Webinaire CeRVIM : EMT to CT scan image registration of implants used in HDR brachytherapy
Isaac Neri Gomez Sarmiento
Laboratoire LVSN
Dép. de génie électrique et de génie informatique
Université Laval, et
Centre Intégré de Cancérologie – CHU de Québec – Université Laval
22 avril 2022, 11h
Résumé
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).
La présentation sera donnée en anglais et les diapos seront en anglais.
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