Quantitative assessment on blood–brain barrier permeability of acute spontaneous intracerebral hemorrhage in basal ganglia: a CT perfusion study
Blood–brain barrier (BBB) damage aggravates perihematomal edema, and edema volume predicts prognosis independently. But the BBB permeability at the late stage of acute intracerebral hemorrhage (ICH) patients is uncertain. We aimed to assess the BBB permeability of spontaneous basal ganglia ICH using computed tomographic perfusion (CTP) and investigates its relationship with hematoma and perihematomal edema volume.
We performed CTP on 54 consecutive ICH patients within 24 to 72 h after symptom onset. Permeability-surface area product (PS) derived from CTP imaging was measured in hematoma, “high-PS spot,” perihematoma, normal-appearing, hemispheric, and contralateral regions. Hematoma and edema volumes were calculated from non-contrast CT.
“High-PS spot” and perihematoma regions had higher PS than the contralateral regions (p < 0.001). Hematoma PS was lower than that in the contralateral regions (p < 0.001). Perihematoma PS of the large-hematoma group was higher than that of the small-hematoma group (p = 0.011). Perihematomal edema volume correlated positively with hematoma volume (β = 0.864, p < 0.001) and perihematoma PS (β = 0.478, p < 0.001). Perihematoma PS correlated positively with hematoma volume (β = 0.373, p = 0.005).
Locally elevated perihematoma PS was found in most spontaneous basal ganglia ICH patients within 24 to 72 h after symptom onset. Perihematoma PS was higher in larger hematomas and was associated with larger edema volume. At this period, BBB leakage is likely to be an important factor in edema formation.
KeywordsCerebral hemorrhage Blood–brain barrier Capillary permeability Edema Perfusion imaging
We thank the Zhenjiang Provincial Key Laboratory of Aging and Neurological Disorder Research (LH-001).
Compliance with ethical standards
This study was funded by the Zhenjiang Provincial Key Laboratory of Aging and Neurological Disorder Research (LH-001).
Conflict of interest
The authors declare that they have no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.
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