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Effectiveness of algorithms artifacts reduction in tomographic images

Grant number: 14/17744-5
Support Opportunities:Scholarships in Brazil - Post-Doctorate
Effective date (Start): June 01, 2015
Effective date (End): August 31, 2017
Field of knowledge:Health Sciences - Dentistry - Dental Radiology
Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Francisco Haiter Neto
Grantee:Karla de Faria Vasconcelos
Host Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil
Associated scholarship(s):16/10142-5 - Validation of a metal artefact reduction algorithm in CBCT images of root filled teeth: a clinical study, BE.EP.PD


The use of advanced methods such as cone beam computed tomography may help decision making in the diagnosis of the bucomaxillofacial region. However, the literature shows reduced accuracy of this imaging modality in the presence of high-density materials, due to the interference of artifacts. The application of algorithms called metal artefact reduction (MAR) has been suggested to minimize these artifacts. However, it has been observed a great controversy related to the effectiveness of this tool. Given these facts, this project aims to evaluate the effectiveness of the implementation of MAR algorithms available in three different scanners: 1) Picasso Master 3D ® (Vatech, Hwaseong, South Korea); 2) ProMax ® (Plameca, Helsinki, Finland) and 3) Cranex 3D® (Soredex, Tuusula, Finland) through quantitative evaluation. It will be made 15 phantoms containing within them up to three cylinders, made of dental regular materials of high density: titanium, gutta-percha and metal alloy of copper-aluminum (CuAl). The phantoms will be scanned with and without the selection of MAR and then the mean and standard deviation of the gray values of the image and the contrast-to-noise ratio will be obtained. The measures will be performed twice, by the same examiner, with a minimum interval of 30 days between the analyzes, using the OnDemand3D® software (Cybermed, Seoul, Republic of Korea), in order to assess the real contribution of the MAR tool in suppressing artifacts. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
HUANG, YAN; CELIKTEN, BERKAN; VASCONCELOS, KARLA DE FARIA; PINHEIRO NICOLIELO, LAURA FERREIRA; LIPPIATT, NICHOLAS; BUYUKSUNGUR, ARDA; JACOBS, REINHILDE; ORHAN, KAAN. Micro-CT and nano-CT analysis of filling quality of three different endodontic sealers. Dentomaxillofacial Radiology, v. 46, n. 8, . (14/17744-5)
CODARI, MARINA; VASCONCELOS, KARLA DE FARIA; PINHEIRO NICOLIELO, LAURA FERREIRA; NETO, FRANCISCO HAITER; JACOBS, REINHILDE. Quantitative evaluation of metal artifacts using different CBCT devices, high-density materials and field of views. Clinical Oral Implants Research, v. 28, n. 12, p. 1509-1514, . (14/17744-5)
VASCONCELOS, KARLA DE FARIA; CODARI, MARINA; QUEIROZ, POLYANE MAZUCATTO; PINHEIRO NICOLIELO, LAURA FERREIRA; FREITAS, DEBORAH QUEIROZ; SFORZA, CHIARELLA; JACOBS, REINHILDE; HAITER-NETO, FRANCISCO. The performance of metal artifact reduction algorithms in cone beam computed tomography images considering the effects of materials, metal positions, and fields of view. ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY, v. 127, n. 1, p. 71-76, . (14/17744-5)
CELIKTEN, BERKAN; JACOBS, REINHILDE; VASCONCELOS, KARLA DEFARIA; HUANG, YAN; NICOLIELO, LAURA FERREIRA PINHEIRO; ORHAN, KAAN. Assessment of Volumetric Distortion Artifact in Filled Root Canals Using Different Cone-beam Computed Tomographic Devices. JOURNAL OF ENDODONTICS, v. 43, n. 9, p. 1517-1521, . (14/17744-5)

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