Radiothérapie conformationnelle des cancers de la prostate: apport de la contention pelvienne et de nouveaux repères de positionnement

SummaryPurpose uce errors in the positioning of patients treated with external conformai radiotherapy for prostate cancer, we evaluated both the use of an immobilization device and new fiducial markers. als and methods mobilization device consisted of an individual mold made of polyurethan foam. Two sets of skin markers located on the anterior tibial surfaces were used to identify the pelvic isocenter. The patientʹs position was evaluated by orthogonal port films which were then compared with the original simulation film. s s are presented with respect to orthogonal axes. Comparison with classic procedures without immobilization showed that use of the mold and new fiducial markers led to a decrease in set-up errors which were less than 5 mm. sion he use of an immobilization device and optimized techniques for patientsʹ positioning, conformal radiotherapy of prostate cancer is more accurate.