The<unk> , also known as reversal<unk>  or dense<unk> <unk> , is a radiological<unk>  denoting the relatively<unk>  appearance of the<unk>  due to a generalized decrease in density of the supratentorial brain structures caused by extensive edema.
White cerebellum sign
Deep sulcus sign
Frontal release sign
Rey–Osterrieth complex figure
Blue field entoptic phenomenon
Warburg's tincture
Lhermitte's sign
Phaedra complex