University of Twente Student Theses


Intraoperative navigation and intraoperative CT in orthopaedic oncology surgery

ENDE, R.P.J. VAN DEN (2015) Intraoperative navigation and intraoperative CT in orthopaedic oncology surgery.

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Abstract:The aim of this thesis was 1) to perform a pilot phantom study on navigated allograft reconstruction as a first step in ultimately achieving intraoperative CT based navigated allograft reconstruction and to compare this method to the currently used freehand method and 2) to perform a clinical evaluation of the use of the intraoperative CT scanner in orthopaedic oncology surgery. In the pilot phantom study, navigated allograft reconstruction using a reconstruction planning made from an intraoperative CT scan of the bone defect led to smaller and more consistent cortex gap volumes compared to conventional freehand allograft reconstruction. Implementation of this technique in clinical practice is expected to increase allograft fit, but additional challenges have to be solved to accomplish this, including preoperative scanning of the allograft, (semi-)automatic image registration of the allograft with patient bone and (semi-)automatic intraoperative segmentation of the bone defect. Experiences with the intraoperative CT scanner during this graduation project have shown that the intraoperative CT scanner is a substantial improvement for orthopaedic oncology surgery. Main advantages were 1) easy, accurate registration on any anatomy, 2) visualizing the actual intraoperative anatomy and 3) intraoperative 3D imaging (e.g. to accurately verify screw positions).
Item Type:Essay (Master)
Leiden University Medical Center, Leiden, Netherlands
Leiden University Medical Center, Leiden, Netherlands
Faculty:TNW: Science and Technology
Subject:44 medicine, 50 technical science in general
Programme:Technical Medicine MSc (60033)
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