Study on the safety of simultaneous integrated boost and the importance of cardiac substructural dose assessment of hypofractionated radiotherapy after early left breast cancer breast-conserving surgery

Background and purpose: Adjuvant radiotherapy for breast cancer after early breast-conserving surgery has been recommended by the guidelines.However, the feasibility of hypofractionated radiotherapy with simultaneous integrated boost is not available.In this randomized controlled study, the cardiac dosimetry parameters and cardiac ultrasound indexe

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