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We evaluated the function of the human glymphatic system (GS) in patients with spontaneous intracerebral haemorrhage (sICH) using diffusion tensor imaging analysis along with the perivascular space (DTI-ALPS). Twenty patients with sICH and 31 healthy controls (HCs) were recruited for analysis. The results showed that DTI-ALPS index on the lesion side was significantly decreased, but not in the contralateral side in sICH or in HCs. And, the decreased DTI-ALPS index was significantly correlated with disease duration. This study confirmed the presence of GS dysfunction only ipsilateral to the lesion, indicating the GS may be a separate system in bilateral hemispheres.
Zhang et al. (Wed,) studied this question.