What is the basis for the safety standards set by Lawrence Livermore, WHO, ACGIH, NRPB, and ICNIRP?
The standards are based on several considerations. • One objective is to keep the electrical currents induced by movement through the static magnetic field to a level less than those that occur naturally in the body. • A second objective is to keep the electrical currents induced in large blood vessels by blood flow to a level that will not produce hemodynamic or cardiovascular effects. • The pacemaker and prosthetic device restrictions are considered in Q22.