The role of radiological investigations in estimation of convexital intracranial masses volume

Research objective. Studying of radiological methods possibilities for diagnostics of convexital intracranial masses in brain injuries and brain tumors with a quantitative assessment of their volume. Materials and methods. Volume measurement of convexital intracranial masses in 78 patients with brain injuries and 35 patients with meningovascular tumors by means of a spiral CT and/or MRI is done. In 25 patients with brain injuries an epidural and in 21 patients a subdural hematomas were revealed. In 29 patients with meningovascular tumors convexital meningiomas were diagnosed. Results of research. While CT or MRI of brain we defined two points most distant from each other on a border of convexital mass, then we scanned a plane through them and measured distance between them. Further we drew a line (A) between the specified points and measured the sizes of perpendiculars, lined to an internal plate of the bone (h 1) and to border between the brain and the formation (h 2). On the planes of scanning, perpendicular to line (A), we defined two points as much as possible distant from each other on a border of convexital formation, and measured the distance (B) between them. The required volume was calculated by the formula, as the sum or the subtraction of ellipsoids segments volumes. Conclusions. We offered the neuroimaging way of defining the volume of convexital intracranial masses. Its informative value is 93,5 %. Radiological diagnostics in a convexital brain injuries and brain tumors with estimation of volumes by the offered formula helps to plan surgical intervention.