Radiology, Vol 133, 741-746, Copyright © 1979 by Radiological Society of North America
Intracranial blood clot volume and geometric parameters determined from CT images
SR Thomas, JE McLennan, JG Kereiakes, R Neff, AA Chambers and RR Lukin
A method of determining intracranial blood vlot volumes from CT images data
is presented. This technique avoids dependence on regular geometric volume
approximations. Studies are presented on phantoms of known volume (ranging
from 3.5 to 108 cm3) but with varying size, shape, and density relative to
the surrounding medium. For a wide range of differential densities across
the boundary, these phantom results indicate that volumes may be calculated
to an accuracy generally better than +/- 2 cm3. A series of clinical cases,
principally hypertensive intracranial hemorrhages, have been studied to
demonstrate the technique. Three-dimensional axes, which allow clot
localization relative to cerebral anatomy, are defined using the
anterior/posterior falx attachment points and the dorsum sellae. Clot
volume, center of mass, vector of clot expansion, and shift of anatomical
structures are determined. Correlation of these data with clinical outcome
and surgery is discussed.
