Key words:
7T MRI Cyclotron Room
1. Environmental Requirements
- Magnetic Field Environment: Strict non-magnetic construction shall be implemented. All hardware and section materials adopt non-magnetic aluminum alloy and demagnetized 304 stainless steel to avoid magnetic field distortion caused by ferromagnetic materials.
- Radiation Protection: Heavy-ion radiation shielding layers shall be constructed on walls, floors and ceilings to block high-energy rays generated by the cyclotron.
- RF Shielding: A fully enclosed hexahedral copper RF shielding enclosure shall be built with shielding effectiveness ≥100 dB, which can resist external electromagnetic interference and guarantee the imaging quality of the 7T ultra-high field equipment.
2. Civil Engineering & Decoration
- Floor: Double-layer moisture-proof structure plus shock-absorbing base to bear the heavy load of ultra-high field magnet and accelerator equipment.
- Wall and Ceiling: Medical clean non-magnetic color steel plates with sealed dustproof structure, which meet the hospital infection control standards for nuclear medicine departments.
- Auxiliary Facilities: Special shielding doors, shielding observation windows, waveguide ventilation windows and power filters shall be equipped. All pipelines shall be treated with shielding and sealing.
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