In-room imaging and MR planning

Common to set limit at 20 cm radius

More useful to consider  B &  G: linear

with rise time

 B (mT)

 G (mT/m)

N Axis

db/dt (T/s)

SR (T/m/s)

τ (µs)

Reilly (1989)

-

54

7.5

138

Bourland (1999)

84 y z

14.9 26.2

5.4 9.9

365 378

Ham (1997)

4 xyz

41.5

34

810

Hebrank (2000)

65 y xy xyz

16.3 18.6 20.1

8.6 8.7 10.2

526 467 507

Zhang (2003)

20 xy

25.1

13.2

77.0

40.5

526

Literature PNS thresholds (Adapted from Zhang et al MRM 50:50-58; 2003 )