Simple methods to test the accuracy of MRgFUS robotic systems. Issue 4 (31st May 2021)

• Record Type: Journal Article
• Authors: Antoniou, Anastasia; Drakos, Theocharis; Giannakou, Marinos; Evripidou, Nikolas; Georgiou, Leonidas; Christodoulou, Theodora; Panayiotou, Natalie; Ioannides, Cleanthis; Zamboglou, Nikolaos; Damianou, Christakis
• Is Part Of: International journal of medical robotics and computer assisted surgery. Volume 17:Issue 4(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-05-31
• Subjects: motion accuracy -- MRgFUS robotic devices -- simple evaluation methods; Robotics in medicine -- Periodicals; Surgery -- Technological innovations -- Periodicals; Imaging systems in medicine -- Periodicals; 617.90285
• DOI: 10.1002/rcs.2287
• Languages: English
• ISSNs: 1478-5951

Abstract

Abstract: Background: Robotic‐assisted diagnostic and therapeutic modalities require a highly accurate performance to be certified for clinical application. In this paper, three simple methods for assessing the accuracy of motion of magnetic resonance‐guided focused ultrasound (MRgFUS) robotic systems are presented. Methods: The accuracy of motion of a 4 degrees of freedom robotic system intended for preclinical use of MRgFUS was evaluated by calliper‐based and magnetic resonance imaging (MRI) methods, as well as visually by performing multiple ablations on a plastic film. Results: The benchtop results confirmed a highly accurate motion in all axes of operation. The spatial positioning errors estimated by MRI evaluation were defined by the size of the imaging pixels. Lesions arrangement in discrete and overlapping patterns confirmed satisfactory alignment of motion trajectories. Conclusions: We believe the methods presented here should serve as a standard for evaluating the accuracy of motion of MRgFUS robotic systems.