Format

Send to:

Choose Destination
See comment in PubMed Commons below
Front Hum Neurosci. 2013 Feb 26;7:52. doi: 10.3389/fnhum.2013.00052. eCollection 2013.

Methodological considerations in longitudinal morphometry of traumatic brain injury.

Author information

  • 1Moss Rehabilitation Research Institute Elkins Park, PA, USA.

Abstract

Traumatic brain injury (TBI) has recently been reconceptualized as a chronic, evolving disease process. This new view necessitates quantitative assessment of post-injury changes in brain structure that may allow more accurate monitoring and prediction of recovery. In particular, TBI is known to trigger neurodegenerative processes and therefore quantifying progression of diffuse atrophy over time is currently of utmost interest. However, there are various methodological issues inherent to longitudinal morphometry in TBI. In this paper, we first overview several of these methodological challenges: lesion evolution, neurosurgical procedures, power, bias, and non-linearity. We then introduce a sensitive, reliable, and unbiased longitudinal multivariate analysis protocol that combines dimensionality reduction and region of interest approaches. This analysis pipeline is demonstrated using a small dataset consisting of four chronic TBI survivors.

KEYWORDS:

bias; longitudinal; magnetic resonance imaging; power; sparse canonical correlation analysis

PMID:
23549059
[PubMed]
PMCID:
PMC3581852
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Frontiers Media SA Icon for PubMed Central
    Loading ...
    Write to the Help Desk