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Related Experiment Video

Updated: Jul 26, 2026

Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy

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.

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology

|September 1, 1992

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.

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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.