A contribution to MRI safety testing related to gradient-induced heating of medical devices.

ABSTRACT:

Purpose

To theoretically investigate the feasibility of a novel procedure for testing the MRI gradient-induced heating of medical devices and translating the results into clinical practice.

Methods

The concept of index of stress is introduced by decoupling the time waveform characteristics of the gradient field signals from the field spatial distribution within an MRI scanner. This index is also extended to consider the anisotropy of complex bulky metallic implants. Merits and drawbacks of the proposed index of stress are investigated through virtual experiments. In particular, the values of the index of stress evaluated for realistic orthopedic implants placed within an ASTM phantom are compared with accurate heating simulations performed with 2 anatomic body models (a man

SUBMITTER: Arduino A 

PROVIDER: S-EPMC9314691 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature