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Year : 2021  |  Volume : 29  |  Issue : 3  |  Page : 195-202

A high intensity focused ultrasound system for veterinary oncology applications

1 Department of Electrical Engineering, Cyprus University of Technology, Limassol; Vet Ex Machina Ltd., Nicosia, Cyprus
2 Department of Electrical Engineering, Cyprus University of Technology, Limassol, Cyprus
3 Medsonic Ltd., Limassol, Cyprus
4 Department of Electrical Engineering, Cyprus University of Technology; Medsonic Ltd., Limassol, Cyprus
5 Medical Physics Sector, General Hospital of Nicosia, Nicosia, Cyprus

Correspondence Address:
Kyriakos Spanoudes
Department of Electrical Engineering, Cyprus University of Technology, Limassol
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JMU.JMU_130_20

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Background: Magnetic resonance-guided focused ultrasound surgery is an incisionless energy-based thermal method that is used for ablating tumors in the veterinary clinic. Aims and Objectives: In this article we describe a prototype of a veterinary system compatible with magnetic resonance imaging intended for small-to-medium-sized companion animals that was developed and tested in vivo in adult rabbits. Methods: Real-time monitoring of the ablation during the experiment was possible with MR thermometry. Experiments involved thermal monitoring of sonications applied in the thigh of the rabbits. A 38-mm diameter transducer operating at 2.6 MHz was used with a 60-mm-focal length. The robotic system employed 3 linear axes and one angular axis. For this study, only X and Y axis were enabled. Due to the target size limitations, motion in Z and Θ was not needed. The functionality of the positioning device was evaluated by means of MR thermometry, demonstrating sufficient heating and accurate motion in both axes of operation. Results: The postmortem findings confirm the ability of the system to induce thermal ablations in vivo in the absence of adverse effects. Conclusions: The device is a reliable and affordable solution for companion animal hospitals, offering and additional tool for the veterinary oncology society.

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