Long-PVSUNet: A Longitudinal Deep Learning Framework for Count-Oriented Perivascular Space Segmentation in Brain MRI.
Enlarged perivascular spaces (ePVS) are small, sparse MRI-visible markers of cerebral small vessel disease and brain ageing. Their size, low contrast, and severe foreground-background imbalance make automated segmentation challenging. Existing methods are mainly cross-sectional and do not model temporal consistency, li...