MRI room

stainless steelmagnetically shieldedsoundproof

Project overview
This project covers RF shielding and interior refurbishment for a 1.5T superconducting MRI room in a hospital. Scope includes the magnet (examination) room, adjacent control room finishes, RF shielding installation, floor base treatment, wall and ceiling finishes, non‑magnetic accessory installation, acoustic and moisture control, and joint finishing.

Key technical indicators
Shielding effectiveness: ≥80 dB at 100 MHz. Entire room built with non‑magnetic structure and fittings. Works comply with hospital infection control rules and MRI equipment acceptance requirements.

Construction preparation

• Verify on‑site room dimensions, structural load capacity, elevations and MEP (mechanical, electrical, plumbing) points; confirm equipment foundation and shielding drawings meet construction needs.
• All incoming materials must be certified medical non‑magnetic products; ferromagnetic materials are strictly prohibited. Perform advance material inspection and approval.
• Separate construction zones for shielding works, decoration and accessory installation; plan sequencing to protect finished areas, control dust and noise, and ensure site safety.
• Provide technical briefing to personnel covering RF shielding welding standards, joint sealing and non‑magnetic installation procedures.

Key construction procedures
3.1 Base and floor works

• Level and compact base; install double‑layer moisture‑proof and waterproof membranes with upturns on walls to protect equipment from moisture.
• Prepare and reinforce equipment base to satisfy load‑bearing and vibration/shock absorption requirements of the MRI system.
• Install medical non‑magnetic anti‑static seamless flooring resistant to disinfectants and easy to clean to meet medical cleanliness standards.

3.2 RF shielding works (core procedure)

• Construct a closed hexahedral RF shielding enclosure using high‑quality shielding panels welded continuously; ensure flat panels and continuous full welds without cold joints or gaps.
• Create an integral closed shielding body for walls, ceiling and floor with tightly overlapped seams to ensure structural and electromagnetic integrity.
• Install RF shielding doors and observation windows with knife‑edge joints and qualified overlapping shielding dimensions.
• Seal all penetrations with waveguide windows and RF filters to prevent electromagnetic leakage and preserve shielding performance.

3.3 Wall and ceiling finishes

• Fit medical antibacterial non‑magnetic color steel panels or 304 non‑magnetic stainless steel panels on walls with tight joints; surfaces must resist medical disinfectants and meet infection control standards.
• Install lightweight non‑magnetic ceiling panels filled with flame‑retardant acoustic material to reduce operational noise and maintain a quiet environment.
• All trims, fixing screws and hardware must be dedicated non‑magnetic parts to avoid imaging artifacts and safety risks from ferromagnetic metals.

3.4 Auxiliary installations

• Use medical non‑magnetic lighting, outlets, switches and junction boxes with standardized layout and wiring.
• Adapt ventilation and air‑conditioning outlets to the shielding structure to ensure airflow without compromising shielding integrity.
• Complete acoustic treatment, dust control and final finishes to deliver a clean space aligned with medical construction standards.

Quality control measures

• Non‑magnetic material control: ferromagnetic items are forbidden on site; all panels, fittings and hardware must be certified non‑magnetic.
• Shielding integrity: control weak points such as weld seams, door/window joints and penetrations to eliminate electromagnetic leakage and meet specified performance.
• Construction quality: ensure flat panels, uniform seams and tight joints; verify moisture‑proofing, acoustic and shock‑absorption performance for long‑term equipment operation.
• Compliance: execute works in accordance with radiology room construction codes, hospital infection control regulations and MRI manufacturer site requirements.

Acceptance criteria

• Shielding test: ≥80 dB at 100 MHz with no measurable electromagnetic leakage.
• Non‑magnetic verification: no exposed ferromagnetic components or fittings in the room.
• Finishes: walls, floors and ceilings must be smooth, clean and meet waterproofing, acoustic and dust‑proof standards for sustained medical use.
• Seals and joints: all shielding joints, doors, windows and penetrations must pass inspection; prepare complete technical documentation for equipment installation and hospital acceptance.

Technical specifications

• Shielding effectiveness: ≥80 dB at 100 MHz
• Structure: fully non‑magnetic design (no ferromagnetic fittings)
• Shielding enclosure: closed hexahedral RF shielding with full welding and overlapped seams
• Door/window joints: knife‑edge joints with qualified overlapping shielding
• Penetration sealing: waveguide windows and RF filters to prevent leakage
• Floor: double‑layer moisture‑proof/waterproof base and medical non‑magnetic anti‑static flooring resistant to disinfectants
• Equipment base: leveled and reinforced to meet load‑bearing and shock‑absorption requirements
• Wall/ceiling finish: medical antibacterial non‑magnetic panels or 304 non‑magnetic stainless steel; flame‑retardant acoustic ceiling materials
• Auxiliary installations: medical non‑magnetic lighting, outlets, switches and junction boxes