Fig. 5From: Retrosigmoid approach assisted by high-resolution computed tomography: a cost-effective technique to identify the transverse and sigmoid sinus transitiona The relationships between the projected TSSTs and the actual TSSTs on the left side are revealed. b The relationships between the projected TSSTs and the actual TSSTs on the right side are revealed. Each subdivision is 1 × 1 cm2. The asterisk symbol represents the projected TSST, and the locations of the actual TSSTs which were distributed into each subdivision were recorded as a percentageBack to article page