unable to scan with "multi-band accel. factor" on

[tuji313]

Hi CMRR team

We have experienced a problem where we were unable to scan with "multi-band accel. factor" on. The flip corner is clipped with it on, and the scan reports a rebuild error. Without it on, it can be scanned. What could be done to solve this issue, please?

Thank you very much for your help, cheers.

[eauerbach]

That message is indicating that the 4-band refocusing RF pulse can not reach the requested 160º flip angle. You will need to increase the length of the refocusing pulse or make sure the "phase scramble" checkbox is checked which lowers the peak power requirement. Or click OK and it will run with a 155.3º flip angle.