Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 2 de 2
Filter
Add more filters










Database
Language
Publication year range
1.
Acta Neurochir Suppl ; 87: 141-5, 2003.
Article in English | MEDLINE | ID: mdl-14518542

ABSTRACT

INTRODUCTION: While it is desirable to perform MRI examinations in patients with deep brain stimulators (DBS), a major safety concern exists regarding the potential for excessive heating secondary to magnetically induced electrical currents. This study was designed to determine the safety of MRI and DBS. METHODS: Standard configurations of DBS systems were tested. In vitro testing was performed using a 1.5-Tesla MR system, a gel-filled phantom, and the body and head RF coils with varying levels of RF energy (SAR). A fluoroptic thermometry system was used to record temperatures. RESULTS: Using the 1.5-T MRI and body RF transmit coil, the temperature changes ranged from 2.5 to 25.3 degrees C. Using the 1.5-T MRI and head RF transmit coil, the temperature changes ranged from 2.3 to 7.1 degrees C. CONCLUSIONS: Excessive heating does occur with certain MR imaging conditions. Under certain conditions determined in this study, patients with DBS may safely undergo anatomical MR imaging. In the future, standardized testing and more comprehensive studies will be needed to ensure the MR safety of neurostimulation systems.


Subject(s)
Brain Injuries/etiology , Burns/etiology , Electric Stimulation Therapy/adverse effects , Electrodes, Implanted/adverse effects , Electromagnetic Fields , Equipment Safety/methods , Magnetic Resonance Imaging/adverse effects , Body Temperature/radiation effects , Brain Injuries/prevention & control , Burns/prevention & control , Equipment Failure Analysis , Hot Temperature/adverse effects , Humans , Phantoms, Imaging , Radiometry/methods , Thermography
SELECTION OF CITATIONS
SEARCH DETAIL
...