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Optoacoustic monitoring of RF ablation lesion progression.
Proc. SPIE 10878 (2019)
Efficient monitoring of radiofrequency ablation procedures is essential to optimize the lesions induced to treat cancer, cardiac arrhythmias and other conditions. Recently, optoacoustic imaging and sensing methods have been suggested as a promising approach to address this challenge, offering unique advantages such as high sensitivity to temperature changes and chemical transformations in coagulated tissues, real-time operation and use of non- ionizing radiation. However, assessing how the ablation lesion boundary progresses is still challenged by changes in optical properties induced during the interventions. Herein, we suggest a new approach for dimensional characterization of the induced lesion based on detecting sharp positive variations in the time derivative of optoacoustic signals. Experiments in porcine tissue samples indicate that such variations are uniquely associated to the onset of ablation and that the method can robustly visualize the evolution of the lesion in three dimensions.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Optoacoustic Tomography ; Radiofrequency Ablation Of Tissue ; Temperature ; Thermal Treatments
Language
english
Publication Year
2019
HGF-reported in Year
2019
ISSN (print) / ISBN
0277-786X
e-ISSN
1996-756X
Journal
Proceedings of SPIE
Quellenangaben
Volume: 10878
Publisher
SPIE
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)
POF-Topic(s)
30205 - Bioengineering and Digital Health
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-505590-001
Scopus ID
85065397938
Erfassungsdatum
2019-05-20