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Pediatric Computed Tomography Dose Optimization Strategies: A Literature Review
Khalid Mohammed Salim Al Mahrooqi1, Curtise Kin Cheung Ng1, Zhonghua Sun1
1Department of Medical Radiation Sciences, Curtin University, Perth, Western Australia, Australia.
Summary
Optimizing computed tomography (CT) radiation dose in pediatric patients is crucial. This review identifies dose-saving techniques and proposes optimized CT protocols for children, aiding medical professionals.
Area of Science:
- Radiography
- Medical Imaging
- Pediatric Radiology
Background:
- Computed tomography (CT) significantly contributes to medical radiation exposure.
- CT use is increasing, especially in pediatric populations.
- Optimizing CT dose for children presents unique challenges compared to adults.
Purpose of the Study:
- To review current CT dose-saving techniques specifically for pediatric patients.
- To discuss strategies for optimizing CT protocols in children.
- To propose optimized pediatric CT protocols.
Main Methods:
- A comprehensive literature search was performed across multiple databases (Medline, PubMed, Scopus, etc.).
- Keywords included CT, pediatric, optimization, protocol, and radiation dose.
- The search focused on articles published between 2004 and 2014.
Main Results:
- Seventy-seven relevant articles were identified.
- Key dose optimization strategies discussed include tube voltage/current, iterative reconstruction, bowtie filters, and scan parameters (pitch, collimation, time).
- An example of age- and size-specific optimized pediatric CT protocols for 64-slice scanners was developed.
Conclusions:
- Various technical strategies can optimize pediatric CT dose.
- The proposed protocols offer a framework for medical radiation technologists, radiologists, and physicists.
- Implementing optimized protocols is essential for minimizing radiation exposure in pediatric CT scans.
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