Objective To define thresholds of safe local temperature increases for MR equipment that
exposes patients to radiofrequency fields of high intensities for long duration. These MR …

There are currently more than 50 ultra-high field (7 T and above) MRI systems installed
around the world. The vast majority of these perform studies on humans, whether healthy …

Individuals working next to strong static magnetic fields occasionally report disorientation
and vertigo. With the increasing strength of magnetic fields used for magnetic resonance …

Objectives Limited data is available about incidence of acute transient symptoms associated
with occupational exposure to static magnetic stray fields from MRI scanners. We aimed to …

Background Ultrahigh‐field (UHF) MRI advances towards clinical use. Patient compliance is
generally high, but few large‐scale studies have investigated the effects experienced in 7T …

This special issue contains papers presented at an international workshop entitled 'Thermal
Aspects of Radio Frequency Exposure'convened in Gaithersburg, Maryland, USA on 11–12 …

Vertigo is a commonly-reported side effect of exposure to the high magnetic fields found in
magnetic resonance imaging machines. Although it has been hypothesized that high …

Background Pulsed radiofrequency (RF) magnetic fields, required to produce magnetic
resonance imaging (MRI) signals from tissue during the MRI procedure have been shown to …

Some human subjects report vestibular disturbances such as vertigo, apparent motion, and
nausea around or within high strength MRI systems operating at 4T to 9.4 T. These …

The objective of this study was to evaluate occurrence and strength of short‐term effects
experienced by study participants in an actively shielded (AS) 7 tesla (7 T) magnetic …