Optimization of matrix gradient coil switching for a limited number of amplifiers

Matrix coils have recently been introduced for shimming as well as encoding. To reduce costs, a switching circuit can be used to drive clusters of coil elements simultaneously with a reduced number of amplifiers. This work focuses on algorithmic approaches for finding suitable coil element clusters that are able to create an approximation to a desired target field. We introduce three algorithms and show that fewer amplifiers than coil elements do not necessarily reduce the flexibility of a matrix gradient coil, as long as the switching circuit suitably assigns the coil elements to the available amplifiers.

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.