Fast variable density Poisson-disc sample generation with directional variation for compressed sensing in MRI.
Compressed sensing
Parallel imaging
Poisson disc
Sampling
Journal
Magnetic resonance imaging
ISSN: 1873-5894
Titre abrégé: Magn Reson Imaging
Pays: Netherlands
ID NLM: 8214883
Informations de publication
Date de publication:
04 2021
04 2021
Historique:
received:
14
04
2020
revised:
27
10
2020
accepted:
16
11
2020
pubmed:
25
11
2020
medline:
17
4
2021
entrez:
24
11
2020
Statut:
ppublish
Résumé
We present a fast method for generating random samples according to a variable density poisson-disc distribution. A minimum parameter value is used to create a background grid array for keeping track of those points that might affect any new candidate point; this reduces the number of conflicts that must be checked before acceptance of a new point, thus reducing the number of computations required. We demonstrate the algorithm's ability to generate variable density poisson-disc sampling patterns according to a parameterized function, including patterns where the variations in density are a function of direction. We further show that these sampling patterns are appropriate for compressed sensing applications. Finally, we present a method to generate patterns with a specific acceleration rate.
Identifiants
pubmed: 33232767
pii: S0730-725X(20)30647-0
doi: 10.1016/j.mri.2020.11.012
pmc: PMC7878411
mid: NIHMS1648888
pii:
doi:
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
186-193Subventions
Organisme : NIBIB NIH HHS
ID : P41 EB015891
Pays : United States
Organisme : NHLBI NIH HHS
ID : R01 HL136965
Pays : United States
Informations de copyright
Copyright © 2020 Elsevier Inc. All rights reserved.
Références
Magn Reson Med. 2008 Feb;59(2):365-73
pubmed: 18228595
Magn Reson Med. 2002 Jun;47(6):1202-10
pubmed: 12111967
Magn Reson Med. 2007 Dec;58(6):1182-95
pubmed: 17969013
Proc Natl Acad Sci U S A. 2003 Mar 4;100(5):2197-202
pubmed: 16576749
Magn Reson Med. 2014 Mar;71(3):990-1001
pubmed: 23649942
Magn Reson Med. 2014 Oct;72(4):959-70
pubmed: 24248734
Magn Reson Med. 1997 Oct;38(4):591-603
pubmed: 9324327
Magn Reson Med. 2017 May;77(5):1774-1785
pubmed: 27097596
IEEE Trans Med Imaging. 1991;10(2):154-63
pubmed: 18222812
Proc IEEE Int Symp Biomed Imaging. 2011 Dec 31;2011:1039-1043
pubmed: 24443670
Magn Reson Med. 1999 Nov;42(5):952-62
pubmed: 10542355
IEEE Trans Vis Comput Graph. 2013 Sep;19(9):1425-37
pubmed: 23846089