Abstract #3722

Reduction of the RF-Induced Heating for the Partially-In and Partially-Out Medical Electrodes at 1.5T MRI

Md Zahidul Islam¹, Ran Guo¹, Mir Khadiza Akter¹, Jianfeng Zheng¹, Hongbae Jeong², Ananda Kumar², and Ji Chen¹

¹Dept. of Electrical and Computer Engineering, University of Houston, Houston, TX, United States, ²CDRH, U.S. Food and Drug Administration, Silver Spring, MD, United States

Synopsis

Keywords: Safety, Safety

Motivation: RF-induced heating for the partially-in and partially-out (PIPO) medical implants is the primary concern for patient’s safety under MRI.

Goal(s): Winding the external portion of the PIPO medical electrodes is proposed to reduce the RF heating under 1.5T MRI.

Approach: One commercial PIPO medical electrode and an insulated solid wire were used to demonstrate this concept. RF heating is measured inside the ASTM phantom under a 1.5T RF birdcage coil and evaluated from the in-vivo simulations using the transfer function (TF) approach.

Results: The results showed a significant reduction of RF heating in the commercial lead and simplified wire.

Impact: The proposed method can reduce RF-induced heating significantly, mitigating the risk of tissue damage and improving the quality of care for patients with partially-in and partially-out (PIPO) medical devices under 1.5T MRI.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.