par Balikdjian, Daniel 
;Regnier, René ;Marechal, Jacqueline
Référence Acta oto-rhino-laryngologica Belgica, 32, 2, page (124-131)
Publication Publié, 1978
;Regnier, René ;Marechal, Jacqueline Référence Acta oto-rhino-laryngologica Belgica, 32, 2, page (124-131)
Publication Publié, 1978
Article révisé par les pairs
| Résumé : | The combined use of the CAT (computed axial tomograph) and computer dosimetry allows better calculation of dose distribution in radiotherapy. Treatment plans can be calculated so rapidly that several may be drawn up until one with satisfactory dose distribution is achieved. In a first program, the dose distribution is given on a course matrix; owing to the rapidity of this conventional program and the possibilities of changing parameters, it renders it possible to seek the optimal solution for the treatment. A second, more exact program then puts into operation the solution found, and supplies documents that characterize the treatment plan, the irradiation protocol and the dose distribution, in the form of isodose curves. This combined method outlines the volumes to be treated, gives better insight into the arrangement of organs to be protected and allows evaluation of the variations of the absorption coefficients as a function of the density of the tissues through which the irradiation bundles pass. Accordingly, highly accurate treatment plans, optimally adjusted to the patient's condition may be drawn up. Also, the CAT by itself allows monitoring of the efficacy of the irradiations and regular surveillance of the irradiated site during the months after the end of the treatments. |
