Comput Math Methods Med - Fully automated detection of corticospinal tract damage in chronic stroke patients.

Tópicos

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Resumo

Structural integrity of the corticospinal tract (CST) after stroke is closely linked to the degree of motor impairment. However, current methods for measurement of fractional atrophy (FA) of CST based on region of interest (ROI) are time-consuming and open to bias. Here, we used tract-based spatial statistics (TBSS) together with a CST template with healthy volunteers to quantify structural integrity of CST automatically. Two groups of patients after ischemic stroke were enrolled, group 1 (10 patients, 7 men, and Fugl-Meyer assessment (FMA) scores 50) and group 2 (12 patients, 12 men, and FMA scores = 100). CST of FA(ipsi), FA(contra), and FA(ratio) was compared between the two groups. Relative to group 2, FA was decreased in group 1 in the ipsilesional CST (P < 0.01), as well as the FA(ratio) (P < 0.01). There was no significant difference between the two subgroups in the contralesional CST (P = 0.23). Compared with contralesional CST, FA of ipsilesional CST decreased in group 1 (P < 0.01). These results suggest that the automated method used in our study could detect a surrogate biomarker to quantify the CST after stroke, which would facilitate implementation of clinical practice.

Resumo Limpo

structur integr corticospin tract cst stroke close link degre motor impair howev current method measur fraction atrophi fa cst base region interest roi timeconsum open bias use tractbas spatial statist tbss togeth cst templat healthi volunt quantifi structur integr cst automat two group patient ischem stroke enrol group patient men fuglmey assess fma score group patient men fma score cst faipsi facontra faratio compar two group relat group fa decreas group ipsilesion cst p well faratio p signific differ two subgroup contralesion cst p compar contralesion cst fa ipsilesion cst decreas group p result suggest autom method use studi detect surrog biomark quantifi cst stroke facilit implement clinic practic

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