Left atrial volume assessed by ECG-gated computed tomography: Variations according to age, gender and time during the cardiac cycle

Fayad, Elsayed A; Boucebci, S.; Vesselle, G.; Zourdani, H.; Herpe, Guillaume; Hamya, I.; Ingrand, Pierre; Christiaens, Luc; Tasu, J.P.

doi:10.1016/j.diii.2017.10.011

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…The median of LA diameter was 40 (35; 44) mm, wherein this parameter was increased (25–38 mm) 28 in 23 patients. The maximum LA volume exceeded 90 cm 3 29 in 23 patients and averaged 100.5 (80; 127) cm 3 .…”

Section: Resultsmentioning

confidence: 90%

Radiomic phenotype of epicardial adipose tissue in the prognosis of atrial fibrillation recurrence after catheter ablation in patients with lone atrial fibrillation

Ilyushenkova

Сазонова

Popov

et al. 2022

Journal of Arrhythmia

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Background Epicardial adipose tissue (EAT) has been considered as one of the probable triggers of atrial fibrillation (AF). CT‐rediomics is a perspective noninvasive method of assessment of EAT. We evaluate the radiomic phenotype of EAT in patients with lone AF in the prognosis of AF recurrence after catheter ablation. Methods A total of 43 patients with lone AF referred for CA and 20 out‐hospital patients without arrhythmia underwent multidetector computed tomography coronary angiography. Segmentation of EAT and extraction radiomic features were performed on calcium scoring series using by 3D‐Slicer. Clinical follow‐up was performed for 12 months period after the CA. Results EAT in patients with lone AF had a distinct radiomic phenotype. Thus, 45 of 93 calculated radiomic features, volume and attenuation of EAT were significantly different between patients with lone AF and persons without any arrhythmia. In addition, 17 radiomic features were significantly different in subgroups with and without AF recurrence. Multivariate regression analysis demonstrated that only gray level nonuniformity normalized (GLSZM) was an independent predictor of AF recurrence (OR 1.0027, 95%CI 1.0009–1.0044, p = 0.002). ROC analysis data showed that GLSZM >1227.4 indicates high probability of AF recurrence during 12 months (sensitivity 89.4%, specificity 70.8%, AUC: 0.809; p = 0.001). Conclusion The radiomic parameter GLSZM is associated with late AF recurrence after CA in patients with lone AF. In current study GLSZM was a stronger predictor of lone AF recurrence in multivariate analysis comparing with other established risk factors and EAT volume and attenuation.

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Section: Resultsmentioning

confidence: 90%

Radiomic phenotype of epicardial adipose tissue in the prognosis of atrial fibrillation recurrence after catheter ablation in patients with lone atrial fibrillation

Ilyushenkova

Сазонова

Popov

et al. 2022

Journal of Arrhythmia

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“…Due to the routine protocol settings of the participating centers, CCT scans were performed in the end-diastolic phase, which underestimates LA volume and could potentially be a source of error. 24 As our study focused on TSP and not sizing, it is unlikely that the filling volume could significantly affect the results. The filling status or the phase in which the CT scans were performed could significantly affect the LA volume but not the LAA shape.…”

Section: Discussionmentioning

confidence: 97%

“…CT scans were not performed on the day of the procedure; therefore, the LA filling status could differ from the conditions during the procedure. Due to the routine protocol settings of the participating centers, CCT scans were performed in the end‐diastolic phase, which underestimates LA volume and could potentially be a source of error 24 . As our study focused on TSP and not sizing, it is unlikely that the filling volume could significantly affect the results.…”

Section: Study Limitationsmentioning

confidence: 99%

Transseptal puncture in left atrial appendage closure guided by 3D printing and multiplanar CT reconstruction

Hozman,

Herman,

Zemanek

et al. 2023

Cathet Cardio Intervent

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BackgroundThe presented study investigates the application of bi‐arterial 3D printed models to guide transseptal puncture (TSP) in left atrial appendage closure (LAAC).AimsThe objectives are to (1) test the feasibility of 3D printing (3DP) for TSP guidance, (2) analyse the distribution of the optimal TSP locations, and (3) define a CT‐derived 2D parameter suitable for predicting the optimal TSP locations.MethodsPreprocedural planning included multiplanar CT reconstruction, 3D segmentation, and 3DP. TSP was preprocedurally simulated in vitro at six defined sites. Based on the position of the sheath, TSP sites were classified as optimal, suboptimal, or nonoptimal. The aim was to target the TSP in the recommended position during the procedure. Procedure progress was assessed post hoc by the operator.ResultsOf 68 screened patients, 60 patients in five centers (mean age of 74.68 ± 7.64 years, 71.66% males) were prospectively analyzed (3DP failed in one case, and seven patients did not finally undergo the procedure). In 55 patients (91.66%), TSP was performed in the optimal location as recommended by the 3DP. The optimal locations for TSP were postero‐inferior in 45.3%, mid‐inferior in 45.3%, and antero‐inferior in 37.7%, with a mean number of optimal segments of 1.34 ± 0.51 per patient. When the optimal TSP location was achieved, the procedure was considered difficult in only two (3.6%) patients (but in both due to complicated LAA anatomy). Comparing anterior versus posterior TSP in 2D CCT, two parameters differed significantly: (1) the angle supplementary to the LAA ostium and the interatrial septum angle (160.83° ± 9.42° vs. 146.49° ± 8.67°; p = 0.001), and (2) the angle between the LAA ostium and the mitral annulus (95.02° ± 3.73° vs. 107.38° ± 6.76°; p < 0.001), both in the sagittal plane.ConclusionsIn vitro TSP simulation accurately determined the optimal TSP locations for LAAC and facilitated the procedure. More than one‐third of the optimal TSP sites were anterior.

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“…This allowed long-term follow-up, but the CTA protocol evaluated herein is outdated. Continuous technological improvements could correct some of its limitations by both improving image quality and reducing the radiation dose, as exemplified by recent studies [28][29][30][31][32][33].…”

Section: Discussionmentioning

confidence: 99%

Arterial endofibrosis in endurance athletes: Prospective comparison of the diagnostic accuracy of intra-arterial digital subtraction angiography and computed tomography angiography

Perrier¹,

Feugier²,

Goutain-Majorel³

et al. 2020

Diagnostic and Interventional Imaging

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Left atrial volume assessed by ECG-gated computed tomography: Variations according to age, gender and time during the cardiac cycle

Abstract: LAV measured at the 75% of the cardiac cycle phase significantly underestimates actual LAV leading to reconsider normal values. LAV can be computed from the measured value of LAV obtained on prospective ECG-gated MDCT.

Cited by 7 publications

References 23 publications

Radiomic phenotype of epicardial adipose tissue in the prognosis of atrial fibrillation recurrence after catheter ablation in patients with lone atrial fibrillation

Radiomic phenotype of epicardial adipose tissue in the prognosis of atrial fibrillation recurrence after catheter ablation in patients with lone atrial fibrillation

Transseptal puncture in left atrial appendage closure guided by 3D printing and multiplanar CT reconstruction

Arterial endofibrosis in endurance athletes: Prospective comparison of the diagnostic accuracy of intra-arterial digital subtraction angiography and computed tomography angiography

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