When contrast-enhanced CT depicts hypervascularity of the mesentery with vascular dilatation, tortuosity, and wide spacing of the vasa recta , the comb sign is produced.

当增强CT显示血管扩张、迂曲而血管增多的肠系膜和广泛分布的直小血管，产生梳征。

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Spinal epidural hemangiomas can have various MR features, but common features (despite histopathologic type) include lobular contour, a rim of low T2 signal intensity, and solid hypervascularity.

脊椎硬膜外血管瘤在MRI上表现多样，但共同的特点（不管其组织病理类型）包括分叶状轮廓，T2序列上低信号环，实性的富血供病变。

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