Peak static spatial gradients on patient accessible areas table

To determine your system configuration (magnet and gradient type) view the About MR scanner. To access About MR Scanner, seeAbout MR Scanner .

Enclosure

Table 1. SIGNA^TM Voyager enclosure peak static spatial gradients on patient accessible areas for LCCW magnet
Patient bore type	Parameter	Radial Location R(m)	Location along Z(m)	B(T)	Grad(B) (T/m)	max(B)* grad(B) (T²/m)
70 VRMW	Peak B	0.35	0.62	2.0	4.8	9.7
	Peak Gradient	0.35	0.74	1.7	6.4	10.5
	Peak Product	0.35	0.68	2.0	5.6	11.0

Table 2. SIGNA^TM Voyager enclosure peak static spatial gradients on patient accessible areas for IPM magnet
Patient bore type	Parameter	Radial Location R(m)	Location along Z(m)	B(T)	Grad(B) (T/m)	max(B)* grad(B) (T²/m)
70 VRMW	Peak B	0.35	0.62	2.0	3.7	7.2
	Peak Gradient	0.35	0.78	1.5	5.7	8.8
	Peak Product	0.35	0.74	1.7	5.3	9.2

Static magnetic field plots for siting (rule of thumb - assumes no ferromagnetic materials) may be found at:

http://www.gehealthcare.com/company/docs/siteplanning.html#mr

Coordinate system for field and gradient where Z is in the B0 direction, R is the radius, and the origin is isocenter.

The following figures represent the contour map for the static magnetic field (B0) from the MR system at positions accessible to the MR worker.