High dose radiation (HDR) brachytherapy is an internal radiotherapy modality used for local cancer treatment that uses a single HDR seed, that travels inside a patient up to the cancer tumor by means of implants (catheters, needles, applicators). The success of this type of treatment is in part related to the accurate localization of the implants inside the patient by means of 3D medical imaging. 3D coordinates are used for optimizing the delivered dose to the tumor, while sparing surrounding healthy tissues. Currently in clinics, these coordinates can be identified manually or automatically from the 3D medical images but there can be errors when implants overlap, there is not sufficient contrast to identify them or in the case of CT scan, the slice thickness is too high. The goal of this project is to accurately reconstruct these implants with the help of an electromagnetic tracking (EMT) technology and align them in a 3D medical image reference frame (CT scan), using rigid transformation algorithms such as Iterative Closest Point (ICP).

The presentation will be given in English and the slides will be in English.