Fast Susceptibility Weighted Imaging (SWI) with Wave-CAIPI:
We are pleased to announce the release of our Wave-CAIPI software package for fast SWI and QSM applications.
Wave-CAIPI is a parallel imaging technique that allows high acceleration rates while retaining the image quality [1,2]. This is especially impactful in SWI and QSM where high resolution imaging with whole-brain coverage and optimal phase contrast lead to lengthy acquisitions.
Our sequence aims to address this by fully utilizing acceleration capability provided by high channel count head arrays. This flexible sequence can sample multiple flow compensated echos, which are combined for improved SNR prior to SWI processing.
Wave-CAIPI makes use of ESPIRiT and BART for coil sensitivity estimation [3,4] and is influenced by 2D-CAIPI and Bunch Phase Encoding ideas [5-7].
Pulse sequence and image reconstruction software is available for the VE11C Siemens platform.
We are currently working on compilations for VE11A and B, as well as the VD13 baseline.
To request the software, instructions and example protocols, please navigate to martinos.org/c2p
References:
- B. Bilgic, B. Gagoski, S.F. Cauley, A.P. Fan, J.R. Polimeni, P.E. Grant, L.L. Wald, K. Setsompop; Wave-CAIPI for Highly Accelerated 3D Imaging; Magnetic Resonance in Medicine, DOI: 10.1002/mrm.25347 [PDF] [Matlab code]
- S.F. Cauley, K. Setsompop, B. Bilgic, H. Bhat, B.A. Gagoski, L.L. Wald; Auto-calibrated Wave-CAIPI Reconstruction; Joint Optimization of K-space Trajectory and Parallel Imaging Reconstruction; Magnetic Resonance in Medicine, DOI: 10.1002/mrm.26499
- M. Uecker, P. Lai, M.J. Murphy, P. Virtue, M. Elad, J.M. Pauly, S.S. Vasanawala, M. Lustig; ESPIRiT—an eigenvalue approach to autocalibrating parallel MRI: Where SENSE meets GRAPPA; Magnetic Resonance in Medicine, DOI: 10.1002/mrm.24751
- M. Uecker, F. Ong, J.I. Tamir, D. Bahri, P. Virtue, J.Y. Cheng, T. Zhang, M. Lustig; Berkeley advanced reconstruction toolbox; In Proceedings of the 23rd Annual Meeting ISMRM, Toronto (p. 2486).
- F.A. Breuer, M. Blaimer, M.F. Mueller, N. Seiberlich, R.M. Heidemann, M.A. Griswold, P.M. Jakob; Controlled aliasing in volumetric parallel imaging (2D CAIPIRINHA); Magnetic Resonance in Medicine, DOI: 10.1002/mrm.20787
- H. Moriguchi, J.L. Duerk; Bunched phase encoding (BPE): a new fast data acquisition method in MRI; Magnetic Resonance in Medicine, DOI: 10.1002/mrm.20819
- F.A. Breuer, H. Moriguchi, N. Seiberlich, M. Blaimer, P.M. Jakob, J.L. Duerk, M.A. Griswold; Zigzag sampling for improved parallel imaging; Magnetic Resonance in Medicine, DOI: 10.1002/mrm.21643
