Contents
iv Site Planning Information BioSpec 70/30 USR_2_V020
5.3.1.3 Effect of MR system to other equipment...........................................................................30
5.3.1.4 Remote magnetic effects ..................................................................................................30
5.3.2 Electromagnetic interactions.............................................................................................30
5.3.2.1 DC and LF interference.....................................................................................................31
5.3.2.2 RF interference .................................................................................................................32
5.3.3 Mechanical interactions ....................................................................................................34
5.3.3.1 Ground and building vibrations .........................................................................................34
5.3.3.2 Impact noise......................................................................................................................36
5.3.3.3 Acoustic ............................................................................................................................36
6 Planning Details................................................................................................................................37
6.1 Measurements and room dimensions...............................................................................37
6.1.1 Overview ...........................................................................................................................37
6.1.2 Operating area ..................................................................................................................38
6.1.3 Magnet Area .....................................................................................................................38
6.1.4 Technical area ..................................................................................................................41
6.2 RF Shielded Room............................................................................................................42
6.2.1 Filter plates .......................................................................................................................43
6.2.1.1 Electronic filter plate..........................................................................................................47
6.2.1.2 Magnet filter plate .............................................................................................................47
6.2.1.3 Filter plate for anesthetic gas exhaust ..............................................................................47
6.2.1.4 Filter plate for magnet exhaust system .............................................................................48
6.2.1.5 MRI CryoProbe™ filter plate .............................................................................................48
6.2.1.6 In-vivo filter plate...............................................................................................................48
6.2.1.7 Filter plate for Faraday cage ventilation............................................................................48
6.3 Exhaust system.................................................................................................................49
6.3.1 Design criteria of the exhaust system ...............................................................................50
6.3.2 Calculating the exhaust system ........................................................................................52
6.4 Floor construction .............................................................................................................54
6.4.1 Footprint and weights........................................................................................................54
6.4.2 Magnet foundation ............................................................................................................55
6.4.3 Electrostatic discharge......................................................................................................57
6.4.4 Seismic safety standards ..................................................................................................57
6.5 Electrical installations........................................................................................................59
6.5.1 Overview ...........................................................................................................................59
6.5.2 Mains Supply ....................................................................................................................59
6.5.3 Equipotential Bonding .......................................................................................................62
6.5.4 Electrical connections in the magnet room .......................................................................62
6.5.5 Electrical connections in the operating room ....................................................................62
6.5.6 Line Power Distributor.......................................................................................................63
6.6 Supervision signals ...........................................................................................................64
6.7 Cable lengths and routing .................................................................................................64
6.7.1 Line lengths for the MRI CryoProbe..................................................................................68
6.8 Lighting system .................................................................................................................69
6.9 Ventilation and air conditioning .........................................................................................69
6.9.1 Overview ...........................................................................................................................69
6.9.2 Air conditioning systems ...................................................................................................70
6.9.3 Anesthetic gas extraction..................................................................................................71
