scholarly journals Association Between Epicardial Adipose Tissue Volumes on 3-Dimensional Reconstructed CT Images and Recurrence of Atrial Fibrillation After Catheter Ablation

2011 ◽  
Vol 75 (11) ◽  
pp. 2559-2565 ◽  
Author(s):  
Koichi Nagashima ◽  
Yasuo Okumura ◽  
Ichiro Watanabe ◽  
Toshiko Nakai ◽  
Kimie Ohkubo ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Adipose Tissue ◽  
Catheter Ablation ◽  
Epicardial Adipose Tissue ◽  
Ct Images ◽  
3 Dimensional

Association between epicardial adipose tissue and embolic stroke after catheter ablation of atrial fibrillation

2019 ◽  
Vol 30 (11) ◽  
pp. 2209-2216 ◽  
Author(s):  
Jinhee Ahn ◽  
Seung Yong Shin ◽  
Jaemin Shim ◽  
Young‐Hoon Kim ◽  
Sang‐Jin Han ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Adipose Tissue ◽  
Catheter Ablation ◽  
Epicardial Adipose Tissue ◽  
Embolic Stroke

scholarly journals Quantification of epicardial adipose tissue in patients undergoing hybrid ablation for atrial fibrillation

2019 ◽  
Vol 56 (1) ◽  
pp. 79-86
Author(s):  
Mindy Vroomen ◽  
Jules R Olsthoorn ◽  
Bart Maesen ◽  
Vladimir L’Espoir ◽  
Mark La Meir ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Adipose Tissue ◽  
Catheter Ablation ◽  
Right Atrium ◽  
Left Atrial ◽  
Epicardial Adipose Tissue ◽  
Conduction Block ◽  
Myocardial Tissue ◽  
Tissue Volume ◽  
Af Ablation

Abstract OBJECTIVES Epicardial adipose tissue volume (EAT-V) has been linked to atrial fibrillation (AF) recurrences after catheter ablation. We retrospectively studied the association between atrial EAT-V and outcome after hybrid AF ablation (epicardial surgical and endocardial catheter ablation). METHODS On preoperative cardiac computed tomography angiography scans, the left atrium and right atrium were manually delineated using the open source ImageJ. With custom-made automated software, the number of pixels in the regions of interest on each slice was calculated. On the basis of the Hounsfield units, pixel size and slice thickness, EAT-V was computed and normalized in relation to the body surface area (BSA) and the myocardial tissue volume. RESULTS Eighty-five patients were included. Left atrial and right atrial EAT-V normalized to BSA were not significantly different between paroxysmal and persistent AF [0.84 (0.51–1.50) vs 0.81 (0.57–1.18), 1.74 (1.02–2.56) vs 1.55 (1.26–2.18), all P = 0.9], neither between the acute conduction block and no acute conduction block in the epicardial box lesion [0.92 (0.55–1.39) vs 0.72 (0.55–1.24), P = 0.5, right atrium not applicable], nor between the sinus rhythm and arrhythmia recurrence after 12 months [0.88 (0.55–1.48) vs 0.63 (0.47–1.10), 1.61 (1.11–2.50) vs 1.55 (1.20–2.20), all P > 0.1]. Left atrial EAT-V normalized to myocardial tissue volume was not different between the groups. CONCLUSIONS This study could neither confirm that EAT-V was predictive of recurrence of supraventricular arrhythmias in patients undergoing a hybrid AF ablation, nor that EAT-V was different between patients with paroxysmal AF and persistent and long-standing persistent AF. This suggests that EAT-V might not affect the outcome in surgical ablation procedures and therefore should not influence preoperative or intraoperative decision-making.

scholarly journals Potential role of CT-radiomics of epicardial adipose tissue in the prognosis of atrial fibrillation catheter ablation outcome

2021 ◽  
Vol 22 (Supplement_3) ◽  
Author(s):  
J Ilyushenkova ◽  
AE Shelemekhov ◽  
EV Popov ◽  
SI Sazonova ◽  
RE Batalov ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Adipose Tissue ◽  
Catheter Ablation ◽  
Epicardial Adipose Tissue ◽  
Public Institution ◽  
Slice Thickness ◽  
Tissue Segmentation ◽  
Group 2 ◽  
Af Recurrence ◽  
Group 1

Abstract Funding Acknowledgements Type of funding sources: Public Institution(s). Main funding source(s): None Previous studies have shown that an increase of epicardial adipose tissue (EAT) volume is an independent risk factor of atrial fibrillation (AF) occurrence. However, there is no reliable data about the relationship between EAT and AF recurrence after catheter ablation (CA). Also, there are no studies of the possibility of using of CT radiomics of EAT, in particular of the quantitative assessment of EAT textural changes, for prognosis of CA outcomes in patients with AF.  Thus, the aim of the present study was to estimate the association of CT-radiomics features of EAT with probability of AF recurrence after catheter ablation. Materials and Methods The prospective research included 46 patients (42 males and 4 females, mean age 42.4 ± 9.36) with drug-refractory lone AF referred for catheter ablation (CA). Before CA all patients underwent multislice CT-angiography for preoperative evaluation of cardiac and vessels anatomy and volumes. Images were acquired using a 64-detector CT scanner (GE Discovery NM/CT 570c, GE Healthcare, Milwaukee, WI, USA). Imaging parameters included a gantry rotation time of 400 ms, tube voltage of 120 mA, slice thickness 1.25 mm. For evaluation of EAT only native images (contrast-free scans) without ECG synchronization were analyzed. Epicardial adipose tissue segmentation was performed by 3D-Sliser software and the SliserRadiomics module (version 4.10.2). From CT images we quantified EAT volume and 93 radiomic features, including subgroups of first-order statistics, GLCM, GLDM, GLRLM, GLSZM and NGTDM parameters. All patients were followed-up prospectively for 12 months after the CA. A blanking period of 3 months was applied. The criteria of AF recurrence were AF episodes of more than 30 sec duration. Results. Recurrence of AF was registered in 26 patients. After the end of the follow-up, we divided study population on those with (Group 1) and without (Group 2) AF recurrence. EAT volume and attenuation values for Group 1 were 176.6 ± 56.9 sm3 and -77.47 ± 2.2 HU respectively; for Group 2 were 174.05 ± 73.3 sm3 and -78.42 ± 3.3 HU respectively, with no significant differences (p < 0.05). In the same time, 16 of 93 CT radiomics EAT parameters were significantly different between Group 1 and Group 2 and were significantly associated with AF recurrence after CA according to univariable logistic analyses. Multivariate regression analysis demonstrated that only Gray Level Non-Uniformity Normalized (GLNUN of GLSZM) parameter was an independent predictor of AF recurrence (Odds ratio 1.0022, 95%Cl 1.0006 to 1.0038, p = 0.0013);  ROC-curve analysis data showed that GLNUN > 1227.2 indicates high probability of AF recurrence during 12 months (sensitivity 84.2 %, specificity 70.8 %, AUC:0.765; p = 0.001). Conclusion radiomic biomarkers of EAT have a potential to serve as a predictors of AF recurrence after CA.

scholarly journals Is There an Association between Epicardial Adipose Tissue and Outcomes after Paroxystic Atrial Fibrillation Catheter Ablation?

2021 ◽  
Vol 10 (14) ◽  
pp. 3037
Author(s):  
Néfissa Hammache ◽  
Hugo Pegorer-Sfes ◽  
Karim Benali ◽  
Isabelle Magnin Poull ◽  
Arnaud Olivier ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Adipose Tissue ◽  
Catheter Ablation ◽  
Pulmonary Vein ◽  
Pulmonary Vein Isolation ◽  
Epicardial Adipose Tissue ◽  
University Hospital ◽  
One Year ◽  
Af Recurrence

Background: In patients undergoing paroxysmal atrial fibrillation (PAF) ablation, pulmonary vein isolation (PVI) alone fails in maintaining sinus rhythm in up to one third of patients after a first catheter ablation. Epicardial adipose tissue (EAT), as an endocrine-active organ, could play a role in the recurrence of AF after catheter ablation. Objective: To evaluate the predictive value of clinical, echocardiographic, biological parameters and epicardial fat density measured by computed tomography scan (CT-scan) on AF recurrence in PAF patients who underwent a first pulmonary vein isolation procedure using radiofrequency (RF). Methods: This monocentric retrospective study included all patients undergoing first-time RF PAF ablation at the Nancy University Hospital between March 2015 and December 2018 with one-year follow-up. Results: 389 patients were included, of whom 128 (32.9%) had AF recurrence at one-year follow-up. Neither total-EAT volume (88.6 ± 37.2 cm3 vs. 91.4 ± 40.5 cm3, p = 0.519), nor total-EAT radiodensity (−98.8 ± 4.1 HU vs. −98.8 ± 3.8 HU, p = 0.892) and left atrium-EAT radiodensity (−93.7 ± 4.3 HU vs. −93.4 ± 6.0 HU, p = 0.556) were significantly associated with AF recurrence after PAF ablation. In multivariate analysis, previous cavo-tricuspid isthmus (CTI) ablation, ablation procedure duration, BNP and triglyceride levels remained independently associated with AF recurrence after catheter ablation at 12-months follow-up. Conclusion: Contrary to persistent AF, EAT parameters are not associated with AF recurrence after paroxysmal AF ablation. Thus, the role of the metabolic atrial substrate in PAF pathophysiology appears less obvious than in persistent AF.

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