Thermo-Acoustic Ultrasound for Detection of RF-Induced Device Lead Heating in MRI.

ABSTRACT: Patients who have implanted medical devices with long conductive leads are often restricted from receiving MRI scans due to the danger of RF-induced heating near the lead tips. Phantom studies have shown that this heating varies significantly on a case-by-case basis, indicating that many patients with implanted devices can receive clinically useful MRI scans without harm. However, the difficulty of predicting RF-induced lead tip heating prior to scanning prevents numerous implant recipients from being scanned. Here, we demonstrate that thermo-acoustic ultrasound (TAUS) has the potential to be utilized for a pre-scan procedure assessing the risk of RF-induced lead tip heating in MRI. A system was developed to detect TAUS signals by four different TAUS acquisition methods. We then integrated

SUBMITTER: Dixit N 

PROVIDER: S-EPMC5942199 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature