Comparison of fulfilling the criteria for critical organs in irradiation of patients with breast cancer using the deep inspiration breath-hold and free breathing techniques

Abstract Introduction: The aim of the study was to evaluate organ-at-risk dose sparing in treatment plans for patients with left-sided breast cancer irradiated Deep Inspiration Breath Hold (DIBH) and Free Breathing (FB) techniques. Material methods: Twenty were analyzed divided into two groups. Group A included 10 non-metastatic cancer, while group B involved metastatic spreading regional lymph nodes. All went through DIBH coaching. For planning purposes, CT scans obtained both FB. Mean heart (Dmean,heart), mean volume receiving 50% prescribed (V 50 ), V20 (V20L.lung), V10 (V10L.lung) V5 left lung (V5L.lung), PTV a greater than or equal 95% 95 [%]), maximum point (D max 107% reported. Results: In all 20 pairs plans, reduction by more half technique achieved, as well significant found V . 19 patients, use also reduced doses Gy, 5 Gy compared FB technique. Conclusions: Dosimetric analysis showed that free breathing don’t fulfill criteria (group B) A) plans. Radiation therapy results reduces majority procedure.