METHODS FOR METAL ARTIFACT REDUCTION IN CONE BEAM RECONSTRUCTION

Methods for reconstruction of a volume radiographic image acquire 2-D projection images of a subject at a plurality of acquisition angles and generate an initial 3-D volume image formed of image voxels according to the acquired 2-D projection images. An initial 3-D reconstruction metal mask is forme...

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1. Verfasser:	SCHILDKRAUT, Jay S
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING HANDLING RECORD CARRIERS IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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creator	SCHILDKRAUT, Jay S
description	Methods for reconstruction of a volume radiographic image acquire 2-D projection images of a subject at a plurality of acquisition angles and generate an initial 3-D volume image formed of image voxels according to the acquired 2-D projection images. An initial 3-D reconstruction metal mask is formed from voxels that have attenuation to x-rays indicative of metal. At least one voxel is removed from the initial 3-D reconstruction metal mask to form a refined 3-D reconstruction metal mask according to a distribution of pixel values that contribute to the corresponding data value for the at least one voxel. One or more 2-D projection images are modified according to the distribution of pixel values. A refined 3-D volume image is generated according to the modified 2-D projection images. A rendering of the refined 3-D volume image displays that includes at least a portion of the refined 3-D reconstruction metal mask.
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subjects	CALCULATING COMPUTING COUNTING HANDLING RECORD CARRIERS IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
title	METHODS FOR METAL ARTIFACT REDUCTION IN CONE BEAM RECONSTRUCTION
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