Fig. 1From: Supratubal recess and sinus tympani: CT analysis of middle ear hidden areasa, b Supratubal recess (STR) (red arrows) in axial CT images and their relation to the ossicles and incudomalleal articulation. c The right and left STR formed of one cell. d The right STR formed of multi-cells while the left one formed of one cell. e Both the right and left STR) formed of multi-cellsBack to article page