Impact of breath hold on regional nodal irradiation and heart volume in field in left breast cancer adjuvant irradiation.

Purpose: Compared to the free-breathing technique, adjuvant left breast irradiation after breast-conserving surgery or mastectomy using the breath-hold method significantly reduces the heart mean dose, Left anterior descending artery, and ipsilateral lung doses. Movement with deep inspiration may also reduce heart volume in the field and regional node doses.

Materials And Methods: Pre-radiotherapy planning CT was performed in the free-breathing, and breath-hold techniques using RPM, demographic information, clinicopathological data, heart volume in the field, heart mean dose, LAD mean dose, and regional nodal doses were calculated in both free breathing and DIBH.

Evaluation of the Effect of Axillary Radiotherapy Dose and the Development of Lymphedema in Breast Cancer Patients.

Purpose: The present study is aiming to correlate different radiotherapy techniques, fractionations, and doses received by each axillary LN level and axillary vessels with the development of breast cancer-related lymphedema (BCRL).

Methods And Materials: We retrospectively studied 181 female breast cancer patients who were diagnosed and treated by radiation therapy during the period from January 2012 to December 2017. The radiotherapy treatment plans were recalled from the archives.