Keywords: MR-Guided Focused Ultrasound, Focused Ultrasound, Ultrasound, Electromagnet, Gradient, Brain
Motivation: Lack of a feedback mechanism renders focused ultrasound neuromodulation results inconsistent and difficult to reproduce.
Goal(s): This study hypothesis that electromagnets coupled with MRI can quantify low pressure acoustic fields in a gel sample.
Approach: We constructed a custom resonant electromagnet coil to encode propagating acoustic waves into the complex phase of MR images.
Results: Acoustic propagation appeared in the phase patterns of MR images, they differed from hydrophone measurements. The speed of sound was correct, but the measured pressure amplitude was different.
Impact: This is the first acquisition of acoustic waves using MRI with a human compatible coil.
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.
Keywords