scholarly journals Diffuse Gallium-67 Accumulation in the Left Atrial Wall Detected Using SPECT/CT Fusion Images

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Kohei Kotani ◽  
Joji Kawabe ◽  
Shigeaki Higashiyama ◽  
Atsushi Yoshida ◽  
Susumu Shiomi
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Left Atrium ◽  
Left Atrial ◽  
Emission Computed Tomography ◽  
Atrial Wall ◽  
Left Atrial Wall ◽  
Abnormal Accumulation ◽  
Fusion Images ◽  
Gallium 67

Gallium-67 scintigraphy is useful for detecting active inflammation. We show a 66-year-old female patient with atrial fibrillation and diffuse thickening of the left atrial wall due to acute myocarditis, who presented diffuse abnormal accumulation of gallium-67 in the left atrium on single photon emission computed tomography/computed tomography (SPECT/CT) fusion images. In the second gallium-67 scan 2 months after the first scintigraphy, the abnormal accumulation in the heart was no longer visible. Gallium-67 SPECT/CT images helped understanding the disease condition that temporary inflammation in the left atrium caused atrial fibrillation.

Paroxysmal Postprandial Atrial Fibrilation Suppressed by Laparoscopic Repair of a Giant Paraesophageal Hernia Compressing the Left Atrium

2015 ◽  
Vol 24 (1) ◽  
pp. 113-116 ◽  
Author(s):  
Daniel A. Cristian ◽  
Alin S. Constantin ◽  
Mariana Barbu ◽  
Dan Spătaru ◽  
Traean Burcoș ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrium ◽  
Laparoscopic Repair ◽  
Left Atrial ◽  
Paraesophageal Hernia ◽  
Surgical Repair ◽  
Atrial Wall ◽  
Left Atrial Wall ◽  
Atrial Fibrilation

We present the case of a patient with a giant paraesophageal hernia associated with paroxysmal postprandial atrial fibrillation that was suppressed after surgery. The imaging investigations showed the intrathoracic displacement of a large part of the stomach, which pushed the left atrial wall causing atrial fibrillation. The laparoscopic surgical repair acted as sole treatment for this condition.

scholarly journals Use of Computed Tomography to Identify Atrial Fibrillation Associated Differences in Left Atrial Wall Thickness and Density

2012 ◽  
Vol 36 (1) ◽  
pp. 55-62 ◽  
Author(s):  
THOMAS A. DEWLAND ◽  
MAX WINTERMARK ◽  
ANNA VAYSMAN ◽  
LISA M. SMITH ◽  
ELIZABETH TONG ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Wall Thickness ◽  
Left Atrial ◽  
Atrial Wall ◽  
Left Atrial Wall

scholarly journals Clinical correlates of echocardiographic tissue velocity imaging abnormalities of the left atrial wall during atrial fibrillation

EP Europace ◽  
2014 ◽  
Vol 16 (11) ◽  
pp. 1546-1553 ◽  
Author(s):  
I. Limantoro ◽  
C. B. de Vos ◽  
T. Delhaas ◽  
B. Weijs ◽  
Y. Blaauw ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Atrial Wall ◽  
Clinical Correlates ◽  
Tissue Velocity ◽  
Velocity Imaging ◽  
Left Atrial Wall

scholarly journals Correlation of left atrial wall thickness and atrial remodeling in atrial fibrillation

Medicine ◽  
2019 ◽  
Vol 98 (15) ◽  
pp. e15170 ◽  
Author(s):  
Kun Zuo ◽  
Kuibao Li ◽  
Min Liu ◽  
Jing Li ◽  
Xiaoqing Liu ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Wall Thickness ◽  
Left Atrial ◽  
Atrial Remodeling ◽  
Atrial Wall ◽  
Left Atrial Wall

1244Feasibility, safety and efficacy of tailoring ablation index to left atrial wall thickness (lawt) during atrial fibrillation ablation. The Ablate By-LAW Study

EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
C Teres ◽  
B Jauregui ◽  
D Soto-Iglesias ◽  
A Ordonez ◽  
A Chauca ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Wall Thickness ◽  
Left Atrial ◽  
Atrial Fibrillation Ablation ◽  
High Rate ◽  
Atrial Wall ◽  
Left Atrial Wall ◽  
Ablation Index ◽  
First Pass ◽  
Catheter Stability

Abstract Funding Acknowledgements Dr Teres was funded by Swiss Heartrhythm Foundation Introduction Circumferential pulmonary vein isolation (PVI) has become a mainstay in the treatment of atrial fibrillation (AF). The utility of ablation index (AI) to dose radiofrequency delivery for the reduction of AF recurrences has already been proven with a target AI ≥ 400 at the posterior wall and ≥550 at the anterior Wall. Nevertheless, the left atrial wall is a thin, heterogeneous structure with an important inter and intra-patient variability of LAWT. Objective To determine if adapting AI to atrial wall thickness (AWT) is feasible, effective and safe during AF ablation. Methods Single-Center study that included 80 consecutive patients referred for a first paroxysmal AF ablation that was performed with a single catheter approach with the intention to reduce vascular access complication rate. All patients had a MDCT prior to the ablation procedure. LAWT maps were semi-automatically computed from the MDCT as the local distance between the LA endo and epicardium. All procedures were performed under general anesthesia with a high-rate low-volume ventilation protocol for obtaining higher catheter stability. The transeptal puncture was TEE-guided. During the procedure, the WT map was fused with the LA anatomy using CARTO-merge. LAWT was categorized into 1mm-layers and the AI was titrated to the local atrial WT as follows: Thickness < 1 mm (red): 300; 1-2 mm (yellow): 350; 2-3 mm (green): 400; 3-4 mm (blue): 450; > 4 mm (purple): 450 (Figure). Maximal inter-lesion distance was set at 6 mm. VisiTag settings were: catheter position stability: minimum time 3 s, maximum range 4 mm; force over time: 25%, minimum force 3 g; lesion tag size: 3 mm. Respiration training was not possible due to the high catheter stability.  The circumferential ablation line was designed in a personalized fashion to avoid thicker regions. Results 80 patients [41 (51,2 %) male, age 60± 11 years] were included. Mean LVEF was 59 ± 5 %, Mean LA diameter 39,1 ± 5,8 mm, Mean LAWT was 1.36 ± 0.63 mm. Mean AI was 352 ± 36 on the RPVs and 356 ± 36 on the LPVs. Procedure time was 60,0 min (IQR 51-70). Fluoroscopy time was 58,5 s (35-97,5). First pass isolation was obtained in 72 (90%) of the RPVs and 75 (93,8%) of the LPVs. Conclusions the present study, assessing a novel, personalized protocol for radiofrequency titration during atrial fibrillation ablation, shows a high rate of first pass isolation with a lower need for RF energy delivery and lower procedure requirements, as compared to previous PV ablation protocols. Further studies are needed to evaluate the long-term results of this approach. Abstract Figure. LAWT-map Visitag points with tailored AI

scholarly journals New Magnetic Resonance Imaging-Based Method for Defining the Extent of Left Atrial Wall Injury After the Ablation of Atrial Fibrillation

2008 ◽  
Vol 52 (15) ◽  
pp. 1263-1271 ◽  
Author(s):  
Christopher J. McGann ◽  
Eugene G. Kholmovski ◽  
Robert S. Oakes ◽  
Joshua J.E. Blauer ◽  
Marcos Daccarett ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Atrial Fibrillation ◽  
Magnetic Resonance ◽  
Left Atrial ◽  
Resonance Imaging ◽  
Atrial Wall ◽  
Left Atrial Wall ◽  
Wall Injury
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