PROSPECTIVE HEAD MOVEMENT CORRECTION FOR HIGH-RESOLUTION MRI USING AN IN-BORE OPTICAL TRACKING SYSTEM

Simple item page
dc.contributor.advisorTao, Yangen_US
dc.contributor.authorQin, Leien_US
dc.contributor.departmentBiological Resources Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2009-07-02T06:08:20Z
dc.date.available2009-07-02T06:08:20Z
dc.date.issued2009en_US
dc.description.abstractIn MRI of the human brain, subject motion is a major cause of magnetic resonance image quality degradation. To compensate the effects of head motion during data acquisition, an in-bore optical motion tracking system is proposed. The system comprises one or two MR compatible infrared cameras that are fixed on a holder right above and in front of the head coil. The resulting close proximity of the cameras to the object allows precise tracking of its movement. During image acquisition, the MRI scanner uses this tracking information to prospectively compensate for head motion by adjusting gradient field direction and RF phase and frequency. Experiments performed on subjects demonstrate the system's robustness, exhibiting an accuracy of better than 0.1mm and 0.15˚.en_US
dc.format.extent9570966 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/9269
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Biomedicalen_US
dc.subject.pquncontrolledmotion correctionen_US
dc.subject.pquncontrolledMRIen_US
dc.subject.pquncontrolledoptical trackingen_US
dc.titlePROSPECTIVE HEAD MOVEMENT CORRECTION FOR HIGH-RESOLUTION MRI USING AN IN-BORE OPTICAL TRACKING SYSTEMen_US
dc.typeDissertationen_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Qin_umd_0117E_10145.pdf
Size:
9.13 MB
Format:
Adobe Portable Document Format
Download

Collections

UMD Theses and Dissertations
Environmental Science & Technology Theses and Dissertations