Evidence map›Paper›PMID 21958592›Full record

ArticleBiochimica et biophysica acta2012

Empirical derivation of the reference region for computing diagnostic sensitive ¹⁸fluorodeoxyglucose ratios in Alzheimer's disease based on the ADNI sample.

Jerod M Rasmussen, Anita Lakatos, Theo G M van Erp, Frithjof Kruggel, David B Keator, James T Fallon, Fabio Macciardi, Steven G Potkin, Alzheimer's Disease Neuroimaging Initiative

Abstract readMulticenter Study
In one paragraph

Article in Biochimica et biophysica acta, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Observational
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  14. The Alzheimer's Disease Neuroimaging Initiative: a review of papers published since its inception.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2013
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Jerod M RasmussenDepartment of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA. rasmussj@uci.edu
Anita Lakatos
Theo G M van Erp
Frithjof Kruggel
David B Keator
James T Fallon
Fabio Macciardi
Steven G Potkin
Alzheimer's Disease Neuroimaging Initiative
University of California, Irvine · US

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
Neuropathology CoreP30AG013846 · NIA · BOSTON UNIVERSITY MEDICAL CAMPUS · PI KOWALL, NEIL W. · 1996 to 2020
$29.1M
FUNCTION BIRNU24RR021992 · NCRR · UNIVERSITY OF CALIFORNIA-IRVINE · PI POTKIN, STEVEN G · 2006 to 2010
$25.0M
SCRIPPS TRANSLATIONAL SCIENCE INSTITUTE (UL1)UL1RR025774 · NCRR · SCRIPPS RESEARCH INSTITUTE, THE · PI TOPOL, ERIC JEFFREY · 2008 to 2011
$16.3M
BIO-INFORMATICS RESEARCH NETWORK COORDINATING CENTER (BIRN-CC)U24RR025736 · NCRR · UNIVERSITY OF SOUTHERN CALIFORNIA · PI KESSELMAN, CARL · 2009 to 2011
$15.0M
Transdisciplinary Imaging Genetics Center (RMI)P20RR020837 · NCRR · UNIVERSITY OF CALIFORNIA-IRVINE · PI POTKIN, STEVEN G · 2004 to 2006
$1.7M
NCRR NIH HHS 1 U24 RR025736-01NCRR NIH HHS P20 RR020837NCRR NIH HHS P20 RR020837-01NCRR NIH HHS U24 RR021992NCRR NIH HHS U24-RR021992NCRR NIH HHS U24 RR025736NCRR NIH HHS UL1 RR025774NIA NIH HHS 3U01AG024904-03S5NIA NIH HHS P30 AG013846NIA NIH HHS U01 AG024904NIA NIH HHS U01 AG024904-01
6 · The paper itself

Abstract

Careful selection of the reference region for non-quantitative positron emission tomography (PET) analyses is critically important for Region of Interest (ROI) data analyses. We introduce an empirical method of deriving the most suitable reference region for computing neurodegeneration sensitive (18)fluorodeoxyglucose (FDG) PET ratios based on the dataset collected by the Alzheimer's Disease Neuroimaging Initiative (ADNI) study. Candidate reference regions are selected based on a heat map of the difference in coefficients of variation (COVs) of FDG ratios over time for each of the Automatic Anatomical Labeling (AAL) atlas regions normalized by all other AAL regions. Visual inspection of the heat map suggests that the portion of the cerebellum and vermis superior to the horizontal fissure is the most sensitive reference region. Analyses of FDG ratio data show increases in significance on the order of ten-fold when using the superior portion of the cerebellum as compared with the traditionally used full cerebellum. The approach to reference region selection in this paper can be generalized to other radiopharmaceuticals and radioligands as well as to other disorders where brain changes over time are hypothesized and longitudinal data is available. Based on the empirical evidence presented in this study, we demonstrate the usefulness of the COV heat map method and conclude that intensity normalization based on the superior portion of the cerebellum may be most sensitive to measuring change when performing longitudinal analyses of FDG-PET ratios as well as group comparisons in Alzheimer's disease. This article is part of a Special Issue entitled: Imaging Brain Aging and Neurodegenerative disease.

Indexed as

Fluorodeoxyglucose F18RadiopharmaceuticalsAgedAged, 80 and overAlzheimer DiseaseCerebellumFemaleFollow-Up StudiesHumansLongitudinal StudiesMaleMiddle AgedNeuroimagingPositron-Emission TomographyFluorodeoxyglucose F18Radiopharmaceuticals

Identifiers

PMID21958592
PMCPMC5849233
OpenAlexW2059776115

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.