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petrous adj.1.巖石(似)的,硬的。2.【解剖學】顳骨巖部的...

petticoat

An anterior sigmoid sinus tend to be observed when the distance between petrous back wall and external auditory canal is shorter . 5 . 11 / 40 ( 27 . 5 % ) posterior lip of internal acoustic meatus cover facial nerve more than 1 / 3 氣化的乳突其顳骨巖部后骨板與外耳道后壁之間距離較大,外耳道后壁和顳骨巖部后硬腦膜之間距離也反映了乙狀竇前移程度,該距離愈小,乙狀竇愈有前移傾向。

Ct and mr imaging showed a densely calcified nodule with fatty bone marrow component protruding from the inner surface of petrous bone but not involving the internal auditory canal 計算機斷層與磁振造影檢查顯示一致密鈣化結節,內含脂髓,由巖骨內緣凸出,但未侵犯內耳聽道。

Ct and mr imaging showed a densely calcified nodule with fatty bone marrow component protruding from the inner surface of petrous bone but not involving the internal auditory canal 電腦斷層與磁振造影檢查顯示一致密鈣化結節,內含脂髓,由巖骨內緣凸出,但未侵犯內耳聽道。

The excellence of latter is that its incision can be adjusted optional . 4 . 17 . 5 % of specimens have angled variation of the back wall of petrous bone 約有17 . 5顳骨巖部后骨板有成角變異( 7側) ,且以后外緣為多。