1 / 16

Phase-Cycled SSFP Accelerated via DISCO

Phase-Cycled SSFP Accelerated via DISCO. May 31, 2012 Jason Su. Acquisition. 7T 4-phase cycled FIESTA ASSET 2.5x 330x94x250 ( pfile matrix) acquired 512x512x250 reconstructed. Processing. Matlab retrospective application of DISCO on ASSET-reconstructed DICOM images

ovid
Download Presentation

Phase-Cycled SSFP Accelerated via DISCO

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phase-Cycled SSFP Accelerated via DISCO May 31, 2012 Jason Su

  2. Acquisition • 7T • 4-phase cycled FIESTA • ASSET 2.5x • 330x94x250 (pfile matrix) acquired • 512x512x250 reconstructed

  3. Processing • Matlab retrospective application of DISCO on ASSET-reconstructed DICOM images • Unfortunately couldn’t work from pfile due to offline.recon version incompatability • 4x undersampled B region (across the 4 phase cycles) • Net accel. of 2.7x

  4. Sum of Squares – Fully Sampled

  5. Sum of Squares – 2.7x Accelerated

  6. Sum of Squares – Percent Difference

  7. Sum of Squares – Percent Difference

  8. Phase 1 – Fully Sampled

  9. Phase 1– 2.7x Accelerated

  10. Phase 2 – Fully Sampled

  11. Phase 2 – 2.7x Accelerated

  12. Phase 3 – Fully Sampled

  13. Phase 3 – 2.7x Accelerated

  14. Phase 4 – Fully Sampled

  15. Phase 4 – 2.7x Accelerated

  16. Conclusions • There is a “loss” of some of the bands in the individual phase images • But the net result in the SOS combination looks more or less like a loss of SNR • Usually DISCO is done on a per coil channel basis, this may have an effect on the result • Here it was done just on the reconstructed magnitude image

More Related