MRSO Safety Exam Guide |UPDATED!!| 100% Correct Answers

MRSO Safety Exam Guide |UPDATED!!| 100% Correct Answers Slew rate *Ans* Speed at which gradient coil turns on and off Time-varying Gradient *Ans* Induced current in a patient Magnetic Flux Lines *Ans* Travel from North to South pole permanent magnet *Ans* Can not be turned off Very inexpensive; extremely heavy Approximately 0.4T Vertical vector Resistive magnet *Ans* Can be turned on and off Costly due to cooling Approximately 0.6T Vertical or horizontal vector Superconductive magnet *Ans* Approximately 10T Low electricity; reasonable cost Active shielding *Ans* The use of coil of wire, with an electrical current running through it, to produce an electromagnetic field opposing the static magnetic field, to reduce the fringe field B-sub zero *Ans* The unit used to describe the static magnetic field Deflection *Ans* The amount of attraction an object has to the static magnetic field Diamagnetism *Ans* A weakly repulsive force when placed in a strong static magnetic field Faraday's Law of Induction *Ans* This describes how electrical currents are produced in the presence of alternating magnetic field Ferromagnetism *Ans* An object with strong attractive force, in a strong static magnetic field, that retains a magnetic field even when leaving the strong static magnetic field Fringe field *Ans* The magnetic field that extends outside the MR unit Gauss *Ans* A magnetic field unit of measurement