Sparing of critical organs in radiotherapy of mediastinal lymphoma

We compared three different treatment planning techniques to decrease the dose to the organs at risk in female patients with mediastinal Hodgkin lymphoma. We evaluated opposed fields (ap-pa), 3D conformal 4-fields and as a helical intensity modulated radiation therapy (IMRT) the tomotherapy technique (TT). Dose conformation with tomotherapy plans was better, with greater sparing of the heart with left ventricle and coronary arteries. The breasts and the lungs received a higher median dose with tomotherapy than with conventional treatment.