scholarly journals Imaging of subendocardial adipose tissue and fiber orientation distributions in the human left atrium using optical coherence tomography

2019 ◽  
Vol 30 (12) ◽  
pp. 2950-2959 ◽  
Author(s):  
Theresa H. Lye ◽  
Charles C. Marboe ◽  
Christine P. Hendon
Keyword(s):  
Optical Coherence Tomography ◽  
Adipose Tissue ◽  
Left Atrium ◽  
Fiber Orientation ◽  
Optical Coherence ◽  
Orientation Distributions

scholarly journals Polarization-sensitive optical coherence tomography monitoring of percutaneous radiofrequency ablation in left atrium of living swine

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaowei Zhao ◽  
Ohad Ziv ◽  
Reza Mohammadpour ◽  
Benjamin Crosby ◽  
Walter J. Hoyt ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Radiofrequency Ablation ◽  
Left Atrium ◽  
Real Time ◽  
Wall Thickness ◽  
Ex Vivo ◽  
Optical Coherence ◽  
Percutaneous Radiofrequency Ablation ◽  
Cardiac Wall

AbstractRadiofrequency ablation (RFA) is commonly used to treat atrial fibrillation (AF). However, the outcome is often compromised due to the lack of direct real-time feedback to assess lesion transmurality. In this work, we evaluated the ability of polarization-sensitive optical coherence tomography (PSOCT) to measure cardiac wall thickness and assess RF lesion transmurality during left atrium (LA) RFA procedures. Quantitative transmural lesion criteria using PSOCT images were determined ex vivo using an integrated PSOCT-RFA catheter and fresh swine hearts. LA wall thickness of living swine was measured with PSOCT and validated with a micrometer after harvesting the heart. A total of 38 point lesions were created in the LA of 5 living swine with the integrated PSOCT-RFA catheter using standard clinical RFA procedures. For all lesions with analyzable PSOCT images, lesion transmurality was assessed with a sensitivity of 89% (17 of 19 tested positive) and a specificity of 100% (5 of 5 tested negative) using the quantitative transmural criteria. This is the first report of using PSOCT to assess LA RFA lesion transmurality in vivo. The results indicate that PSOCT may potentially provide direct real-time feedback for LA wall thickness and lesion transmurality.

The value of optical coherence tomography and morphometry in evaluating the peripancreatic adipose tissue in infected pancreatic necrosis

2018 ◽  
Vol 80 (3) ◽  
pp. 46
Author(s):  
M. G. Ryabkov ◽  
O. A. Mokeev ◽  
E. B. Kiseleva ◽  
D. V. Shabanov ◽  
V. M. Gelikonov ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Adipose Tissue ◽  
Pancreatic Necrosis ◽  
Infected Pancreatic Necrosis ◽  
Optical Coherence

scholarly journals Quantification of fiber orientation in the canine atrial pacemaker complex using optical coherence tomography

2012 ◽  
Vol 17 (7) ◽  
pp. 1 ◽  
Author(s):  
Christina M. Ambrosi ◽  
Vadim V. Fedorov ◽  
Igor R. Efimov ◽  
Richard B. Schuessler ◽  
Andrew M. Rollins
Keyword(s):  
Optical Coherence Tomography ◽  
Fiber Orientation ◽  
Optical Coherence

scholarly journals Quantification of cardiac fiber orientation using optical coherence tomography

2008 ◽  
Vol 13 (3) ◽  
pp. 030505 ◽  
Author(s):  
Christine P. Fleming ◽  
Crystal M. Ripplinger ◽  
Bryan Webb ◽  
Igor R. Efimov ◽  
Andrew M. Rollins
Keyword(s):  
Optical Coherence Tomography ◽  
Fiber Orientation ◽  
Optical Coherence ◽  
Cardiac Fiber
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