Automated Cross-Sectional Measurement Method of Intracranial Dural Venous Sinuses

Abstract

BACKGROUND AND PURPOSE:MRV is an important blood vessel imaging and diagnostic tool for the evaluation of stenosis, occlusions, or aneurysms. However, an accurate image-processing tool for vessel comparison is unavailable. The purpose of this study was to develop and test an automated technique for vessel cross-sectional analysis.

Quantifying response to intracranial pressure normalization in idiopathic intracranial hypertension via dynamic neuroimaging

“…Concurring with previous studies, we demonstrated that all four principal cranial blood sinuses investigated had significantly increased cross‐sectional areas after LP. There were no significant differences between cross‐sectional area data after LP and that of controls.…”

“… Cross‐sectional vessel analysis was performed using the recently reported automated algorithm for quantification of vessel cross‐sectional changes (Fig. ).…”

“…The percent difference between obstruction normalization volumes calculated before and after LP was used to define recovery of POR. 7)Supplemental drainage veins: Some patients formed supplemental drainage pathways in addition to their obstructed transverse sinuses, creating an escape route for the obstructed transverse sinus segment. A previously described vessel‐cross‐sectional analysis was applied to evaluate the mean cross‐sectional area of supplement drainage pathways. 8)Evaluation of Meckel's cave volume: Segmentation of Meckel's caves was obtained with a region‐growing algorithm applied to MRV images (Fig. d).…”

Comparison of the sagittal sinus cross-sectional area between patients with multiple sclerosis, hydrocephalus, intracranial hypertension and spontaneous intracranial hypotension: a surrogate marker of venous transmural pressure?

“…We can see from Table 1 that the shape of the sinuses of all groups was midway between that of a circle and triangle and not significantly different to each other. The sagittal sinus circularity has been previously published in control subjects and is 0.77 [7], which is not significantly different to the current study.…”

“…The shape of the sinuses was tested by calculating the circularity. Circularity is defined by the formula where A is the cross-sectional area in mm 2 and L the circumference in mm [7]. It can be seen that a circle of radius R would return a circularity value of 1.…”