RF-Shielding of Laser-Cut Venous Stents: Calculations, Simulations, and Experiments.

ABSTRACT:

Purpose

To develop an analytical model of the RF-shielding of laser-cut venous stents for different orientations and stent geometries.

Methods

Laser-cut venous stents are modeled as a grid composed of circular and rectangular loops. As these loops are orthogonal they shield different components of the transmit RF field. The shielding is calculated using Faraday's induction law, taking into account the self-inductance and mutual coupling of circular and rectangular loops, and Biot-Savart's law. The shielding of 95 stent-mimicking models was calculated, and numerical simulations and measurements were performed at both 1.5 and 3T for validation.

Results

The shielding of circular and rectangular loops differed by less than 3.3% and 10% between calculations, simulations, a

SUBMITTER: Regler L 

PROVIDER: S-EPMC12850596 | biostudies-literature | 2026 Apr

REPOSITORIES: biostudies-literature