Regional White Matter Atrophy--based Classification of Multiple Sclerosis in Cross-sectional and Longitudinal Data

Overview

Journal AJNR Am J Neuroradiol

Specialty Neurology

Date 2009 Aug 22

PMID 19696139

Citations 2

Authors

M P Sampat

A M Berger

B C Healy

P Hildenbrand

J Vass

D S Meier

T Chitnis

H L Weiner

R Bakshi

C R G Guttmann

Affiliations

Soon will be listed here.

Abstract

Background And Purpose: The different clinical subtypes of multiple sclerosis (MS) may reflect underlying differences in affected neuroanatomic regions. Our aim was to analyze the effectiveness of jointly using the inferior subolivary medulla oblongata volume (MOV) and the cross-sectional area of the corpus callosum in distinguishing patients with relapsing-remitting multiple sclerosis (RRMS), secondary-progressive multiple sclerosis (SPMS), and primary-progressive multiple sclerosis (PPMS).

Materials And Methods: We analyzed a cross-sectional dataset of 64 patients (30 RRMS, 14 SPMS, 20 PPMS) and a separate longitudinal dataset of 25 patients (114 MR imaging examinations). Twelve patients in the longitudinal dataset had converted from RRMS to SPMS. For all images, the MOV and corpus callosum were delineated manually and the corpus callosum was parcellated into 5 segments. Patients from the cross-sectional dataset were classified as RRMS, SPMS, or PPMS by using a decision tree algorithm with the following input features: brain parenchymal fraction, age, disease duration, MOV, total corpus callosum area and areas of 5 segments of the corpus callosum. To test the robustness of the classification technique, we applied the results derived from the cross-sectional analysis to the longitudinal dataset.

Results: MOV and central corpus callosum segment area were the 2 features retained by the decision tree. Patients with MOV >0.94 cm(3) were classified as having RRMS. Patients with progressive MS were further subclassified as having SPMS if the central corpus callosum segment area was <55.12 mm(2), and as having PPMS otherwise. In the cross-sectional dataset, 51/64 (80%) patients were correctly classified. For the longitudinal dataset, 88/114 (77%) patient time points were correctly classified as RRMS or SPMS.

Conclusions: Classification techniques revealed differences in affected neuroanatomic regions in subtypes of multiple sclerosis. The combination of central corpus callosum segment area and MOV provides good discrimination among patients with RRMS, SPMS, and PPMS.

Citing Articles

The role of information system in multiple sclerosis management.

Ajami S, Ahmadi G, Etemadifar M J Res Med Sci. 2015; 19(12):1175-84.

PMID: 25709660 PMC: 4333527.

Corpus callosum atrophy correlates with gray matter atrophy in patients with multiple sclerosis.

Klawiter E, Ceccarelli A, Arora A, Jackson J, Bakshi S, Kim G J Neuroimaging. 2014; 25(1):62-7.

PMID: 24816394 PMC: 4265578. DOI: 10.1111/jon.12124.

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