Evidence map›Paper›PMID 24386081›Full record

ArticlePloS one2013

Is the cerebellum the optimal reference region for intensity normalization of perfusion MR studies in early Alzheimer's disease?

María Lacalle-Aurioles, Yasser Alemán-Gómez, Juan Adán Guzmán-De-Villoria, Isabel Cruz-Orduña, Javier Olazarán, José María Mateos-Pérez, María Elena Martino, Manuel Desco

Abstract readEvaluation Study
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Aberrant vascular architecture in the hippocampus correlates with tau burden in mild cognitive impairment and Alzheimer's disease.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
    Article
  5. Article
  6. Article
  7. Associations between Vascular Function and Tau PET Are Associated with Global Cognition and Amyloid.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  8. Comparison of simultaneous arterial spin labeling MRI andJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2020
    Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
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

8 authors.

María Lacalle-AuriolesDepartamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Leganés, Madrid, Spain ; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain ; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.
Yasser Alemán-GómezInstituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain ; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.
Juan Adán Guzmán-De-VilloriaServicio de Radiodiagnóstico. Hospital General Universitario Gregorio Marañón, Madrid, Spain.
Isabel Cruz-OrduñaServicio de Neurología, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
Javier OlazaránServicio de Neurología, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
José María Mateos-PérezCentro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain ; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
María Elena MartinoInstituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain.
Manuel DescoDepartamento de Bioingeniería e Ingeniería Aeroespacial, Universidad Carlos III de Madrid, Leganés, Madrid, Spain ; Instituto de Investigación Sanitaria Gregorio Marañón, Madrid, Spain ; Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cerebellum is the region most commonly used as a reference when normalizing the intensity of perfusion images acquired using magnetic resonance imaging (MRI) in Alzheimer's disease (AD) studies. In addition, the cerebellum provides unbiased estimations with nuclear medicine techniques. However, no reports confirm the cerebellum as an optimal reference region in MRI studies or evaluate the consequences of using different normalization regions. In this study, we address the effect of using the cerebellum, whole-brain white matter, and whole-brain cortical gray matter in the normalization of cerebral blood flow (CBF) parametric maps by comparing patients with stable mild cognitive impairment (MCI), patients with AD and healthy controls. According to our results, normalization by whole-brain cortical gray matter enables more sensitive detection of perfusion abnormalities in AD patients and reveals a larger number of affected regions than data normalized by the cerebellum or whole-brain white matter. Therefore, the cerebellum is not the most valid reference region in MRI studies for early stages of AD. After normalization by whole-brain cortical gray matter, we found a significant decrease in CBF in both parietal lobes and an increase in CBF in the right medial temporal lobe. We found no differences in perfusion between patients with stable MCI and healthy controls either before or after normalization.

Indexed as

AgedAlzheimer DiseaseBrainCerebellumCerebrumCognitive DysfunctionFemaleHumansMagnetic Resonance ImagingMaleReference ValuesRegional Blood Flow

Identifiers

PMID24386081
PMCPMC3873914

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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.