Clinical characteristics of ARIA
| ARIA Component | Primary Diagnostic Imaging Sequence | Nature of Leakage Products | Location of Increased Vascular Permeability | |
|---|---|---|---|---|
| Parenchyma | Leptomeninges | |||
| ARIA-E | FLAIR | Proteinaceous fluid | Vasogenic edema | Sulcal effusion/exudate |
| ARIA-H | GRE/T2* | Heme products | Microhemorrhage (hemosiderin deposits <10 mm or large hemosiderin deposits ≥10 mm) | Superficial hemosiderin deposits |
Note:—GRE indicates gradient recalled-echo.