Mrso questions n answers graded A+ 2024/2025

Static magnetic field Biological forces of Bo - correct answer Magnetophosphenes Magneto hydrodynamic effect Flow potentials/EKG perturbations -Vertigo/dizziness/nystagmus/ nausea with motion in the bo : field strength related/ especially in 7T Pregnancy related issues: spontaneous abortion, premature delivery, gender of offspring, low birth weight, infertility Mechanical forces - correct answer Translational forces (missile effect) 1. Magnetic spacial gradient exposure c field exposure 3. Spatial and force related effect of magnetic shielding a. Active b. Passive 4. 3D location of maximal translational force (i.e., location of maximum (dB/dx)(Bo)) Rotational forces ( torque) 3D location of maximal rotational force (ie location of maximum Bo) Lenz's forces 1. Dependence predominantly on : a. Bo static field gradient b. Orientation of electrical conductor relative to the lines of magnetic force c. Taste of motion of electrical conductor relative to Bo d. Dimensions of moving electrical conductor