Electronic Cleansing of Digital Data Sets

A method of processing a 3-dimensional Computed Tomography Colonography data set to remove tagged material is disclosed. The method involves the preliminary processing step of classifying voxels in the data set as corresponding to air, tagged material or colon tissue. Methods of overcoming erroneous...

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Bibliographic Details
Main Authors MARK BRENDAN SUGRUE, PAUL FRANCIS WHELAN, KEVIN PETER ROBINSON
Format Patent
LanguageEnglish
Published 13.01.2010
Subjects
CALCULATING
COMPUTING
COUNTING
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
MEDICAL OR VETERINARY SCIENCE
PHYSICS
SURGERY
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Summary:A method of processing a 3-dimensional Computed Tomography Colonography data set to remove tagged material is disclosed. The method involves the preliminary processing step of classifying voxels in the data set as corresponding to air, tagged material or colon tissue. Methods of overcoming erroneous classification of Partial Volume air/tagged material boundary voxels are disclosed. Specific tagged material voxels at the colon tissue/tagged material interface are isolated. The output of an edge recovery algorithm is recorded for the isolated tagged material voxels identified returning a value in excess of a threshold, to provide a plurality of edge recovered voxels. Each edge recovered voxel is subsequently reclassified as a colon tissue voxel and the tagged material voxels are deleted from the data set and reclassified as air.
Bibliography:Application Number: GB20080009616