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Fig. 1 | BMC Medical Imaging

Fig. 1

From: Radiological evaluation in patients with clinical suspicion of cerebral venous sinus thrombosis presenting with nontraumatic headache - a retrospective observational study with a validation cohort

Fig. 1

a Region of interest delineation in the superior sagittal sinus was performed on 0.63 mm thin axial slices at the level above the lateral ventricles as a triangular shape in the sinus. b Region of interest delineation in the left and right sigmoid sinus was performed on axial 0.63 mm thick slices at the level of the internal acoustic meatus in the sinus. Red arrow indicates region of measurement. c A region of interest (ROI) in the left and right transverse sinus was performed on reformatted 5 mm sagittal slices at the level just lateral to the lateral ventricles as a triangular shaped ROI. Red arrow indicates region of measurement. d A region of interest (ROI) in the torcular herophili was delineated on sagittal reformatted 0.63 mm thick slices

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