PMID- 35646241
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230427
IS  - 1945-7928 (Print)
IS  - 1945-8452 (Electronic)
IS  - 1945-7928 (Linking)
VI  - 2022
DP  - 2022 Mar
TI  - MAXIMIZING UNAMBIGUOUS VELOCITY RANGE IN PHASE-CONTRAST MRI WITH MULTIPOINT 
      ENCODING.
LID - 10.1109/isbi52829.2022.9761589 [doi]
AB  - In phase-contrast magnetic resonance imaging (PC-MRI), the velocity of spins at a 
      voxel is encoded in the image phase. The strength of the velocity encoding 
      gradient offers a trade-off between the velocity-to-noise ratio (VNR) and the 
      extent of phase aliasing. Phase differences provide invariance to an unknown 
      background phase. Existing literature proposes processing a reduced set of phase 
      difference equations, simplifying the phase unwrapping problem at the expense of 
      VNR or unaliased range of velocities, or both. Here, we demonstrate that the 
      fullest unambiguous range of velocities is a parallelepiped, which can be 
      accessed by jointly processing all phase differences. The joint processing also 
      maximizes the velocity-to-noise ratio. The simple understanding of the 
      unambiguous parallelepiped provides the potential for analyzing new multi-point 
      acquisitions for an enhanced range of unaliased velocities; two examples are 
      given.
FAU - Zhao, Shen
AU  - Zhao S
AD  - The Ohio State University, Department of Electrical and Computer Engineering.
FAU - Ahmad, Rizwan
AU  - Ahmad R
AD  - The Ohio State University, Department of Electrical and Computer Engineering.
AD  - The Ohio State University, Department of Biomedical Engineering.
FAU - Potter, Lee C
AU  - Potter LC
AD  - The Ohio State University, Department of Electrical and Computer Engineering.
LA  - eng
GR  - R01 HL135489/HL/NHLBI NIH HHS/United States
GR  - R01 HL151697/HL/NHLBI NIH HHS/United States
PT  - Journal Article
DEP - 20220426
PL  - United States
TA  - Proc IEEE Int Symp Biomed Imaging
JT  - Proceedings. IEEE International Symposium on Biomedical Imaging
JID - 101492570
PMC - PMC9136874
MID - NIHMS1809822
OTO - NOTNLM
OT  - Phase-contrast imaging
OT  - multivariate congruence equations
OT  - phase unwrapping
EDAT- 2022/06/02 06:00
MHDA- 2022/06/02 06:01
PMCR- 2023/04/26
CRDT- 2022/06/01 11:34
PHST- 2022/06/01 11:34 [entrez]
PHST- 2022/06/02 06:00 [pubmed]
PHST- 2022/06/02 06:01 [medline]
PHST- 2023/04/26 00:00 [pmc-release]
AID - 10.1109/isbi52829.2022.9761589 [doi]
PST - ppublish
SO  - Proc IEEE Int Symp Biomed Imaging. 2022 Mar;2022:10.1109/isbi52829.2022.9761589. 
      doi: 10.1109/isbi52829.2022.9761589. Epub 2022 Apr 26.