Open AccessPractical guidance in the use of image-guided radiotherapy systems
Author(s) -
A. Pastorino,
L. Todisco,
E. Cazzulo,
L. Berretta,
Antonio Maria Orecchia,
Giuseppe Pozzi,
Marcia Barbero,
P. Franzone,
Renzo Corvò
Publication year - 2016
Publication title -
working paper of public health
Language(s) - English
Resource type - Journals
ISSN - 2279-9761
DOI - 10.4081/wpph.2016.9199
Subject(s) - image guided radiation therapy , visualization , computer science , modalities , medical physics , radiation treatment planning , set (abstract data type) , radiation therapy , computer vision , artificial intelligence , medical imaging , medicine , radiology , social science , sociology , programming language
From mega-voltage portal images acquired on an electronic system (EPID), technological research has developed 3D and recently 4D volumetric verification modalities, allowing a direct visualization of the target, a direct comparison with the planning-TC and an optimization of the treatment (reduction of set-up errors, verification of the need for re-planning), leading to the very modern Image Guided RadioTherapy (IGRT). IGRT allows different technical solutions through direct or indirect visualization of the tumor and the acquisition of pre-treatment verification images, allowing to identify, quantify and correct errors related to set-up and organ-tumor motion, obtaining a greater compliance of the delivered dose, decreasing the risk of "geographic miss" and toxicity to healthy tissues and reducing the margins from CTV to PTV for the implementation of "dose escalation" protocols.