Dose and image quality considerations in computed tomography

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dc.contributor.advisorKyprianou, Iacovosen_US
dc.contributor.authorAbboud, Samiren_US
dc.contributor.departmentBioengineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2011-10-08T05:33:13Z
dc.date.available2011-10-08T05:33:13Z
dc.date.issued2011en_US
dc.description.abstractThe increased use of Computed Tomography as an imaging modality is of concern because of the growing body of evidence linking radiation exposure to cancer incidence. However, a framework does not yet exist for balancing the immediate needs of the clinical task (image quality) with future risks due to the imaging procedure (dose). We developed a method to estimate the shape and thickness of materials yielding attenuation equivalent to that of bow-tie-shaped filters in clinical scanners. The results are especially useful for accurate modeling in Monte Carlo simulations of radiation transport. We then investigated measures of dose and image quality using both simulation and laboratory experimentation. We found that current measures of dose are robust under current clinical conditions. We also found that measures of image quality are object and task specific.en_US
dc.identifier.urihttp://hdl.handle.net/1903/11871
dc.subject.pqcontrolledMedical imaging and radiologyen_US
dc.subject.pquncontrolledCTen_US
dc.subject.pquncontrolledCTDIen_US
dc.subject.pquncontrolledDoseen_US
dc.subject.pquncontrolledLSFen_US
dc.subject.pquncontrolledMTFen_US
dc.subject.pquncontrolledRadiationen_US
dc.titleDose and image quality considerations in computed tomographyen_US
dc.typeThesisen_US

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