Radiation therapy and radiation surgery treatment system and...

A - Human Necessities – 61 – N

Patent

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A61N 5/10 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2249656

A radiosurgery and radiotherapy system to provide diagnostic imaging and target localization via a patient 3-D mapping means such as a CT scanner or MRI, patient positioning via a four degree of freedom of motion table, and a stereotactic Cobalt 60 therapy unit incorporating multiple sources to therapeutically irradiate a target is provided. Methods of radiosurgery and radiotherapy utilizing the system are also provided. A combination of radiation source configuration, 360 degree rotational characteristics of the therapy unit, and table movement will allow any size and shape of target to be irradiated to therapeutic levels while decreasing radiation exposure to surrounding healthy tissue. A radiation beam catcher which captures greater than 80 % and preferably greater than 90 % of the radiation from the radiation sources is also provided.

La présente invention concerne un système de radiochirurgie et de radiothérapie destiné au diagnostic par imagerie et à la localisation d'une cible au moyen de dispositifs de cartographie en trois dimensions tels qu'un scanner CT ou un IRM et de positionnement du patient au moyen d'une table orientable dans quatre directions. L'invention concerne également une unité de traitement stéréotaxique au Cobalt 60 à plusieurs sources d'irradiation pour le traitement thérapeutique d'une cible et des procédés de radiochirurgie et de radiothérapie utilisant ledit système. On peut combiner la configuration de la source d'irradiation, le dispositif de rotation à 360 degrés caractéristique de l'unité thérapeutique et le mouvement de la table pour irradier une cible de taille ou de forme quelconque à des niveaux thérapeutiques voulus, tout en diminuant l'exposition irradiante des tissus sains avoisinants. Le dispositif comporte un capteur de faisceau de rayonnement permettant de capturer plus de 80 %, voire de préférence plus de 90 % de l'irradiation émanant des différentes sources de rayonnement.

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