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

CMRR-C2P / MB

Support for CMRR multi-band pulse sequences

http://www.cmrr.umn.edu/multiband/

MIT License

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unable to scan with "multi-band accel. factor" on #339

Open tuji313 opened 1 year ago

tuji313 commented 1 year ago

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. 2281699367618_ pic

1761699281357_ pic

eauerbach commented 1 year ago

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.