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Radiation risks from exposure to chest computed tomography
Michael V Huppmann1, William B Johnson, Marcia C Javitt
1Department of Radiology, Walter Reed Army Medical Center, Washington, DC, USA.
Computed tomography (CT) scans offer benefits but raise radiation exposure concerns. This review examines the risks and benefits of specific chest CT applications, including lung cancer screening, CT coronary angiography, and CT pulmonary angiography, to assess their appropriateness.
Area of Science:
- Radiology
- Medical Imaging
- Radiation Oncology
Background:
- Computed tomography (CT) technology has advanced significantly since 1972, leading to widespread clinical use.
- While CT scans are valuable for medical decision-making, some protocols lack robust scientific data supporting their appropriateness.
- Increasing CT utilization raises concerns about patient radiation exposure, particularly for unnecessary or undocumented indications.
Purpose of the Study:
- To evaluate the radiation risks and benefits of specific chest CT applications.
- To assess the appropriateness of CT scans in lung cancer screening, CT coronary angiography, and CT pulmonary angiography.
- To review the population radiation burden in relation to these diagnostic procedures.
Main Methods:
- Review of scientific literature on radiation risks and benefits.
- Analysis of appropriateness for specific clinical scenarios.
- Evaluation of population radiation burden.
Main Results:
- Lung cancer screening CT lacks data demonstrating mortality reduction.
- CT coronary angiography's clinical utility is still evolving.
- CT pulmonary angiography is a primary diagnostic tool for pulmonary emboli, with established risks and benefits.
Conclusions:
- Careful consideration of risks and benefits is crucial for CT utilization.
- Further research is needed to support the appropriateness of certain CT protocols.
- Balancing diagnostic yield with radiation exposure is essential for patient safety.
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