Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Photoacoustic Assisted Device Guidance and Thermal Lesion Imaging for Radiofrequency Ablation

Not Accessible

Your library or personal account may give you access

Abstract

Radiofrequency ablation (RFA) is a widely used treatment method for unresectable malignant tumors. In percutaneous RFA, the tumor recurrence rate is high due to incomplete ablation. Feedback from the imaging system during the RFA procedure is vital in reducing the tumor recurrence. We propose the use of photoacoustic (PA) imaging, integrated with an ultrasound (US) system to monitor the RFA procedure. The imaging system consists of a US system with a linear array and a pulsed laser illumination. We study the PA assisted RFA device guidance to an anomalous target embedded inside a chicken breast tissue. We compare both US and PA images to highlight the advantage of using the proposed method. Further, we image an ablated ex vivo bovine liver sample using the system. The result shows a drop in PA intensity from the ablated region compared to normal tissue. Our preliminary study shows that PA imaging is a potential modality for RFA procedures.

© 2019 SPIE/OSA

PDF Article
More Like This
Annular illumination photoacoustic probe for needle guidance in medical interventions

Elina Rascevska, Kalloor Joseph Francis, and Srirang Manohar
11077_20 European Conference on Biomedical Optics (ECBO) 2019

Monitoring radiofrequency ablation of biological tissue using broadband time-resolved diffuse optical spectroscopy

Pranav Lanka, K. J. Francis, Hindrik Kruit, Sanathana Konugolu Venkata Sekar, Andrea Farina, Rinaldo Cubeddu, Srirang Manohar, and Antonio Pifferi
11074_94 European Conference on Biomedical Optics (ECBO) 2019

Fiber-Optic EFPI/FBG Dual Sensor for Monitoring of Radiofrequency Thermal Ablation of Liver Tumors

D. Tosi, E. G. Macchi, M. Gallati, G. Braschi, A. Cigada, S. Rossi, S. Poeggel, G. Leen, and E. Lewis
AW1L.4 CLEO: Applications and Technology (CLEO:A&T) 2014

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved