The ornamental design for a part of a magneticresonance imaging system, as shown and described.
1. Part of a magnetic resonance imaging system
1.1 is a perspective view showing the part of a magnetic resonance imaging system of our design;
1.2 is a front elevational view thereof;
1.3 is a rear elevational view thereof;
1.4 is a left side elevational view thereof;
1.5 is a right side elevational view thereof;
1.6 is a top plan view thereof; and
1.7 is a bottom plan view thereof.
The portions of the part of a magnetic resonance imaging system shown in broken lines are included for the purpose of illustrating unclaimed portions of the part of a magnetic resonance imaging system and form no part of the claimed design.