Standard Test Method for Measurement of Magnetically Induced Displacement Force on Passive Implants in the Magnetic Resonance Environment

1.1 This standard test method covers the measurement of the magnetically induced displacement force produced by the spatial gradients of a magnetic field on passive implants (implants that function without the supply of electrical power) and the comparison of that force to the weight of the implant.

1.2 This method does not address the issues of magnetically induced torque or RF heating.

1.3 This method is intended for devices that can be suspended from a thin string. Devices which cannot be suspended from a thin string are not covered by this test method.

1.4 The weight of the thin string from which the device is suspended during the test must be less than 1% of the weight of the tested device.

1.5 This method is applicable only to magnet systems in which the direction of the magnetic field (and the direction of the magnetically induced deflection force) is horizontal.