Safety of MRI in patients with retained cardiac leads.

ABSTRACT:

Purpose

To evaluate the safety of MRI in patients with fragmented retained leads (FRLs) through numerical simulation and phantom experiments.

Methods

Electromagnetic and thermal simulations were performed to determine the worst-case RF heating of 10 patient-derived FRL models during MRI at 1.5 T and 3 T and at imaging landmarks corresponding to head, chest, and abdomen. RF heating measurements were performed in phantoms implanted with reconstructed FRL models that produced highest heating in numerical simulations. The potential for unintended tissue stimulation was assessed through a conservative estimation of the electric field induced in the tissue due to gradient-induced voltages developed along the length of FRLs.

Results

In simulations under conservative approach

SUBMITTER: Nguyen BT 

PROVIDER: S-EPMC8919805 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature