Evaluation of malignant lesions of the maxillomandibular complex, on the presence of metallic artifacts using computed tomography. / "Avaliação de lesões malignas dos maxilares na presença de artefatos dentários metálicos utilizando a tomografia computadorizada"
AUTOR(ES)
Sibele Pereira de Oliveira
DATA DE PUBLICAÇÃO
2004
RESUMO
Computed tomography is an important tool to determinate the diagnosis, treatment and follow up malignant lesions of the maxillomandibular complex. In many cases, it is the election exam to all of these purposes. One problem with CT is the artifacts that appear in the presence of metallic restorations, implants and metallic fixation screws or plates. These artifacts lead to misinterpretations of the images, making difficult to visualize lesions in these areas. The aim of this research was to evaluate CT images with different sections (axial and coronal) e to determine if the type of section can minimize the problem of dental metallic artifacts. Two calibrate examiners (oral and maxillofacial radiologists) analyzed 72 images (36 in axial slices and 36 in coronal slices) and graduate which images were best viewed. The results attested that there were no significant differences between axial and coronal images to reach the diagnosis in the presence of dental metallic artifacts, and there were a good concordance with both examiners. We conclude that the presence of dental metallic artifacts wasnt sufficient to disturb the precise location neoplasm of the soft tissue. It wasnt detected any dental metallic interference possible to misdiagnosis neither on axial images nor on coronal images. Coronal images presented a higher interference when comparing with axial images.
ASSUNTO(S)
metallic artefacts oral diagnosis malignant neoplasm of the maxilar tomografia computadorizada artefatos metálicos neoplasias malignas dos maxilare computed tomography diagnostico bucal
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