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Updated: Jul 26, 2026
11:38
Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
Published on: July 3, 2014
Cardiac doses in post-operative breast irradiation
S A Fuller1, J L Haybittle, R E Smith
1Department of Clinical Oncology, King's College Hospital, London, UK.
Summary
Modern breast irradiation techniques significantly reduce cardiac radiation exposure in breast cancer patients. This finding is crucial for decreasing the risk of heart disease following treatment.
Area of Science:
- Oncology
- Radiotherapy
- Cardiology
Background:
- Cardiac radiation exposure during breast irradiation is a risk factor for heart disease.
- Previous radiotherapy techniques may have delivered higher doses to the heart and coronary arteries.
Purpose of the Study:
- To analyze factors influencing cardiac radiation dose during primary breast irradiation.
- To compare cardiac radiation doses between historical and modern breast irradiation techniques.
Main Methods:
- Retrospective and prospective study of 28 breast cancer patients (Stage I/II).
- Computed tomography (CT) scans and 3D reconstruction of cardiac and lung structures.
- Superimposition of original dose distributions to estimate cardiac and coronary artery radiation doses.
Main Results:
- Modern techniques (Group 2) significantly decreased the heart volume irradiated to 5 Gy compared to older techniques (Group 1) for left-sided tumors.
- Patients in Group 1 (1957-1984) received higher cardiac radiation doses than Group 2 (1988-1989).
Conclusions:
- Modern breast irradiation techniques substantially reduce cardiac radiation exposure.
- This reduction in dose is expected to lower the incidence of subsequent cardiac-related disease in breast cancer survivors.
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