Voxel-based morphometry in individual patients: a pilot study in early Huntington disease.

Muhlau, M; Wohlschläger, AM; Gaser, C; Valet, M; Weindl, A; Nunnemann, S; Peinemann, A; Etgen, T; Ilg, R

doi:10.3174/ajnr.A1390

2009

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Title:: Voxel-based morphometry in individual patients: a pilot study in early Huntington disease.
Document type:: Journal Article; Article
Author(s):: Muhlau, M; Wohlschläger, AM; Gaser, C; Valet, M; Weindl, A; Nunnemann, S; Peinemann, A; Etgen, T; Ilg, R
Abstract:: BACKGROUND AND PURPOSE: Voxel-based morphometry (VBM) has proved a powerful method to detect subtle changes of gray matter (GM) at the group level but the role of VBM for the detection of GM changes in single subjects, especially in those with suspected neurodegenerative disorder, remains uncertain. Here, we performed single subject analyses in 22 patients in early stages of Huntington disease (HD), a neurodegenerative disorder with a well-known and characteristic pattern of GM loss. MATERIALS AND METHODS: We applied an ANCOVA with age and gender as covariates and corrected for multiple statistical tests by false discovery rate (P < 0.05). Each patient was compared to 133 healthy controls. The same procedure was applied to 22 of the controls matched for age and gender in a pair-wise manner. RESULTS: Our analyses yielded biologically plausible results in HD patients in which GM decrease within the caudate nucleus could be identified in 15 of the 16 most affected patients while GM decrease was found in only 1 control subject. Lowering the size of the control group yielded comparable results with 99 and 66 control subjects whereas sensitivity decreased with 33 control subjects. CONCLUSIONS: Our pilot study demonstrates a potential role of VBM for the detection of cerebral GM changes in single subjects with suspected neurodegenerative disorder.
Journal title abbreviation:: AJNR Am J Neuroradiol
Year:: 2009
Journal volume:: 30
Journal issue:: 3
Pages contribution:: 539-43
Language:: eng
Fulltext / DOI:: doi:10.3174/ajnr.A1390
Pubmed ID:: http://view.ncbi.nlm.nih.gov/pubmed/19074546
Print-ISSN:: 0195-6108
TUM Institution:: Fachgebiet Neuroradiologie (Prof. Zimmer); Klinik und Poliklinik für Psychiatrie und Psychotherapie; Neurologische Klinik und Poliklinik
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