RF-induced heating of interventional devices at 23.66 MHz

AC Özen, MF Russe, T Lottner, S Reiss, S Littin… - … Resonance Materials in …, 2023 - Springer
Objective Low-field MRI systems are expected to cause less RF heating in conventional
interventional devices due to lower Larmor frequency. We systematically evaluate RF …

[HTML][HTML] Radio-frequency induced heating of intra-cranial EEG electrodes: The more the colder?

T Lottner, S Reiss, SB Rieger, M Schuettler, J Fischer… - Neuroimage, 2022 - Elsevier
Many neurological disorders are analyzed and treated with implantable electrodes. Many
patients with such electrodes have to undergo MRI examinations–often unrelated to their …

Wirelessly interfacing sensor‐equipped implants and MR scanners for improved safety and imaging

B Silemek, F Seifert, J Petzold, R Brühl… - Magnetic …, 2023 - Wiley Online Library
Purpose To investigate a novel reduced RF heating method for imaging in the presence of
active implanted medical devices (AIMDs) which employs a sensor‐equipped implant that …

An improved intraoral transverse loop coil design for high‐resolution dental MRI

AC Özen, S Ilbey, F Jia, D Idiyatullin… - Magnetic resonance …, 2023 - Wiley Online Library
Purpose To improve intraoral transverse loop coil design for high‐resolution dental MRI.
Methods The transverse intraoral loop coil (tLoop) was modified (mtLoop) by overlapping …

MR Safety of Inductively Coupled and Conventional Intraoral Coils

AS Tesfai, S Reiss, T Lottner, M Bock… - Investigative …, 2023 - journals.lww.com
Purpose Intraoral coils (IOCs) in magnetic resonance imaging (MRI) significantly improve
the signal-to-noise ratio compared with conventional extraoral coils. To assess the safety of …

Effect of Strain Relief Loop Position on the RF-Induced Heating of Active Implantable Medical Devices at 1.5-T MRI

MK Akter, R Guo, MZ Islam, J Zheng… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
This article studies the impact of strain relief loops on RF-induced heating of active
implantable medical devices (AIMDs) during magnetic resonance imaging (MRI) scans at …

A Cascaded Heterogeneous Equivalent Network for Evaluating RF-Induced Hazards on Active Implantable Medical Devices

J Liu, Y Wang, R Guo, Q Wang, J Zheng… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
This article presents a cascaded heterogeneous equivalent network for the evaluation of
radiofrequency (RF) induced safety hazards on electrically long active implantable medical …

MR safety assessments of active implantable and interventional devices in a single measurement setup

AC Özen, S Reiss, O Lottner, T Yildirim… - Proc Intl Soc Mag …, 2021 - archive.ismrm.org
Interventional devices such as actively visualized catheters or guidewires have a long
conductive line between the source and the probe at the tip. Long conductive wires can …

[PDF][PDF] Sensor based mitigation of implant related RF safety hazards in MRI by??-field steering

B Silemek - 2023 - opendata.uni-halle.de
MRI is a state-of-the-art medical imaging technology utilizing non-ionizing electromagnetic
radiation to generate images of the body with high soft-tissue contrast. However, MRI of …