Pediatric craniosynostosis computed tomography: an institutional experience in reducing radiation dose while...

Area of Science:

• Medical Imaging
• Pediatric Radiology
• Radiation Oncology

Background:

• Children with craniosynostosis often require multiple CT scans, leading to cumulative radiation exposure.
• Minimizing radiation dose in pediatric imaging is crucial for long-term health outcomes.

Purpose of the Study:

• To evaluate a new lower-dose CT protocol for pediatric craniosynostosis.
• Assessed compliance, radiation dose reduction, and clinical image quality of the new protocol.

Main Methods:

• Implemented a modified CT protocol using 100 kV, 5 mAs, and iterative reconstruction for pediatric craniosynostosis.
• Collected radiation dose indices for routine (n=22) and low-dose (n=135) CT protocols.
• Neuroradiologists assessed image quality and diagnostic confidence in a subset of low-dose studies (n=50).

Main Results:

• The low-dose CT protocol demonstrated high compliance.
• Achieved a 98% reduction in CTDIvol and up to a 67-fold reduction in effective dose.
• Radiologists reported high diagnostic confidence and found additional radiation unnecessary.

Conclusions:

• The low-dose CT craniosynostosis protocol substantially reduces radiation exposure in children.
• Image quality and diagnostic confidence were maintained with the reduced radiation dose.
• This protocol offers a safer alternative for pediatric craniosynostosis imaging.