Fluoroscopic imaging optimization in children during percutaneous nephrolithotrispy

Area of Science:

• Pediatric Urology
• Medical Imaging
• Radiation Oncology

Background:

• Radiation protection management emphasizes minimizing radiation exposure while preserving image quality, adhering to the As Low As Reasonably Achievable (ALARA) principle.
• Percutaneous nephrolithotomy (PCNL) in children involves fluoroscopic guidance, necessitating strategies to reduce radiation dose.
• Optimizing fluoroscopic imaging is crucial for pediatric procedures due to children's increased radiosensitivity.

Purpose of the Study:

• To compare radiation exposure, measured by Dose Area Product (DAP) and Fluoroscopy Time (FT), during pediatric PCNL before and after implementing a radiation dose reduction strategy.
• To evaluate the impact of the optimized fluoroscopy protocol on surgical outcomes in pediatric PCNL.
• To assess the feasibility and effectiveness of intraoperative radiation dose reduction techniques in pediatric urology.

Main Methods:

• A prospective study comparing two groups of children undergoing PCNL for kidney stones.
• Group 1 (n=56) underwent PCNL with an implemented radiation dose reduction strategy, including table positioning, pulsed fluoroscopy with last image hold, beam collimation, and a dedicated fluoroscopy technician.
• Group 2 (n=42) served as a control group, undergoing PCNL before the dose reduction strategy implementation.

Main Results:

• Dose Area Product (DAP) decreased by 44% (from 2.46 to 1.38 mGy m²) in the group with the radiation reduction strategy (p < 0.04).
• Total fluoroscopy time (FT) was significantly reduced by 55% (from 100.8s to 45s) after protocol implementation (p < 0.002).
• The optimized protocol achieved significant radiation dose reduction with minimal impact on image quality.

Conclusions:

• Optimization of fluoroscopic imaging significantly reduces radiation exposure in pediatric PCNL.
• The implemented reduced radiation protocol did not increase surgical complexity, operative time, or complication rates.
• This strategy effectively lowers radiation risks in a vulnerable pediatric population undergoing PCNL.