Literature DB >> 4046992

Noise and filtration in magnetic resonance imaging.

E R McVeigh, R M Henkelman, M J Bronskill.   

Abstract

Noise in two-dimensional Fourier transform magnetic resonance images has been investigated using noise power spectra and measurements of standard deviation. The measured effects of averaging, spatial filtering, temporal filtering, and sampling have been compared with theoretical calculations. The noise of unfiltered images is found to be white, as expected, and the choice of the temporal filter and sampling interval affects the noise in a manner predicted by sampling theory. The shapes of the imager's spatial frequency filters are extracted using noise power spectra.

Mesh：

Year:  1985        PMID： 4046992      PMCID： PMC2169200          DOI： 10.1118/1.595679

Source DB:  PubMed          Journal:  Med Phys        ISSN： 0094-2405            Impact factor:   4.071


  2 in total

1.  Truncation artifacts in magnetic resonance imaging.

Authors:  M L Wood; R M Henkelman
Journal:  Magn Reson Med       Date:  1985-12       Impact factor: 4.668

2.  The observer SNR penalty for reconstructions from projections.

Authors:  R F Wagner; D G Brown; A E Burgess; K M Hanson
Journal:  Magn Reson Med       Date:  1984-03       Impact factor: 4.668
  2 in total
  24 in total

1.  MODEL-BASED IMAGE RECONSTRUCTION FOR MRI.

Authors:  Jeffrey A Fessler
Journal:  IEEE Signal Process Mag       Date:  2010-07-01       Impact factor: 12.551

2.  Part 1. Automated change detection and characterization in serial MR studies of brain-tumor patients.

Authors:  Julia Willamena Patriarche; Bradley James Erickson
Journal:  J Digit Imaging       Date:  2007-09       Impact factor: 4.056

3.  A majorize-minimize framework for Rician and non-central chi MR images.

Authors:  Divya Varadarajan; Justin P Haldar
Journal:  IEEE Trans Med Imaging       Date:  2015-04-28       Impact factor: 10.048

4.  Optimization of survey protocols for MRI.

Authors:  E R McVeigh; R M Henkelman; M J Bronskill
Journal:  Magn Reson Med       Date:  1990-02       Impact factor: 4.668

5.  Quantitative cardiac perfusion: a noninvasive spin-labeling method that exploits coronary vessel geometry.

Authors:  S B Reeder; M K Atalay; E R McVeigh; E A Zerhouni; J R Forder
Journal:  Radiology       Date:  1996-07       Impact factor: 11.105

6.  Signal-to-noise measurements in magnitude images from NMR phased arrays.

Authors:  C D Constantinides; E Atalar; E R McVeigh
Journal:  Magn Reson Med       Date:  1997-11       Impact factor: 4.668

7.  Relation between one- and two-dimensional noise power spectra of magnetic resonance images.

Authors:  Yuki Ichinoseki; Yoshio Machida
Journal:  Radiol Phys Technol       Date:  2016-10-03

8.  On the Expectation-Maximization Algorithm for Rice-Rayleigh Mixtures With Application to Noise Parameter Estimation in Magnitude MR Datasets.

Authors:  Ranjan Maitra
Journal:  Sankhya B (2008)       Date:  2013-01-22

9.  Accurate high-resolution measurements of 3-D tissue dynamics with registration-enhanced displacement encoded MRI.

Authors:  Arnold D Gomez; Samer S Merchant; Edward W Hsu
Journal:  IEEE Trans Med Imaging       Date:  2014-03-14       Impact factor: 10.048

10.  Regularized field map estimation in MRI.

Authors:  Amanda K Funai; Jeffrey A Fessler; Desmond T B Yeo; Valur T Olafsson; Douglas C Noll
Journal:  IEEE Trans Med Imaging       Date:  2008-10       Impact factor: 10.048
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