Related Experiment Videos
Cardiac toxicity following thoracic radiation
Robert G Prosnitz1, Yu Husuan Chen, Lawrence B Marks
1Department of Radiation Oncology, Duke University, Box 3085 Duke University Medical Center, Durham, NC 27710, USA. robert.prosnitz@duke.edu
Seminars in Oncology
|July 15, 2005
Summary
Thoracic radiation therapy (RT) can cause heart damage in cancer patients. While modern techniques reduce cardiac exposure, further research is needed to prevent cardiotoxicity and improve long-term survival.
Area of Science:
- Cardiology
- Oncology
- Radiation Oncology
Background:
- Cardiotoxic effects of radiation therapy (RT) are well-documented in breast cancer and Hodgkin's disease survivors.
- Data on RT-induced cardiovascular disease in lung cancer patients is limited.
- Thoracic RT can deliver significant radiation doses to the heart, especially with older techniques.
Purpose of the Study:
- To review the cardiotoxic effects of thoracic RT in lung and breast cancer patients.
- To discuss the impact of older and modern RT techniques on cardiac health.
- To highlight the need for further research into cardiac injury and prevention.
Main Methods:
- Review of existing data on cardiotoxicity from thoracic radiation therapy.
- Comparison of cardiovascular outcomes between older and modern RT techniques.
- Discussion of ongoing research into methods for reducing cardiac radiation exposure.
Main Results:
- Older RT techniques led to high cardiac doses and increased cardiovascular morbidity and mortality.
- Modern RT techniques have reduced but not eliminated cardiac radiation exposure.
- Conflicting data exists on the impact of modern RT on late cardiovascular outcomes.
Conclusions:
- Reducing cardiac exposure to radiation is prudent, even with modern techniques.
- Techniques like respiratory gating and intensity-modulated radiation therapy are under investigation to further minimize cardiac dose.
- More research is required to quantify cardiac injury and develop effective preventative strategies.