Manipulation in MRI devices using electrostrictive polymer actuators: with an application to reconfigurable imaging coils
- 1 January 2004
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3, 2498-2504 Vol.3
- https://doi.org/10.1109/robot.2004.1307436
Abstract
MRI (magnetic resonance imaging) is a powerful medical diagnostic tool. Its value would be greatly increased if it were possible to physically manipulate objects within the MRI during imaging. However, the extraordinarily strong magnetic fields used by the MRI make conventional electromagnetic components, such as actuators and sensors, unusable. In this paper, it is shown that devices constructed using binary polymer based actuators, called electrostrictive polymer actuators (EPAM) are able to function effectively within the MRI without degrading its imaging performance. These actuators eliminate the need for conventional electromagnetic actuators and their associated electronics. The binary nature of the actuators eliminates the need for feedback sensors to control the devices motion. The basic concept called digital mechatronics is briefly summarized in this paper. Its application to a reconfigurable MRI surface-imaging coil (RMIC) is also presented. Experimental results are presented that show the EPAM RMIC is completely compatible in the MRI and can be used to enhance the diagnostic capabilities of MRI. The paper also suggests other applications of binary EPAM based actuators for use in MRI systems.Keywords
This publication has 15 references indexed in Scilit:
- A manipulator system for 14-gauge large core breast biopsies inside a high-field whole-body MR scannerJournal of Magnetic Resonance Imaging, 2003
- Endoscope Manipulator for Trans-nasal Neurosurgery, Optimized for and Compatible to Vertical Field Open MRILecture Notes in Computer Science, 2002
- Sensitivity profiles from an array of coils for encoding and reconstruction in parallel (SPACE RIP)Magnetic Resonance in Medicine, 2000
- MR Compatible Surgical Assist Robot: System Integration and Preliminary Feasibility StudyLecture Notes in Computer Science, 2000
- Switchable multicoil array for MR micro-imaging of breast lesionsMagnetic Resonance in Medicine, 1999
- Electrostriction of polymer dielectrics with compliant electrodes as a means of actuationSensors and Actuators A: Physical, 1998
- Development of an MRI-compatible needle insertion manipulator for stereotactic neurosurgeryJournal of Image Guided Surgery, 1995
- The NMR phased arrayMagnetic Resonance in Medicine, 1990
- Noise performance of surface coils for magnetic resonance imaging at 1.5 TMedical Physics, 1985
- Surface coil magnetic resonance imagingArchives Internationales de Physiologie et de Biochimie, 1985