Vessel-based Ultrasound Registration

In this study we aim to develop an automatic pelvic artery segmentation algorithm, which is required for future clinical implementation of US registration for surgical navigation. Various registration methods will be evaluated with the data of this study to obtain most optimal results. If automatic segmentation and registration is successful, the final accuracy of the developed US registration method for tumor tracking should be evaluated in future studies in patients eligible for surgical navigation. Eventually, we aim to replace the CBCT-scan with an automatic tracked US registration pipeline for a more efficient and accurate registration procedure, which could improve the applicability and accuracy of surgical navigation and patient outcomes.

Inclusion Criteria:≥ 18 years oldScheduled for laparotomyA clinical pre-operative abdominal CT scan is availablePatient provides written informed consentExclusion Criteria:Metal implants in the pelvic area which could influence the 3D modelling or tracking accuracyPatients with a pacemaker or defibrillatorPatient received pelvic-abdominal treatment, e.g. surgery or radiotherapy, between the pre-operative CT scan and laparotomy, which might altered the patient's anatomy