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MRI Compatibility of Robot Actuation Techniques - A Comparative Study
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Institution: |
Engineering Research Center, Johns Hopkins University, Baltimore, MD, USA. |
Publisher: |
Med Image Comput Comput Assist Interv. MICCAI 2008 |
Publication Date: |
Sep-2008 |
Volume Number: |
11 |
Issue Number: |
Pt 2 |
Pages: |
509-517 |
Citation: |
Int Conf Med Image Comput Comput Assist Interv. 2008;11(Pt 2):509-517. |
PubMed ID: |
18982643 |
PMCID: |
PMC297555 |
ISBN: |
978-3-540-85989-5 |
Appears in Collections: |
NA-MIC |
Sponsors: |
NIH R01-CA111288-01 NIH R01-EB002963 NSF EEC-97-31478 CDMRP PCRP Fellowship W81XWH-07-1-0171 |
Generated Citation: |
Fischer G.S., Krieger A., Iordachita I., Csoma C., Whitcomb L., Fichtinger G. MRI Compatibility of Robot Actuation Techniques - A Comparative Study. Int Conf Med Image Comput Comput Assist Interv. 2008;11(Pt 2):509-517. PMID: 18982643. PMCID: PMC297555. |
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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.
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