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   metal artifact suppression in dental cone beam computed tomography images using image processing techniques  
   
نویسنده johari masoumeh ,abdollahzadeh milad ,esmaeili farzad ,sakhamanesh vahideh
منبع journal of medical signals and sensors - 2018 - دوره : 8 - شماره : 1 - صفحه:12 -24
چکیده    Background: dental cone beam computed tomography (cbct) images suffer from severe metal artifacts. these artifacts degrade the quality of acquired image and in some cases make it unsuitable to use. streaking artifacts and cavities around teeth are the main reason of degradation. methods: in this article, we have proposed a new artifact reduction algorithm which has three parallel components. the fi rst component extracts teeth based on the modeling of image histogram with a gaussian mixture model. striking artifact reduction component reduces artifacts using converting image into the polar domain and applying morphological fi ltering. the third component fi lls cavities through a simple but effective morphological fi ltering operation. results: finally, results of these three components are combined into a fusion step to create a visually good image which is more compatible to human visual system. conclusions: results show that the proposed algorithm reduces artifacts of dental cbct images and produces clean images.
کلیدواژه artifact reduction ,cone beam computed tomography ,dental images ,morphological fi ltering
آدرس tabriz university of medical sciences, dental and periodontal research center, faculty of dentistry, department of oral and maxillofacial radiology, iran, university of tabriz, faculty of electrical and computer engineering, department of communications engineering, iran, tabriz university of medical science, dental and periodontal research center, faculty of dentistry, department of oral and maxillofacial radiology, iran, tabriz university of medical science, dental and periodontal research center, faculty of dentistry, department of oral and maxillofacial radiology, iran
پست الکترونیکی dr.v.sakhamanesh@gmail.com
 
     
   
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