Complexity of MRI induced heating on metallic leads: Experimental measurements of 374 configurations

Eugenio Mattei¹ , Michele Triventi¹ , Giovanni Calcagnini¹ , Federica Censi¹ , Wolfgang Kainz² , Gonzalo Mendoza² , Howard I Bassen² and Pietro Bartolini¹

¹Dept. of Technologies and Health, Italian National Institute of Health, Roma, Italy

²Center for Devices and Radiological Health, Food and Drug Administration, Rockville, MD, USA

author email corresponding author email

BioMedical Engineering OnLine 2008, 7:11doi:10.1186/1475-925X-7-11


Published:	3 March 2008

Additional files

Additional file 1:

Temperature and SAR measures on metallic wires. The Excel file (2007 version) contains the temperature raw data collected during the RF exposure of metallic wires. For each configuration, which corresponds to a single column of the file, a schematic representation of the experimental set-up is reported. For each configuration, we also calculated the difference between the baseline and the highest temperature reached during the RF exposure (dT – °C), as well as the SAR (W/kg), from the slope of the initial temperature increase (see Methods section for details). The file is divided into 5 sheets, which refers to different shapes of the metallic wire: - straight wires; - left imp. wires (insulated wires shape to simulated the PM lead path from the left pectoral region to the heart ventricle); - right imp. wires (insulated wires shape to simulated the PM lead path from the right pectoral region to the heart ventricle); - bare wires; - left and right imp. wires (left imp. wires and right imp. wires simultaneously exposed to the RF signal). The first column of each sheet contains the time reference for the temperature values.

Format: ZIP Size: 4.1MB Download file

Additional file 2:

Temperature and SAR measures on PM leads. The Excel file (2007 version) contains the temperature raw data collected during the RF exposure of PM leads. For each configuration, which corresponds to a single column of the file, a schematic representation of the experimental set-up is reported. For each configuration, we also calculated the difference between the baseline and the highest temperature reached during the RF exposure (dT - °C), as well as the SAR (W/kg), from the slope of the initial temperature increase (see Methods section for details). The file is divided into 5 sheets, which refers to different locations or structures of the lead: - left imp.-0,1,2 loops (PM can positioned in the upper left region of the phantom, with the lead that makes 0, 1 or 2 loops around it); - right imp.-0,1,2 loops (PM can positioned in the upper right region of the phantom, with the lead that makes 0, 1 or 2 loops around it); - Bipolar leads; - rect. VS human-shaped phantom (comparison between same configuration in the rectangular and in the human-shaped phantom). The first column of each sheet contains the time reference for the temperature values.

Format: ZIP Size: 7.7MB Download file