Shielded door

RF-shieldedfor radiology servicesfor nuclear medicine

Product Introduction
Designed for MRI facilities and research environments, this pneumatic/motorized sliding RF shielded door provides magnetic compatibility and high shielding performance. It is specified to achieve shielding effectiveness of ≥100dB at 150MHz in a 3.0T magnetic field and to meet anti-interference compatibility requirements for MRI equipment. For high-frequency laboratory applications (above 1GHz), the door can be supplied with a multi-layer metal composite construction (copper + aluminum) and ventilation waveguide windows with cut-off frequency ≥2GHz. Triple-fold door configuration available.

Product Performance

• Process requirements: Copper plate components are manufactured with seamless full welding.
• Contact resistance: Contact resistance at joints between door and frame < 0.01Ω.
• Insulation impedance: ≥1000MΩ (measured at 500V DC).
• Load-bearing capacity: Motorized/pneumatic door rated for ≥500kg static load.
• Emergency unlocking: Manual emergency release device provided for fail-safe operation.
• Non-magnetic design: Non-magnetic components (e.g., locks, fittings) used to preserve magnetic field uniformity.

Technical Parameters
Frequency range： | SE Requirements： | Test Standard：
10kHz-100MHz | ≥100dB (150MHz: ≥90dB) | GB/T 12190-2021
300MHz-1GHz | ≥80dB | ISO 11132-1
1GHz-10GHz | ≥70dB (Optional) | IEEE 299-2006

Application Fields

• Department of Radiology: Imaging diagnosis and interventional procedures using X-rays, gamma rays or related imaging to visualize internal anatomical structures.
• Department of Radiation Oncology: Localized therapeutic modalities using ionizing radiation (X-rays, electron beams, proton/particle therapy) for cancer treatment, requiring controlled RF environment.
• Department of Nuclear Medicine: Diagnostic and therapeutic workflows combining radiotracers and imaging; requires RF shielding to prevent interference with detection and imaging equipment.

Specifications / Technical Characteristics

• Shielding effectiveness: Designed to achieve ≥100dB at 150MHz in a 3.0T environment.
• Construction: Multi-layer metal composite (copper + aluminum) option for high-frequency performance.
• Ventilation: Waveguide ventilation windows with cut-off frequency ≥2GHz.
• Welding: Seamless full welding for copper plate components.
• Contact resistance: <0.01Ω at door-frame joints.
• Insulation impedance: ≥1000MΩ (500V DC test).
• Drive: Motorized/pneumatic sliding mechanism with load-bearing capacity ≥500kg.
• Emergency: Manual emergency release device included.
• Materials: Non-magnetic components to preserve magnetic field uniformity.