| Magnetic resonance imaging-compatible, three-degrees-of-freedom joystick for surgical robot. | |
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MedLine Citation:
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PMID: 18008387 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: This paper presents a magnetic resonance (MR) compatible joystick for controlling a surgical robot arm. The surgical robot can be used to assist the surgeon in high precision neurosurgery tasks. Conventional joysticks cannot be used in magnetic resonance imaging (MRI) environments, because they generally contain ferromagnetic materials such as iron, which create distortions in MR images. Moreover, dangerous situations may arise, when an object containing ferromagnetic materials passes through the strong magnetic field of an imaging device. Currents generated by device electronics produce magnetic fields that distort MR images. METHODS: Operation of the joystick described here is based on measuring light intensity. Optical fibres are used for target illumination and for transmitting the reflected light. Their use enables the joystick electronics to be kept at a safe distance from the imaging machine. RESULTS: Experimental results prove that the joystick can be constructed on the presented operating principle using the designed mechanical structure. When the joystick was placed 15 cm away from the phantom object, it didn't cause any distortion to the MR image. CONCLUSIONS: The developed joystick can be used in an MRI environment. However, further development need to be done in order to avoid losses caused by bending optical fibres. |
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Authors:
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Juha Harja; Jussi Tikkanen; Hannu Sorvoja; Risto Myllylä |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The international journal of medical robotics + computer assisted surgery : MRCAS Volume: 3 ISSN: 1478-596X ISO Abbreviation: - Publication Date: 2007 Dec |
Date Detail:
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Created Date: 2008-01-23 Completed Date: 2008-02-11 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101250764 Medline TA: Int J Med Robot Country: England |
Other Details:
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Languages: eng Pagination: 365-71 Citation Subset: IM |
Copyright Information:
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(c) 2007 John Wiley & Sons, Ltd. |
Affiliation:
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Department of Electrical and Information Engineering, University of Oulu, Finland. juha.harja@ee.oulu.fi |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Computer Peripherals* Equipment Design Equipment Failure Analysis Imaging, Three-Dimensional / instrumentation*, methods Magnetic Resonance Imaging / instrumentation*, methods Man-Machine Systems* Robotics / instrumentation*, methods Surgery, Computer-Assisted / instrumentation*, methods Transducers User-Computer Interface* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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