The mobile panoramic X-ray shield is a medical radiation protection device designed for use in radiology departments, imaging centers, operating rooms, and emergency settings. It employs physical shielding to isolate high-energy radiation sources—such as X-rays effectively—thereby protecting medical staff, patients, and the surrounding environment from unnecessary radiation exposure. As a vital component of modern medical radiation protection systems, the mobile screen’s flexible, movable design overcomes the limitations of fixed shielding facilities in scenarios such as bedside radiography, interventional procedures, and dynamic diagnostic or therapeutic interventions; it is a key piece of equipment for implementing the "shielding" measure within the "time, distance, and shielding" triad of radiation protection principles.
The core shielding capability of the protective screen relies on high-density lead materials or lead-composite panels. Leveraging the high density and high atomic number of lead, the screen significantly attenuates X-ray intensity through absorption and scattering.
Opaque Section: Typically constructed using stainless steel-lead composite panels or a structure featuring a lead-plate core encased in high-quality cold-rolled steel or stainless steel sheeting. Lead-equivalent specifications vary; the opaque sections of mobile screens generally offer ratings ranging from 1.0 mmPb to 2.0 mmPb, effectively shielding against the vast majority of scattered radiation.
Observation Window: Equipped with highly transparent lead glass (or lead-acrylic) or lead glass laminated with an explosion-proof film. This provides radiation protection while maintaining a clear, unobstructed view; common lead-equivalent ratings include 0.5 mmPb, 0.8 mmPb, 1.0 mmPb, and higher. High-quality lead glass offers a light transmittance of at least 80% at a wavelength of 500 nm, ensuring operators can clearly monitor the patient's condition and equipment operation.
High Flexibility: Unlike fixed lead rooms or overhead suspended screens, mobile protective screens require no installation—they are ready for immediate use and can be repositioned to suit clinical workflows.
Comprehensive Protection: Features such as side protection (e.g., models with side wings) and bottom lead curtains minimize lateral and downward leakage of scattered radiation.
Ergonomic Design: Some models offer adjustable height settings to accommodate operators of different statures, thereby reducing occupational fatigue; a transparent viewing window facilitates communication between medical staff and patients, as well as the monitoring of the patient's condition.
Effective height: Typically no less than 1800 mm to ensure coverage of the areas containing major human organs.
Total width: Single-panel screens are usually at least 900 mm wide; double or triple-panel screens can be customized as needed (common specifications include 1800 x 1600 mm).
Observation window area: The effective area is typically at least 100 mm × 150 mm, positioned at a height of no less than 900 mm to ensure an unobstructed field of view.
Lead equivalence standards:
Overall protective lead equivalence: No less than 0.5 mmPb.
Transparent observation window section: 0.5 mmPb – 1.0 mmPb (depending on the specific voltage rating; e.g., no less than 0.5 mmPb for a 120 kV tube voltage).
Opaque frame section: 1.0 mmPb – 2.0 mmPb.
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