A New Approach in Metal Artifact Reduction for CT 3D Reconstruction

Authors:
Valery Naranjo;Roberto Llorens;Patricia Paniagua;Mariano Alcañiz;Salvador Albalat
Affiliations:
LabHuman - Human Centered Technology, Universidad Politécnica de Valencia, Spain;LabHuman - Human Centered Technology, Universidad Politécnica de Valencia, Spain;LabHuman - Human Centered Technology, Universidad Politécnica de Valencia, Spain;LabHuman - Human Centered Technology, Universidad Politécnica de Valencia, Spain;LabHuman - Human Centered Technology, Universidad Politécnica de Valencia, Spain
Venue:
IWINAC '09 Proceedings of the 3rd International Work-Conference on The Interplay Between Natural and Artificial Computation: Part II: Bioinspired Applications in Artificial and Natural Computation
Year:
2009

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Metal artifact reduction in dental CT images using polar mathematical morphology

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Abstract

The 3D representation of CT scans is widely used in medical application such as virtual endoscopy, plastic reconstructive surgery, dental implant planning systems and more. Metallic objects present in CT studies cause strong artifacts like beam hardening and streaking, what difficult to a large extent the 3D reconstruction. Previous works in this field use projection data in different ways with the aim of artifact reduction. But in DICOM-based applications this information is not available, thus the need for a new point of view regarding this issue. Our aim is to present an exhaustive study of the state of the art and to evaluate a new approach based in mathematical morphology in polar domain in order to reduce the noise but preserving dental structures, valid for real-time applications.