ASTM F2182 PDF

The heating measurements are made twice, once with the implant and then repeated at the same location without the implant. These two measurements estimate the local SAR and the local additional temperature rise with the implant. The results may be used as an input to a computational model for estimating temperature rise due to the presence of that implant in a patient. The combination of the test results and the computational model results may then be used to help assess the safety of a patient with the implant during an MR scan. Other safety issues that should be addressed include magnetically induced displacement force and torque, as well as proper device function while in various configurations in the MR environment. While the focus in this test method is on 1.

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The heating measurements are made twice, once with the implant and then repeated at the same location without the implant. These two measurements estimate the local SAR and the local additional temperature rise with the implant. The results may be used as an input to a computational model for estimating temperature rise due to the presence of that implant in a patient. The combination of the test results and the computational model results may then be used to help assess the safety of a patient with the implant during an MR scan.

Other safety issues that should be addressed include magnetically induced displacement force and torque, as well as proper device function while in various configurations in the MR environment. While the focus in this test method is on 1. For other implantation conditions for example, external fixation devices, percutaneous needles, catheters or tethered devices such as ablation probes , modifications of this test method are necessary.

The RF coil is assumed to have quadrature excitation. No other units of measurement are included in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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RF-induced heating (ASTM F2182)

More F The method allows characterization of the heating propensity of an implant rather than the prediction of heating during a specific MR procedure in a patient. The combination of the test results and the computational model results may then be used to help assess the safety of a patient with the implant during an MR examination. Scope 1. The test method does not specify levels of heating considered to be safe to the patient and relies on users to define their own acceptance criteria. While the focus in this test method is on 1. Testing for devices with other implantation conditions e.

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ASTM F2182

Zulkibei For other implantation conditions for example, external fixation devices, percutaneous needles, catheters or tethered devices such as ablation probesmodifications of this test method atsm necessary. While the focus in this test method is on 1. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The RF coil is assumed to have quadrature excitation. Active view current version of standard. Because of possible additional heating, particularly when implant dimensions approaches or exceeds one quarter of the wavelength of the RF field inside the phantom, conclusions from measurements made at one static magnetic field strength do not apply to other field strengths and frequencies. These two measurements estimate the local SAR and the local additional temperature rise with the implant.

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ASTM F2182 PDF

More F Scope 1. The test method does not specify levels of heating considered to be safe to the patient and relies on users to define their own acceptance criteria. While the focus in this test method is on 1. Testing for devices with other implantation conditions for example, external fixation devices, percutaneous needles, catheters or tethered devices such as ablation probes is beyond the scope of this standard; for such devices, modifications of this test method may be necessary. The exposure system needs to be properly characterized, within the stated uncertainties, in term of local background RF exposure for the implants which are tested.

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ASTM F2182-19e2

A number in parentheses indicates the year of last reapproval. Other safety issuesthat should be addressed include magnetically induced dis-placement force and torque, as well as proper device functionwhile in various configurations in the MR environment. While the focus in this test methodis on 1. For other implantationconditions for example, external fixation devices, percutane-ous needles, catheters or tethered devices such as ablationprobes , modifications of this test method are necessary. The RF coil is assumed tohave quadrature excitation. No other units of measurement are included in thisstandard.

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