scholarly journals The impact of the atrial wall thickness in normal/mild late‐gadolinium enhancement areas on atrial fibrillation rotors in persistent atrial fibrillation patients

2022 ◽  
Author(s):  
Toshihiro Nakamura ◽  
Kunihiko Kiuchi ◽  
Koji Fukuzawa ◽  
Mitsuru Takami ◽  
Yoshiaki Watanabe ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Late Gadolinium Enhancement ◽  
Wall Thickness ◽  
Persistent Atrial Fibrillation ◽  
Atrial Wall ◽  
Gadolinium Enhancement ◽  
The Impact

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 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

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
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