Late‐gadolinium enhancement properties associated with atrial fibrillation rotors in patients with persistent atrial fibrillation

2021 ◽  
Vol 32 (4) ◽  
pp. 1005-1013
Author(s):  
Toshihiro Nakamura ◽  
Kunihiko Kiuchi ◽  
Koji Fukuzawa ◽  
Mitsuru Takami ◽  
Yoshiaki Watanabe ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Late Gadolinium Enhancement ◽  
Persistent Atrial Fibrillation ◽  
Gadolinium Enhancement

scholarly journals Improved 3D late gadolinium enhancement (LGE) imaging with dynamic-TI in patients with persistent atrial fibrillation

2014 ◽  
Vol 16 (S1) ◽  
Author(s):  
Jennifer Keegan ◽  
Peter Gatehouse ◽  
Shouvik Haldar ◽  
Ricardo Wage ◽  
Sonya V Babu-Narayan ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Late Gadolinium Enhancement ◽  
Persistent Atrial Fibrillation ◽  
Gadolinium Enhancement

scholarly journals The Impact of the Atrial Wall Thickness in Less Late-Gadolinium Enhancement Areas on Atrial Fibrillation Drivers in Persistent Atrial Fibrillation Patients

2021 ◽  
Author(s):  
Toshihiro Nakamura ◽  
kunihiko kiuchi ◽  
Koji Fukuzawa ◽  
Mitsuru Takami ◽  
yoshiaki watanabe ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Late Gadolinium Enhancement ◽  
Wall Thickness ◽  
Volume Ratio ◽  
Persistent Atrial Fibrillation ◽  
The Novel ◽  
Atrial Wall ◽  
Gadolinium Enhancement ◽  
Roc Curve Analysis ◽  
The Impact

Background: Some of atrial fibrillation (AF) drivers are found in lesser late-gadolinium enhancement (LGE) areas, as well as heterogenous ones. The atrial wall thickness (AWT) has been reported to be important as a possible AF substrate. However, the AWT and degree of LGEs as an AF substrate has not been fully validated in humans. Objective: The purpose of this study was to evaluate the impact of the AWT in lesser LGE areas on AF drivers. Methods: A total of 287 segments in 15 persistent AF patients were assessed. AF drivers were defined as non-passively activated areas (NPAs), where rotational activation was frequently observed, and were detected by the novel real-time phase mapping (ExTRa Mapping). Lesser LGE areas were defined as areas with a volume ratio of the enhancement voxel of <10%. The AWT was defined as the minimum distance from the manually determined endocardium to the epicardial border on the LGE-MRI. Results: NPAs were found in 20 (18.0%) of 131 lesser LGE areas where the AWT was significantly thicker than that in the passively activated areas (PAs) (2.46±0.26 vs. 2.20±0.25 mm, p<0.001). However, NPAs were found in 61 (21.3%) of 287 LGE areas where the AWT was similar to that of the PAs (2.24±0.24 vs. 2.22±0.25 mm, p=0.58). An ROC curve analysis yielded an optimal cutoff value of 2.24 mm for predicting the presence of an NPA in lesser LGE areas. Conclusion: The location of AF drivers in lesser LGE areas might be more accurately identified by evaluating the AWT.

scholarly journals The Effect of Fat Pad Modification during Ablation of Atrial Fibrillation: Late Gadolinium Enhancement MRI Analysis

2013 ◽  
Vol 36 (4) ◽  
pp. 467-476 ◽  
Author(s):  
KOJI HIGUCHI ◽  
MEHMET AKKAYA ◽  
MATTHIAS KOOPMANN ◽  
JOSHUA J.E. BLAUER ◽  
NATHAN S. BURGON ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Late Gadolinium Enhancement ◽  
Fat Pad ◽  
Gadolinium Enhancement
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