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Dataset Metadata
Publication Through
Goal

•	 Improve dataset discoverablitlity and reuseability by
publishing lightweight data papers

Principles

John Ernest Kratz
John.Kratz@ucop.edu
@john_kratz

John Kunze
Stephen Abrams
Greg Janée
Joan Starr
Carly Strasser

Patterns of age-related water diffusion changes in human
brain by concordance and discordance analysis.
Zhang, Yu; Du, An-Tao; Hayasaka, Satoru; Jahng, Geon-ho; Hlavin, Jennifer; Zhan, Wang; Weiner,
Michael W.; Schuff, Norbert; Memory and Aging Center

•	 Cheap: no extra effort from dataset authors required

•	 Flexible: authors have the option of putting in effort to get a
better paper
•	 Discoverable: expose dataset metadata fully for indexing
User creates identifier for dataset
with EZID
Identifier metadata
automatically formatted as a
publication

Published: 2012
Created: 10/11/2012 01:51 PM, Last modified: 11/12/2013 04:14 PM

Identifier: doi:10.7272/Q67P8W9Z Get link

PDF

Abstract

In diffusion tensor imaging (DTI), interpreting changes in terms of fractional
anisotropy (FA) and mean diffusivity or axial (D(||)) and radial (D(?)) diffusivity
can be ambiguous. The main objective of this study was to gain insight into the
heterogeneity of age-related diffusion changes in human brain white matter by
analyzing relationships between the diffusion measures in terms of
concordance and discordance instead of evaluating them separately, which is
difficult to interpret. Fifty-one cognitively normal subjects (22-79 years old) were
studied with DTI at 4 Tesla. Age was associated with widespread concordant
changes of decreased FA and increased MD but in some regions significant FA
reductions occurred discordant to MD changes. Prominent age-related FA
reductions were primarily related to greater radial (D(?)) than axial (D(||))
diffusivity changes, potentially reflecting processes of demyelination. In
conclusion, concordant/discordant changes of DTI indices provide additional
characterization of white matter alterations that accompany normal aging.

Citation

Zhang, Yu; Du, An-Tao; Hayasaka, Satoru; Jahng, Geon-ho; Hlavin, Jennifer; Zhan,
Wang; Weiner, Michael W.; Schuff, Norbert; Memory and Aging Center (2012):
Patterns of age-related water diffusion changes in human brain by concordance
and discordance analysis.. University of California, San Francisco. application/octetstream. http://dx.doi.org/doi:10.7272/q67p8w9z

EZID issues identifier

doi:10.7272/Q67P8W9Z

Search engines index
publication...
...making publication
and dataset discoverable

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Dataset
Subject Areas

• Adult [MeSH]
• Human [MeSH]
• Magnetic Resonance
Imaging [MeSH]
Diffusion Magnetic
•
Resonance Imaging
•
•
•
•
•
•

[MeSH]

Brain [MeSH]
Aged [MeSH]
Middle Aged [MeSH]
Young Adult [MeSH]
Anisotropy [MeSH]
Reference Values
[MeSH]

• Aging [MeSH]

Methods

Optionally, identifier
resolves to the
publication

XML

The dataset available here consists of Fractional Anisotropy (FA), Mean
Diffusivity (MD), Axial Diffusivity (I1), and Radial Diffusivity (Dra) images as well
as subject-study-specific normalization images (B0, see methods in paper) in
Analyze format. There are B0, FA, MD, I1, and Dra images for 51 subjects, and
a spreadsheet describing each subject's handedness (right, left or
ambidextrous), age (at time of scan), gender, ApoE alleles, and Mini-Mental
State Exam score. Data Acquisition Location: San Francisco VA Medical
Center; Scanner Type: Siemens Bruker 4T, equipped with a birdcage transmit
and 8 channel receive coil. DTI was based on a dual spin-echo echo-planar
imaging (EPI) sequence, augmented by parallel imaging acceleration
(GRAPPA) by a factor 2 to reduce susceptibility distortions. Other imaging
parameters were: TR/TE = 6000/77 ms; field of view 256 cm × 224 cm; 128 ×
112 matrix size, yielding 2 mm × 2 mm in-plane resolution; 40 continuous
slices, each 3 mm thick. A diffusion reference image (no diffusion gradient b =
0) and six diffusion-weighted images (b = 800 s/mm2 along 6 non-collinear
directions) were acquired. Four DTI scans were acquired and averaged after
motion correction to boost signal-to-noise.

About the
identifier

Publication
links
to...

Patterns of age‐related water diffusion changes
in human brain by concordance and discordance
analysis.
Yu Zhang, An­Tao Du, Satoru Hayasaka, Geon­ho Jahng, Jennifer Hlavin, Wang Zhan,
Michael W. Weiner, Norbert Schuff, Memory and Aging Center
UCSF Center for Imaging of Neurodegenerative Diseases University of California, San Francisco.
Submitted 2012. Report Generated 12:56pm October 28, 2013.

Dataset Citation
Zhang, Yu; Du, An­Tao; Hayasaka, Satoru; Jahng, Geon­ho; Hlavin, Jennifer; Zhan,
Wang; Weiner, Michael W.; Schuff, Norbert; Memory and Aging Center (2012): Patterns
of age­related water diffusion changes in human brain by concordance and
discordance analysis.. University of California, San Francisco. application/octet­stream.
http://dx.doi.org/doi:10.7272/q67p8w9z

Description
In diffusion tensor imaging (DTI), interpreting changes in terms of fractional anisotropy
(FA) and mean diffusivity or axial (D(||)) and radial (D(?)) diffusivity can be ambiguous.
The main objective of this study was to gain insight into the heterogeneity of age­related
diffusion changes in human brain white matter by analyzing relationships between the
diffusion measures in terms of concordance and discordance instead of evaluating them
separately, which is difficult to interpret. Fifty­one cognitively normal subjects (22­79
years old) were studied with DTI at 4 Tesla. Age was associated with widespread
concordant changes of decreased FA and increased MD but in some regions significant
FA reductions occurred discordant to MD changes. Prominent age­related FA reductions
were primarily related to greater radial (D(?)) than axial (D(||)) diffusivity changes,
potentially reflecting processes of demyelination. In conclusion, concordant/discordant

PDF version
<resource xmlns=”http://datacite.org/schema/kernel-3”
xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance”
xsi:schemaLocation=”http://datacite.org/schema/kernel-3
http://schema.datacite.org/meta/kernel-3/metadata.xsd”>
<identifier identifierType=”DOI”>10.7272/Q67P8W9Z</identifier>
<creators>
<creator><creatorName>Zhang, Yu</creatorName></creator>
<creator><creatorName>Du, An-Tao</creatorName></creator>
<creator><creatorName>Hayasaka, Satoru</creatorName></creator>
<creator><creatorName>Jahng, Geon-ho</creatorName></
creator>

Metadata as XML

Owner: merritt
Group: merritt
Co-owners: none

!

Created:
10/11/2012 01:51 PM
Last modified:
11/12/2013 04:14 PM

!

Status: public
Allow harvesting/
indexing? Yes

!

The Dataset itself

References

Zhang Y, Du AT, Hayasaka S, Jahng GH, Hlavin J, Zhan W, Weiner MW, Schuff N.
Patterns of age-related water diffusion changes in human brain by concordance
and discordance analysis. Neurobiol Aging. 2010 Nov;31(11):1991-2001. doi:
10.1016/j.neurobiolaging.2008.10.009. Epub 2008 Nov 25.

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Dataset Metadata Publication Through EZID

  • 1. Dataset Metadata Publication Through Goal • Improve dataset discoverablitlity and reuseability by publishing lightweight data papers Principles John Ernest Kratz John.Kratz@ucop.edu @john_kratz John Kunze Stephen Abrams Greg Janée Joan Starr Carly Strasser Patterns of age-related water diffusion changes in human brain by concordance and discordance analysis. Zhang, Yu; Du, An-Tao; Hayasaka, Satoru; Jahng, Geon-ho; Hlavin, Jennifer; Zhan, Wang; Weiner, Michael W.; Schuff, Norbert; Memory and Aging Center • Cheap: no extra effort from dataset authors required • Flexible: authors have the option of putting in effort to get a better paper • Discoverable: expose dataset metadata fully for indexing User creates identifier for dataset with EZID Identifier metadata automatically formatted as a publication Published: 2012 Created: 10/11/2012 01:51 PM, Last modified: 11/12/2013 04:14 PM Identifier: doi:10.7272/Q67P8W9Z Get link PDF Abstract In diffusion tensor imaging (DTI), interpreting changes in terms of fractional anisotropy (FA) and mean diffusivity or axial (D(||)) and radial (D(?)) diffusivity can be ambiguous. The main objective of this study was to gain insight into the heterogeneity of age-related diffusion changes in human brain white matter by analyzing relationships between the diffusion measures in terms of concordance and discordance instead of evaluating them separately, which is difficult to interpret. Fifty-one cognitively normal subjects (22-79 years old) were studied with DTI at 4 Tesla. Age was associated with widespread concordant changes of decreased FA and increased MD but in some regions significant FA reductions occurred discordant to MD changes. Prominent age-related FA reductions were primarily related to greater radial (D(?)) than axial (D(||)) diffusivity changes, potentially reflecting processes of demyelination. In conclusion, concordant/discordant changes of DTI indices provide additional characterization of white matter alterations that accompany normal aging. Citation Zhang, Yu; Du, An-Tao; Hayasaka, Satoru; Jahng, Geon-ho; Hlavin, Jennifer; Zhan, Wang; Weiner, Michael W.; Schuff, Norbert; Memory and Aging Center (2012): Patterns of age-related water diffusion changes in human brain by concordance and discordance analysis.. University of California, San Francisco. application/octetstream. http://dx.doi.org/doi:10.7272/q67p8w9z EZID issues identifier doi:10.7272/Q67P8W9Z Search engines index publication... ...making publication and dataset discoverable Download Dataset Subject Areas • Adult [MeSH] • Human [MeSH] • Magnetic Resonance Imaging [MeSH] Diffusion Magnetic • Resonance Imaging • • • • • • [MeSH] Brain [MeSH] Aged [MeSH] Middle Aged [MeSH] Young Adult [MeSH] Anisotropy [MeSH] Reference Values [MeSH] • Aging [MeSH] Methods Optionally, identifier resolves to the publication XML The dataset available here consists of Fractional Anisotropy (FA), Mean Diffusivity (MD), Axial Diffusivity (I1), and Radial Diffusivity (Dra) images as well as subject-study-specific normalization images (B0, see methods in paper) in Analyze format. There are B0, FA, MD, I1, and Dra images for 51 subjects, and a spreadsheet describing each subject's handedness (right, left or ambidextrous), age (at time of scan), gender, ApoE alleles, and Mini-Mental State Exam score. Data Acquisition Location: San Francisco VA Medical Center; Scanner Type: Siemens Bruker 4T, equipped with a birdcage transmit and 8 channel receive coil. DTI was based on a dual spin-echo echo-planar imaging (EPI) sequence, augmented by parallel imaging acceleration (GRAPPA) by a factor 2 to reduce susceptibility distortions. Other imaging parameters were: TR/TE = 6000/77 ms; field of view 256 cm × 224 cm; 128 × 112 matrix size, yielding 2 mm × 2 mm in-plane resolution; 40 continuous slices, each 3 mm thick. A diffusion reference image (no diffusion gradient b = 0) and six diffusion-weighted images (b = 800 s/mm2 along 6 non-collinear directions) were acquired. Four DTI scans were acquired and averaged after motion correction to boost signal-to-noise. About the identifier Publication links to... Patterns of age‐related water diffusion changes in human brain by concordance and discordance analysis. Yu Zhang, An­Tao Du, Satoru Hayasaka, Geon­ho Jahng, Jennifer Hlavin, Wang Zhan, Michael W. Weiner, Norbert Schuff, Memory and Aging Center UCSF Center for Imaging of Neurodegenerative Diseases University of California, San Francisco. Submitted 2012. Report Generated 12:56pm October 28, 2013. Dataset Citation Zhang, Yu; Du, An­Tao; Hayasaka, Satoru; Jahng, Geon­ho; Hlavin, Jennifer; Zhan, Wang; Weiner, Michael W.; Schuff, Norbert; Memory and Aging Center (2012): Patterns of age­related water diffusion changes in human brain by concordance and discordance analysis.. University of California, San Francisco. application/octet­stream. http://dx.doi.org/doi:10.7272/q67p8w9z Description In diffusion tensor imaging (DTI), interpreting changes in terms of fractional anisotropy (FA) and mean diffusivity or axial (D(||)) and radial (D(?)) diffusivity can be ambiguous. The main objective of this study was to gain insight into the heterogeneity of age­related diffusion changes in human brain white matter by analyzing relationships between the diffusion measures in terms of concordance and discordance instead of evaluating them separately, which is difficult to interpret. Fifty­one cognitively normal subjects (22­79 years old) were studied with DTI at 4 Tesla. Age was associated with widespread concordant changes of decreased FA and increased MD but in some regions significant FA reductions occurred discordant to MD changes. Prominent age­related FA reductions were primarily related to greater radial (D(?)) than axial (D(||)) diffusivity changes, potentially reflecting processes of demyelination. In conclusion, concordant/discordant PDF version <resource xmlns=”http://datacite.org/schema/kernel-3” xmlns:xsi=”http://www.w3.org/2001/XMLSchema-instance” xsi:schemaLocation=”http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd”> <identifier identifierType=”DOI”>10.7272/Q67P8W9Z</identifier> <creators> <creator><creatorName>Zhang, Yu</creatorName></creator> <creator><creatorName>Du, An-Tao</creatorName></creator> <creator><creatorName>Hayasaka, Satoru</creatorName></creator> <creator><creatorName>Jahng, Geon-ho</creatorName></ creator> Metadata as XML Owner: merritt Group: merritt Co-owners: none ! Created: 10/11/2012 01:51 PM Last modified: 11/12/2013 04:14 PM ! Status: public Allow harvesting/ indexing? Yes ! The Dataset itself References Zhang Y, Du AT, Hayasaka S, Jahng GH, Hlavin J, Zhan W, Weiner MW, Schuff N. Patterns of age-related water diffusion changes in human brain by concordance and discordance analysis. Neurobiol Aging. 2010 Nov;31(11):1991-2001. doi: 10.1016/j.neurobiolaging.2008.10.009. Epub 2008 Nov 25. ! ! EZID is a service of the University of California Curation Center of the California Digital Library Copyright © 2009-2014 The Regents of the University of California About Us Help Privacy Policy High Potential for Adoption • EZID already has rich metadata for >2000 datasets. • EZID is already incorporated into data management workflows through >100 clients and partners.