Abstract #2727

Interactions and heating time-course of cerebral aneurysm flow diverters during scanning at 7 Tesla

Suguru Igarashi¹, Kohei Chida¹, Tsuyoshi Matsuda², Kota Takeda², Susumu Hayakawa², Shota Tsutsui¹, Shunrou Fujiwara¹, Yoshitaka Kubo¹, Makoto Sasaki², and Kuniaki Ogasawara¹

¹Department of Neurosurgery, Iwate Medical University, Morioka, Japan, ²Division of Ultrahigh Field MRI, Institute for Biomedical Sciences, Iwate Medical University, Morioka, Japan

Synopsis

Keywords: Interventional Devices, Stroke, flow diverter, 7T MRI

Motivation: Adverse interactions with static magnetic fields (e.g., displacement force and torque) and radiofrequency-induced heating during MRI have been resolved for 3T MR systems, but have yet to be assessed for 7T MRI.

Goal(s): The present study aimed to assess displacement force and torque in the 7T static magnetic field and to clarify radiofrequency-induced heating during 7T MRI for two types of FDs.

Approach: This study was conducted based on the ASTM standards.

Results: Magnetic field interactions and heating on FDs during 7T MRI are acceptable from a safety perspective.

Impact: This study based on ASTM standards showed magnetic field interactions and heating on FDs during 7T MRI are acceptable from a safety perspective.

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