• Object ID: 00000018WIA30FB1C80GYZ
  • Topic ID: id_2036111 Version: 1.11
  • Date: Jul 23, 2022 8:17:48 AM

1.5T MR systems

IPM magnet

Minimum spatial gradient at entry = 263 G/cm

Distance A is the front, sides, and back of the magnet = 25 cm.

Distance D is within the bore as defined in Table 1

Figure 1. Distance D for IPM systems:

x = Spatial gradient, G/cm

y = Distance, cm

Table 1. Image legend: Spatial gradient data for 1.5T IPM MR system
Spatial Gradient (G/cm)Distance D (cm)
26335*
30018.7
35011.8
4007.9
4475
5700

LCCW magnet

Minimum spatial gradient at entry = 270 G/cm

Distance A is the front, sides, and back of the magnet = 30 cm.

Distance D is within the bore as defined in Table 2.

Figure 2. Distance D for LCCW systems:

x = Spatial gradient, G/cm

y = Distance, cm

Table 2. Image legend: Spatial gradient data for 1.5T LCCW MR system
Spatial Gradient (G/cm)Distance D (cm)
27035*
28025
30020
33015
37010
4107.5
4605
6400
*Since this is the radius of the bore, there is no path into the bore that does not pass through at least this spatial gradient.
1 *Since this is the radius of the bore, there is no path into the bore that does not pass through at least this spatial gradient.