Maximum anteroposterior diameter of the hemorrhage in mm.
Maximum mediolateral diameter of the hemorrhage in mm.
Absolute number of slices on CT or MRI.
Thickness of a single slice in mm.
Ellipsoid calculation of hemorrhage volume
The volume of an intracerebral hemorrhage can be calculated using the simple ellipsoid approximation formula (A x B x C) / 2 when accurate volumetric measurement using specialized software is not possible1 where A is the greatest anteroposterior diameter, B is the greatest mediolateral diameter, and C is the height on the CT or MRI image.
References