Abstract
A new approach based on electrical capacitance tomography (ECT) and electrical resistance tomography (ERT) is proposed to providing real-time 3D images for revision total hip replacements (THRs), attempting to navigate a drilling/milling tool in the femoral bone during the surgery. An ECT/ERT dual-modality sensor adopts the conventional ECT sensor structure with internal electrodes and voltage excitation. The capacitance and conductance are measured by an impedance analyzer based system. With the prior knowledge of the shape and diameter of the femoral bone and the drilling/milling tool, the 3D imaging process during the revision THR surgery can be simplified to estimate the cross-sectional position of the femur and the cross-sectional and axial position of the drilling/milling head. Experiments were carried out with an aluminum rod inserted in empty cavity of a cemented femoral bone surrounded by saline solution. The cross-sectional position of the femur is derived by a weighted mean method and the axial position by a linear function. 3D images for visualizing the revision THR process is generated in MatLab. The initial result is promising, providing the possibility of visualizing the surgery process using the ECT/ERT dual-modality.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
