Myocardial Viability: Comparison of Free-Breathing Navigator-echo-gated Three-Dimensional Inversion-Recovery Gradient-Echo MR and Standard Multiple Breath-Hold Two-Dimensional Inversion-Recovery Gradient-Echo MR

2004 ◽  
Vol 51 (4) ◽  
pp. 393 ◽  
Author(s):  
Jin Hee Kim ◽  
Joon Beom Seo ◽  
Kyung Hyun Do ◽  
Dong Hyun Yang ◽  
Soo Hyun Lee ◽  
...  
Keyword(s):  
Myocardial Viability ◽  
Three Dimensional ◽  
Free Breathing ◽  
Inversion Recovery ◽  
Breath Hold ◽  
Two Dimensional ◽  
Gradient Echo ◽  
Navigator Echo

scholarly journals Validation and feasibility of liver T1 mapping using free breathing MOLLI sequence in children and young adults

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Yeon Jin Cho ◽  
Woo Sun Kim ◽  
Young Hun Choi ◽  
Seul Bi Lee ◽  
SeungHyun Lee ◽  
...  
Keyword(s):  
Young Adults ◽  
Relaxation Times ◽  
Free Breathing ◽  
Phantom Study ◽  
Inversion Recovery ◽  
Breath Hold ◽  
T1 Relaxation ◽  
Molli Sequence ◽  
Children And Young Adults ◽  
The Mean

Abstract We investigated the feasibility of free-breathing modified Look-Locker inversion recovery (MOLLI) sequence for measuring hepatic T1 values in children and young adults. To investigate the accuracy and the reproducibility of the T1 maps, a phantom study was performed with 12 different gadoterate meglumine concentrations and the T1 relaxation times of phantoms measured with the MOLLI sequence were compared against those measured with three different sequences: spin-echo inversion recovery, variable flip angle (VFA), and VFA with B1 correction. To evaluate the feasibility of free-breathing MOLLI sequence, hepatic T1 relaxation times obtained by free-breathing and breath-hold technique in twenty patients were compared. The phantom study revealed the excellent accuracy and reproducibility of MOLLI. In twenty patients, the mean value of hepatic T1 values obtained by free-breathing (606.7 ± 64.5 ms) and breath-hold (609.8 ± 64.0 ms) techniques showed no significant difference (p > 0.05). The Bland–Altman plot between the free-breathing and breath-hold revealed that the mean difference of T1 values was − 3.0 ms (− 0.5%). Therefore, T1 relaxation times obtained by MOLLI were comparable to the values obtained using the standard inversion recovery method. The hepatic T1 relaxation times measured by MOLLI technique with free-breathing were comparable to those obtained with breath-hold in children and young adults.

Experimental hyaline cartilage lesions: Two-dimensional spin-echo versus three-dimensional gradient-echo MR imaging

1991 ◽  
Vol 1 (6) ◽  
pp. 665-672 ◽  
Author(s):  
Gerhard Adam ◽  
Claus Nolte-Ernsting ◽  
Andreas Prescher ◽  
Markus Bühne ◽  
Kira Bruchmüller ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Hyaline Cartilage ◽  
Spin Echo ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Gradient Echo ◽  
Cartilage Lesions

scholarly journals Single breath-hold extended free-breathing navigator-gated three-dimensional coronary MRA

2002 ◽  
Vol 15 (2) ◽  
pp. 210-214 ◽  
Author(s):  
Michael E. Huber ◽  
Markus E. Oelhafen ◽  
Sebastian Kozerke ◽  
Oliver M. Weber ◽  
Peter Boesiger
Keyword(s):  
Three Dimensional ◽  
Free Breathing ◽  
Breath Hold ◽  
Single Breath ◽  
Coronary Mra ◽  
Single Breath Hold
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