Siemens MAGNETOM Skyra, Owner'S Manual, Page: 75 / 124

3
Siemens AG Healthcare Sector 11/12 Technical data
In compliance with the German “Qualifikationsvereinbarung”.
Standard deviation Vrms (Volume root-mean square) measured with highly accurate 24 plane plot method
(20 points per plane).
Standard active shim with 3 linear and 5 non-linear channels (2nd order).
DSV = Diameter spherical volume (x, y and z direction).
DEV = Diameter elliptical volume.
Homogeneity (based on highly accurate 24 plane plot)
Guaranteed Typical
10 cm DSV 0.01 ppm 0.003 ppm
20 cm DSV 0.05 ppm 0.03 ppm
30 cm DSV 0.3 ppm 0.2 ppm
40 cm DSV 1.4 ppm 1.2 ppm
50×50×45 cm
3
DEV 4.0 ppm 3.6 ppm
Shimming
Both: passive and active shimming. Passive shimming during installation.
Standard active shim with 3 linear channels (1
st
order) and 5 non linear channels
(2
nd
order).
3D Shim Patient-specific automated shim
Time to shim = approx. 30 s