Comparative analysis of the absorbed dose in the heart and anterior descending branch of the left coronary artery (LAD) in patients with left-sided breast cancer who received radiotherapy using 3D-CRT, IMRT and VMAT techniques.

Purpose: The purpose of this study was to compare the absorbed dose distributions within the heart and lad in patients with left-sided breast cancer who underwent radiotherapy using 3D-CRT, IMRT and VMAT techniques.

Methods: The treatment plans of 11 patients with left-sided breast cancer were analyzed. All of the patients were irradiated in our facility with DIBH 3D-CRT.

Visualization of dose distribution in intraoperative electron beam Radiotherapy based on ultrasound images.

Purpose: The purpose of this study was to develop a method for dose distribution visualization in the case of Electron Beam Intraoperative Radiotherapy based on the images obtained in the operating room. This cannot be relied on CT images obtained before surgery due to significant tissue deformation.

Methods: The ultrasound scanning is the only method to obtain 3-dimensional (3D) reconstruction of a patient's tissue under operating room conditions.