ISSN:
1662-9779
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Physik
Notizen:
Magnetic resonance imaging (MRI) is currently a widely used technology for obtaining athree-dimensional image of a patient’s internal structures. This study examines the measurementproperties of an optical tracking system utilised in the MRI room. The results were used to assessthe suitability of the device to be used as a part of the control system of a surgical robot. Theposition and orientation of the instrument, MRI scanner and the patient are measured using anoptical tracking system in the MRI room. The measurement data can be used to display theinstrument used as a part of the image of the patient. The optical tracking system used in the MRIroom can also be considered as a part of the control system of a robot located in the room. Whenconsidering such use, the operations of the measuring device in different measurement conditionsmust be known. In terms of robot control, it is important to know the deviation attributed tomeasurement when defining the translation vector and orientation between two trackers. Fivemeasurement series were carried out using the measurement device to examine the deviation in thetranslation vector and orientation data between two trackers. The distance and position between thetrackers were changed between the measurement series. During the measurement series, themeasurement device was moved to different distances from the trackers and the translation vectorand orientation between the trackers were defined on the basis of the measurement results obtained.The measurements showed that the deviation of the translation vector did not significantly changeas the measurement distance increased, but the deviation of orientation data between differenttrackers increased significantly. Deviation in the translation vector increased as the distancebetween trackers increased, but deviation in orientation did not change significantly
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.144.191.pdf
Permalink
