| Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | Journal of Magnetic Resonance Imaging | ||||
| Publisher: | WILEY | ||||
| Place of Publication: | HOBOKEN | ||||
| Volume: | 50 | ||||
| Number of Issue or Book Chapter: | 2 | ||||
| Page Range: | pp. 552-559 | ||||
| Date: | 2019 | ||||
| Institutions: | Medicine > Lehrstuhl für Neurologie Medicine > Lehrstuhl für Röntgendiagnostik Human Sciences > Institut für Psychologie Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee | ||||
| Identification Number: |
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| Keywords: | UPPER MOTOR-NEURON; WHITE-MATTER; CORTICOSPINAL TRACT; SIGNAL INTENSITY; PRECENTRAL GYRUS; FLAIR IMAGES; BRAIN; ALS; HYPERINTENSITY; ARTIFACTS; amyotrophic lateral sclerosis; FLAIR; LST | ||||
| Dewey Decimal Classification: | 100 Philosophy & psychology > 150 Psychology 600 Technology > 610 Medical sciences Medicine | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 48421 |
Web of ScienceAbstract
Background MRI fluid-attenuated inversion recovery (FLAIR) studies reported hyperintensity in the corticospinal tract and corpus callosum of patients with amyotrophic lateral sclerosis (ALS). Purpose To evaluate the lesion segmentation toolbox (LST) for the objective quantification of FLAIR lesions in ALS patients. Study Type Retrospective. Population Twenty-eight ALS patients (eight females, ...
Abstract
Background MRI fluid-attenuated inversion recovery (FLAIR) studies reported hyperintensity in the corticospinal tract and corpus callosum of patients with amyotrophic lateral sclerosis (ALS). Purpose To evaluate the lesion segmentation toolbox (LST) for the objective quantification of FLAIR lesions in ALS patients. Study Type Retrospective. Population Twenty-eight ALS patients (eight females, mean age: 50 range: 24-73, mean ALSFRS-R sum score: 36) were compared with 31 age-matched healthy controls (12 females, mean age: 45, range: 25-67). ALS patients were treated with riluzole and additional G-CSF (granulocyte-colony stimulating factor) on a named patient basis. Field Strength/Sequence 1.5 T, FLAIR, T-1-weighted MRI. Assessment The lesion prediction algorithm (LPA) of the LST enabled the extraction of individual binary lesion maps, total lesion volume (TLV), and number (TLN). Location and overlap of FLAIR lesions across patients were investigated by registration to FLAIR average space and an atlas. ALS-specific functional rating scale revised (ALSFRS-R), disease progression, and survival since diagnosis served as clinical correlates. Statistical Tests Univariate analysis of variance (ANOVA), repeated-measures ANOVA, t-test, Bravais-Pearson correlation, Chi-square test of independence, Kaplan-Meier analysis, Cox-regression analysis. Results Both ALS patients and healthy controls exhibited FLAIR alterations. TLN significantly depended on age (F(1,54) = 24.659, P < 0.001) and sex (F(1,54) = 5.720, P = 0.020). ALS patients showed higher TLN than healthy controls depending on sex (F(1, 54) = 5.076, P = 0.028). FLAIR lesions were small and most pronounced in male ALS patients. FLAIR alterations were predominantly detected in the superior and posterior corona radiata, anterior capsula interna, and posterior thalamic radiation. Patients with pyramidal tract (PT) lesions exhibited significantly inferior survival than patients without PT lesions (P = 0.013). Covariate age exhibited strong prognostic value for survival (P = 0.015). Data Conclusion LST enables the objective quantification of FLAIR alterations and is a potential prognostic biomarker for ALS. Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;50:552-559.
Metadata last modified: 03 Sep 2021 09:55
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