Table 2.

Requirements for scanning patients with MRI-conditional pacemakers

Patient characteristics
• More than 6 weeks after pacemaker implantation
• Right or left pectoral implant (prepectoral or submuscular)
• No other contraindications to MRI (eg, non-MRI-conditional abandoned leads)
• No lead adapters or extenders in situ
MRI scanner and scanning parameters
• Static magnetic field of 1.5 T
• Cylindrical bore
• Maximum SAR of 2 W/kg
• Maximum head SAR of 3.2 W/kg
• Maximum gradient slew rate of 200 T/m per second
Pacemaker model
	Medtronic® Revo™, Ensura™ and Advisa™ Sure Scan® pacemakers with CapSure™ leads	Biotronik® Evia™, Entovis™, Estella™ and Ecuro™ ProMRI® pacemakers with Safio™ and Solia™ leads	St Jude® Accent™ MRI pacemaker with Tendril™ leads	Boston Scientific® Ingenio™ and Advantio™ Image Ready® pacemakers with FINELINE™ leads	Sorin® KORA 100™ SR and DR pacemakers MRI with BEFLEX™ leads
MRI-conditional modes	All
Stable pacing capture threshold values			✓
Capture threshold and pulse width	≤2.0 V @ 0.4 msec	≤2.0 V @ 0.4 msec	≤2.5 V @ 0.5 msec	≤3.0 V @ 0.4 msec	≤3.0 V @ 0.5 msec
Lead impedance 200–1,500 Ohms	All
Battery charging status at least 30%		✓
No diaphragmatic pacing at 5.0 V at a pulse width of 1.0 msec	✓		✓
Scan zone restrictions	None	Exclusion zone between C1 and T12 vertebrae	None	None	Exclusion zone between C1 and T12 vertebrae
Scan duration restrictions	None	≤30 minutes for each scan; total maximum of 10 hours	None	None	None

Abbreviations: SAR, specific absorption rate; MRI, magnetic resonance imaging.