Title :
Metal artefact correction algorithm based-on DSAT technique for CT images
Author :
Osman, N.D. ; Salikin, M.S. ; Saripan, M.I. ; Aziz, M.Z.A. ; Daud, N.M.
Author_Institution :
Adv. Med. & Dental Inst., Univ. Sains Malaysia, Kepala Batas, Malaysia
Abstract :
This paper presents a correction algorithm for metal artefacts in CT images using a novel technique known as dual-step adaptive thresholding (DSAT). The proposed artefact correction algorithm was applied to selected artefactual phantom and clinical CT images. The missing projection data due to metal is detected and extracted by double-thresholding technique. The DSAT-based algorithm allows significant reduction of the artefact and preserves most of the anatomical structures in the corrected CT images.
Keywords :
computerised tomography; image capture; image reconstruction; medical image processing; phantoms; CT image metal artefact coorection; DSAT technique-based artefcat coorection algorithm; DSAT-based algorithm; anatomical structure preservation; artefact correction algorithm application; artefact reduction; artefactual phantom image; clinical CT image; computed tomgraphy images; corrected CT images; corrected computed tomography image; double-thresholding technique; dual-step adaptive thresholding; metal artefact correction algorithm; missing projection data; projection data detection; projection data extraction; Computed tomography; Image reconstruction; Image segmentation; Imaging phantoms; Interpolation; Metals; Phantoms; artefact; computed tomography; image segmentation;
Conference_Titel :
Biomedical Engineering and Sciences (IECBES), 2014 IEEE Conference on
DOI :
10.1109/IECBES.2014.7047513
