No abstract available

[en] The authors report a study which aimed at determining the optimal radiotherapy technique for a patient operated from a bilateral breast cancer with ganglionary attack and peculiar thoracic conformation. A dosimetric study has been performed. Target volumes and lung and heart coverages have been compared for three techniques: bi-dimensional and three-dimensional radiotherapy, and arc-therapy. It appears that arc-therapy would allow a dosimetric and therapeutic duration gain without improving the target volume coverage while increasing doses delivered to organs at risk. Short communication

[en] A CT acquisition during a free breathing examination generates images of poor quality. It creates an uncertainty on the reconstructed gross tumour volume and dose distribution. The aim of this study is to test the feasibility of a breath hold method applied in all preparation and treatment days. Five patients received a thoracic radiotherapy with the benefit of this procedure. The breathing of the patient was measured with a spirometer. The patient was coached to reproduce a constant level of breath-hold in a deep inspiration. Video glasses helped the patients to fix the breath-hold at the reference level. The patients followed the coaching during preparation and treatment, without any difficulty. The better quality of the CT reconstructed images resulted in an easier contouring. No movements of the gross tumour volume lead to a better coverage. The deep breath hold decreased the volume of irradiated lung. This method improves the reproducibility of the thoracic irradiation. The decrease of irradiated lung volume offers prospects in dose escalation and intensity modulation radiotherapy. (authors)

[en] In the situations where a technique with five beams is used, two ballistics are possible in the following situations: cardiac orifice and antrum in preoperative situation and cardiac body and antrum in post operative situation. (N.C.)

[en] Three articles are relative to the quality of treatments, in their tolerance, quality of positioning, and tolerance and response with a combined therapy such radiotherapy and chemotherapy. Dosimetry, protection of organs and the response rate without toxicity are clearly detailed. It concerns liver and colorectal cancers. (N.C.)

[en] This is a communication on the exclusive brachytherapy in non at small cells bronchi carcinomas. The results on 199 patients has shown that the endo bronchi brachytherapy is a top quality alternative therapy. The early and delayed tolerances of this treatment are very satisfying. (N.C.)

[en] Seven articles concern the digestive system cancer, mixing of images, toxicity of the chemoradiotherapy, comparison of dosimetry tools, pancreas cancer, rectum cancer, treated by chemoradiotherapy. (N.C.)