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Document Type : Latin Dissertation
Language of Document : English
Record Number : 149883
Doc. No : ET21675
Main Entry : Matthew W. Jacobson
Title Proper : Approaches to Motion-Corrected PET Image Reconstruction from Respiratory Gated Projection Data
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : In past years, the conventional practice in Positron Emission Tomography (PET) hasbeen to reconstruct images while ignoring the effects of anatomical motion in the patient.When motion is ignored, a PET scanner acts something like a conventional optical camerawith the shutter open: one obtains the superposition of images of the object as it appearsin various phases of motion. Thus, the image exhibits a degree of blur that is related tothe motion magnitude. Until recently, the drawbacks of ignoring object motion has beenignored due to limitations in the spatial resolution of early PET scanners. The magnitudeof anatomical motion was not always substantial enough, in comparison to the scannerresolution, for motion correction to promise any benefit. However, with the improvementof scanner resolution over time, motion-related blur is becoming a limiting factor in theresolution achievable in PET reconstruction.This problem has been compounded by changing trends in the application of PET. Inearly years, PET was applied mainly in the research of the brain, where the relativelysmall movements of the head made motion effects..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject : Electericl tess
: برق
electronic file name : TL44855.pdf
Title and statement of responsibility and : Approaches to Motion-Corrected PET Image Reconstruction from Respiratory Gated Projection Data [Thesis]
 
 
 
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