Cerebellar Diaschisis Assessment in Ischemic Stroke

Crossed cerebellar diaschisis (CCD) is a remote functional deficit characterised by reduced perfusion and metabolic activity in the cerebellar hemisphere contralateral to a supratentorial infarct. It results from disruption of cortico-ponto-cerebellar tracts and has emerged as a meaningful marker of global ischaemic burden. Accurate detection of CCD informs clinical severity assessment, prognostic stratification and the planning of therapeutic interventions. Traditional positron emission tomography (PET) methods remain the reference standard for metabolic mapping but are limited by radiation exposure and resource demands. Magnetic resonance approaches, notably arterial spin-labelling (ASL) and dynamic susceptibility contrast (DSC) perfusion, permit repeatable, noninvasive quantification of blood flow asymmetries. Complementary blood oxygenation level-dependent cerebrovascular reserve (BOLD-CVR) imaging elucidates vascular reactivity and steal phenomena that accompany diaschisis. Quantitative indices—such as contralateral asymmetry ratios and steal volumes—have been linked to initial stroke severity scores and long-term functional outcomes. Integration of multimodal imaging has thus advanced our understanding of CCD as both a pathophysiological phenomenon and a prognostic biomarker in both acute and chronic ischaemic stroke.

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Cerebellar Diaschisis Assessment in Ischemic Stroke publication trend

The graph below shows the total number of articles in cerebellar diaschisis assessment in ischemic stroke across all publications each year (not limited to Nature Index journals).

Technical terms

Crossed cerebellar diaschisis (CCD): Remote reduction of blood flow and metabolism in the cerebellar hemisphere contralateral to a cerebral lesion due to disrupted cortico-ponto-cerebellar pathways.

Arterial spin-labelling (ASL): A noninvasive MRI technique using magnetically labelled arterial blood water to quantify cerebral blood flow without contrast agents.

Dynamic susceptibility contrast (DSC) perfusion: An MRI method tracking gadolinium-based contrast boluses to generate cerebral blood flow and volume maps based on susceptibility changes.

Blood oxygen level-dependent cerebrovascular reserve (BOLD-CVR): An MRI approach that measures changes in BOLD signal in response to vasodilatory challenges, reflecting the capacity of cerebral vessels to dilate.

References

1. Detection of crossed cerebellar diaschisis in hyperacute ischemic stroke using arterial spin-labeled MR imaging. PLOS ONE (2017).
2. Crossed Cerebellar Diaschisis Indicates Hemodynamic Compromise in Ischemic Stroke Patients. Translational Stroke Research (2020).
3. Crossed Cerebellar Diaschisis in Acute Stroke Detected by Dynamic Susceptibility Contrast MR Perfusion Imaging. American Journal of Neuroradiology (2009).
4. Crossed cerebellar diaschisis-related supratentorial hemodynamic and metabolic status measured by PET/MR in assessing postoperative prognosis in chronic ischemic cerebrovascular disease patients with bypass surgery. Annals of Nuclear Medicine (2022).
5. Crossed Cerebellar Diaschisis. Medicine (2016).