Radiation dose reduction strategies for intraoperative guidance and navigation using CT

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dc.contributor.advisorShekhar, Rajen_US
dc.contributor.authorShetye, Avanti Satishen_US
dc.contributor.departmentElectrical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2007-06-22T05:31:47Z
dc.date.available2007-06-22T05:31:47Z
dc.date.issued2007-02-20
dc.description.abstractThe advent of 64-slice computed tomography (CT) with high speed scanning makes CT a highly attractive and powerful tool for navigating image guided procedures. Interactive navigation needs scanning to be performed over extended time periods or even continuously. However, continuous CT is likely to expose the patient and the physician to potentially unsafe radiation levels. Before CT can be used appropriately for navigational purposes, the dose problem must be solved. Simple dose reduction is not adequate, because it degrades image quality. This study proposes two strategies for dose reduction; the first is the use of a statistical approach representing the stochastic nature of noisy projection data at low doses to lessen image degradation and the second, the modeling of local image deformations in a continuous scan. Taking advantage of modern CT scanners and specialized hardware, it may be possible to perform continuous CT scanning at acceptable radiation doses for intraoperative navigation.en_US
dc.format.extent2804563 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/6699
dc.language.isoen_US
dc.subject.pqcontrolledEngineering, Electronics and Electricalen_US
dc.subject.pqcontrolledEngineering, Biomedicalen_US
dc.subject.pquncontrolledCTen_US
dc.subject.pquncontrolledImage reconstructionen_US
dc.subject.pquncontrolledImage-guided procedureen_US
dc.subject.pquncontrolledIntraoperative guidance and navigationen_US
dc.titleRadiation dose reduction strategies for intraoperative guidance and navigation using CTen_US
dc.typeThesisen_US

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