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Le contrôle régulier des appareils reste une des composantes essentielles de ce programme. Il nécessite l'implémentation permanente de procédures de tests sans cesse renouvelées au rythme de l'évolution de la technologie, des techniques de traitement et des exigences de sécurité des patients. Les modes opératoires associés à ces An ideal Mage-guided radiotherapy (IGRT) system should have three essential elements: three-dimensional (3-D) and, if possible, motion (fourdimensional (4-D)) assessment of the target volume, preferably 3-D volumetric information of soft tissue, including tumour volume; efficient comparison of the image data with reference data; and an efficacious and fast process for clinically meaningful intervention (preferably fully automated). The clinical introduction of on-line electronic Image-guided External Beam Radiotherapy External beam radiotherapy is the most common form of radiation treatment offered to cancer patients. It consists of irradiating the tumor using high energy X-rays and/or electrons using a machine called a medical linear accelerator. Most treatments consist of multiple X-ray beams pointed at the tumor Purpose Image-guided radiation therapy (IGRT) is used to precisely deliver radiation to a tumour to reduce the possible damage to the surrounding normal tissues. Clinics use various quality assurance (QA) equipment to ensure that the performance of the IGRT system meets the international standards set for the system. The objective of this study was to develop a low-cost and multipurpose module for evaluating image quality and dose. Methods A multipurpose phantom was designed to IMRT, IGRT, SBRT Advances in the treatment planning and delivery of radiotherapy Book and Media Reviews By John Meyer, 2nd, revised and extended edition, ISBN 978-3-8055-9680-0, Basal, Karger IGRT and ART phantoms are used in radiotherapy to evaluate respiration induced external/internal motion correlation and prediction as well as the accuracy of radiotherapy equipment enabling the latter to deliver the 35 appropriate dose at the correct instant in time. The timing and accuracy of the delivery is particularly treatment Novel techniques of prostate cancer radiotherapy require increased precision, which is allowed by Image Guided Radiation Therapy (IGRT), using fiducial markers and orthogonal radiographs, cone Image guided radiotherapy (IGRT) in pediatrics provides a means for reduction of treatment volumes by permitting for the use of highly conformal plans with smaller treatment margins. IGRT may additionally allow for dose escalation and adaptive radiotherapy strategies. Current practice patterns and clinical protocols support the use of weekly or daily IGRT as standard practice in pediatric brain-directed IGRT. However, the benefits of IGRT must be weighed against its costs Helical tomotherapy is a unique form of intensity-modulated radiotherapy (IMRT) based on a rotating x-ray fan beam. The term "tomotherapy" derives from tomo-graphic radio-therapy, literally meaning "slice" radiotherapy. Helical tomotherapy treatment delivery is conceptually similar to computerized tomographic (C