Radiation exposure with the NOMAD portable X-ray system.

Area of Science:

• Medical Imaging
• Radiation Safety
• Diagnostic Radiology

Background:

• Portable X-ray systems offer clinical advantages but require rigorous safety assessments.
• Evaluating radiation leakage, backscatter, and patient exposure is crucial for new devices.
• Regulatory compliance is paramount for the safe deployment of medical radiation equipment.

Purpose of the Study:

• To assess radiation safety parameters of a novel hand-held, battery-operated portable X-ray system.
• To quantify leakage radiation, backscatter, and patient exposure during system operation.
• To compare the safety profile of the portable X-ray system against established regulatory standards.

Main Methods:

• Radiation dose measurements were performed using DXTRR and water phantoms.
• Calibrated dosimetry equipment, including thermoluminescent dosimetry (TLD) and dosemeters, was utilized.
• Standardized exposure settings (60 kVp, 2.3 mA, 0.25 s) were employed for all tests.

Main Results:

• All measured backscatter and leakage radiation levels were significantly below FDA permissible limits (100 mR h(-1)).
• Operator exposure (finger, chest, eyes, gonads) was well within occupational safety guidelines.
• Film dose results aligned with manufacturer specifications, and a variance for use was granted.

Conclusions:

• The portable X-ray system (NOMAD) demonstrates radiation risks comparable to conventional dental radiographic units.
• Measured radiation doses for both patients and operators are confirmed to be below recommended safety levels.
• The findings support the safe use of this portable X-ray technology in clinical settings.