellradl ◽  
Johannes Strasser ◽  
Andreas Lesch ◽  
Rudolf Stollberger ◽  
Stefan Ropele ◽  
...  
Keyword(s):  
Gradient Echo ◽  
Spoiled Gradient Echo

scholarly journals Improvement of the Diagnostic Performance of Facial Neuritis Using Contrast-Enhanced 3D T1 Black-Blood Imaging: Comparison with Contrast-Enhanced 3D T1-Spoiled Gradient-Echo Imaging

2021 ◽  
Vol 10 (9) ◽  
pp. 1850
Author(s):  
Seun-Ah Lee ◽  
Sang-Won Jo ◽  
Suk-Ki Chang ◽  
Ki-Han Kwon
Keyword(s):  
Quantitative Analysis ◽  
Diagnostic Performance ◽  
Spin Echo ◽  
Fast Spin Echo ◽  
Black Blood ◽  
Gradient Echo ◽  
Diagnostic Confidence ◽  
Contrast Enhanced ◽  
Black Blood Imaging ◽  
Spoiled Gradient Echo

This study aims to investigate the diagnostic ability of the contrast-enhanced 3D T1 black-blood fast spin-echo (T1 BB-FSE) sequence compared with the contrast-enhanced 3D T1-spoiled gradient-echo (CE-GRE) sequence in patients with facial neuritis. Forty-five patients with facial neuritis who underwent temporal bone MR imaging, including T1 BB-FSE and CE-GRE imaging, were examined. Two reviewers independently assessed the T1 BB-FSE and CE-GRE images in terms of diagnostic performance, and qualitative (diagnostic confidence and visual asymmetric enhancement) and quantitative analysis (contrast-enhancing lesion extent of the canalicular segment of the affected facial nerve (LEC) and the affected side-to-normal signal intensity ratio (rSI)). The AUCs of each reviewer, and the sensitivity and accuracy of T1 BB-FSE were significantly superior to those of CE-GRE (p < 0.05). Regarding diagnostic confidence and visual asymmetric enhancement, T1 BB-FSE tended to be rated greater than CE-GRE (p < 0.05). Additionally, in quantitative analysis, LEC and rSI of the canalicular segment on T1 BB-FSE were larger than those on CE-GRE (p < 0.05). The T1 BB-FSE sequence was significantly superior to the CE-GRE sequence, with more conspicuous lesion visualization in terms of both qualitative and quantitative aspects in patients with facial neuritis.

T1-weighted spoiled gradient-echo MR imaging of focal hepatic lesion: comparison of in-phase vs opposed-phase pulse sequence

1997 ◽  
Vol 7 (7) ◽  
pp. 1048-1053 ◽  
Author(s):  
P. Soyer ◽  
Y. Rondeau ◽  
A.-C. Dufresne ◽  
L. Spelle ◽  
E. Somveille ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Pulse Sequence ◽  
Hepatic Lesion ◽  
Gradient Echo ◽  
Focal Hepatic Lesion ◽  
Spoiled Gradient Echo
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