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Updated: May 29, 2026
11:38
Voluntary Breath-hold Technique for Reducing Heart Dose in Left Breast Radiotherapy
Published on: July 3, 2014
[Radiation-related heart toxicity]
1Radiothérapie, institut Sainte-Catherine, 1750, chemin du Lavarin, 84000 Avignon, France. a.mege@isc84.org
Summary
Radiotherapy for thoracic cancers can cause heart complications. Reducing heart radiation dose, ideally below 30 Gy, is crucial for preventing radiation-induced heart disease in cancer survivors.
Area of Science:
- Oncology
- Cardiology
- Radiation Oncology
Context:
- Thoracic radiotherapy for cancers like Hodgkin lymphoma and breast cancer poses risks of late radiation-induced heart complications.
- Radiation-induced coronaropathy is a primary cause of cardiac morbidity, with earlier studies estimating a relative risk of 2-3.
- Cardiovascular risk factors, including chemotherapy, can exacerbate radiotherapy's cardiotoxicity.
Purpose:
- To review the late radiation-induced cardiac complications following thoracic radiotherapy.
- To highlight the impact of dose reduction and advanced techniques like conformational radiotherapy in mitigating cardiac toxicity.
- To emphasize the ongoing need for further dose reduction and collaborative care between oncologists and cardiologists.
Summary:
- Conformational radiotherapy has significantly reduced cardiac mortality by optimizing dose delivery to minimize heart exposure.
- Cardiac toxicity is less significant when the heart receives less than 30 Gy.
- Even small increases in mean heart dose (1 Gy) elevate cardiotoxic risk by 4%, underscoring the need for continued dose reduction.
Impact:
- Prolonged cancer patient survival and the use of new cardiotoxic drugs necessitate ongoing efforts to minimize heart dose.
- A collaborative approach between radiation oncologists and cardiologists is essential for detecting and managing long-term cardiac complications.
- Further research and technological advancements are needed to further reduce the risk of radiation-induced heart disease.
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