<abstract xmlns="http://www.w3.org/1999/xhtml"> Background: Fiducial markers are objects placed in the field of view of an imaging system for use as a point of reference or a measure. There is no information regarding suitable markers for joint models.Objectives: We compared the fiducial markers commonly used in X-ray, CT, and MRI imaging modalities.Methods: The markers tested were plastic balls, ceramic balls, passive reflective balls, liquid-filled balls, and steel balls. The balls were scanned using X-ray, CT, and MRI systems. The scanned X-ray images were reviewed if it the markers are able to be expressed. The tomographic images of CT and MRI were converted into 3D ball models and then the reconstructed shapes and dimensions of the balls were examined. The dimensional accuracy of expression and reconstruction was calculated in terms of the mean and the standard deviation.Results: There was no marker that can be expressed in all the imaging modalities. Alternatively, we propose a synthetic marker that is composed of a hard sphere and a fat tissue wrapping. The hard ball is for X-ray and CT imaging, while the fat tissue is for MRI imaging.Conclusion: A synthetic marker composed of a hard sphere and a fat tissue wrapping can a multimodal fiducial marker.</abstract>

Background: Fiducial markers are objects placed in the field of view of an imaging system for use as a point of reference or a measure. There is no information regarding suitable markers for joint models.Objectives: We compared the fiducial markers commonly used in X-ray, CT, and MRI imaging modalities.Methods: The markers tested were plastic balls, ceramic balls, passive reflective balls, liquid-filled balls, and steel balls. The balls were scanned using X-ray, CT, and MRI systems. The scanned X-ray images were reviewed if it the markers are able to be expressed. The tomographic images of CT and MRI were converted into 3D ball models and then the reconstructed shapes and dimensions of the balls were examined. The dimensional accuracy of expression and reconstruction was calculated in terms of the mean and the standard deviation.Results: There was no marker that can be expressed in all the imaging modalities. Alternatively, we propose a synthetic marker that is composed of a hard sphere and a fat tissue wrapping. The hard ball is for X-ray and CT imaging, while the fat tissue is for MRI imaging.Conclusion: A synthetic marker composed of a hard sphere and a fat tissue wrapping can a multimodal fiducial marker.

Brief communication (Original). Multimodal imaging fiducial markers for kinematic measurement of joint models

Department of Orthopaedic Surgery, Chosun University Hospital, Gyungbuk 712-702,

Department of Biomedical Engineering, Catholic University of Daegu, Gyungbuk 712-702,

Asian Biomedicine

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Background: Fiducial markers are objects placed in the field of view of an imaging system for use as a point of reference or a measure. There is no information...

Brief communication (Original). Multimodal imaging fiducial markers for kinematic measurement of joint models

Published Online: Feb 04, 2017

Page range: 509 - 516

DOI: https://doi.org/10.5372/1905-7415.0704.205

Keywords
Accuracy, fiducial marker, multimodal, registration

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Brief communication (Original). Multimodal imaging fiducial markers for kinematic measurement of joint models

Published Online: Feb 04, 2017

Page range: 509 - 516

DOI: https://doi.org/10.5372/1905-7415.0704.205

KeywordsAccuracy, fiducial marker, multimodal, registration

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Accuracy, fiducial marker, multimodal, registration