In-room imaging and MR planning

Exposure Limits: RF

SAR

Whole body head Partial body* Local Body**

Local Extremity**

Normal

2 W/kg

3.2

2-10

10

20

Controlled

4

3.2

4-10

20

40

Research

> 4

> 3.2

> 10

> 20

> 40

Above are IEC 2010 limits with following notes: Over a time average 6 min; 10 s duration cannot exceed × 2 *scales as 10-8 × r where r is ratio of exposed mass to whole body mass **local SAR based on 10g tissue mass Assumes normal ambient temperature and humidity

Body Temperature

Max increase (  C)

Normal

0.5

Controlled

1.0

Research

> 1.0