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MRI Compatibility of Robot Actuation Techniques – A Comparative Study

Identifieur interne : 000F25 ( Pmc/Corpus ); précédent : 000F24; suivant : 000F26

MRI Compatibility of Robot Actuation Techniques – A Comparative Study

Auteurs : Gregory S. Fischer ; Axel Krieger ; Iulian Iordachita ; Csaba Csoma ; Louis L. Whitcomb ; Gabor Fichtinger

Source :

RBID : PMC:2975551

Abstract

This paper reports an experimental evaluation of the following three different MRI-compatible actuators: a Shinsei ultrasonic motor, a Nanomotion ultrasonic motor and a pneumatic cylinder actuator. We report the results of a study comparing the effect of these actuators on the signal to noise ratio (SNR) of MRI images under a variety of experimental conditions. Evaluation was performed with the controller inside and outside the scanner room and with both 1.5T and 3T MRI scanners. Pneumatic cylinders function with no loss of SNR with controller both inside and outside of the scanner room. The Nanomotion motor performs with moderate loss of SNR when moving during imaging. The Shinsei is unsuitable for motion during imaging. All may be used when motion is appropriately interleaved with imaging cycles.


Url:
PubMed: 18982643
PubMed Central: 2975551

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