A system for automated quality assurance in radiotherapy of a therapist's registration was designed and tested in clinical practice. The approach compliments the clinical software's automated registration in terms of algorithm configuration and performance, and constitutes a practical approach for ensuring safe patient setups. Per our convergence analysis, evolutionary algorithms perform better...

Nous pr esentons un algorithme de segmentation multi-canaux qui est d eduit de la fonctionnelle de Mumford et Shah. La m ethode est un algorithme de croissance sur une image \vectorielle". Les applications pr esent ees sont la discrimination de textures et la d etection d'objets sur fond naturel.

Background: Cone-beam computed tomography (CBCT) scanners for image-guided radiotherapy are in clinical use today, but there has been no consensus on uniform acceptance to verify the CBCT image quality yet. The present work proposed new methods to fully evaluate the performance of CBCT in its three-dimensional (3D) reconstruction space. Materials and Methods: Compared to the traditional methods...

Metastatic seeding along image-guided brain biopsy tracts is an uncommon phenomenon. We report a case of meningeal glioblastoma (GBM) metastasis at the site of a previous image-guided biopsy site, which developed 14 months after completing concurrent chemo-radiotherapy. This is the first reported case of successful treatment of an intracranial GBM metastasis with resection followed by radiother...

Background: To reduce uncertainties of patient positioning, the Computerized Tomography (CT) images acquired at the treatment planning time can be compared with those images obtained during radiation dose delivery. This can be followed during dose delivery procedure as Image Guided radiotherapy (IGRT) to verify the prescribed radiation dose delivery to the target as well as to monitor ...