From the Cleveland Clinic Foundation (J.M.G., C.A.S.), Cleveland, Ohio;
the University of Maryland Medical Center (M.A.S.), Baltimore, Md; and the
Duke University Medical Center (K.W.M., C.B.G., C.L.G.), Durham, NC.
Correspondence to Cathy A. Sila, MD, Cerebrovascular Center, Department of Neurology (S91), Cleveland Clinic Foundation, 9500 Euclid Ave, Cleveland, OH 44195. E-mail silac{at}cesmtp.ccf.org
Background and Purpose—The
volume of an intracerebral hemorrhage has been
shown to be an important independent predictor of mortality in several
reports.1 2 3 4 5 A technique for estimating hematoma volume,
known as the ABC/2 method, has been proven a reliable, simple bedside
technique for the volume measurement of intraparenchymal
intracerebral hemorrhage.6 7 8
Subdural hematomas also carry a significant mortality risk but are more
amenable to surgical evacuation. A reliable, simple bedside measurement
of subdural hematoma volume may prove a valuable tool in
prognostication and management of patients with this entity.
Methods—Computed tomographic (CT) brain scans of 244 patients
suffering from intracranial hemorrhage in the GUSTO-1 trial
were systematically reviewed. The volumes of 298 intraparenchymal
hematomas were measured by the ABC/2 technique, and the volumes of 44
subdural hematomas were measured by an adaptation of this technique and
compared to computer-assisted volumetric analysis.
Results—Excellent correlation between the techniques were
achieved for both subdural (r=0.842; slope, 0.982) and
intraparenchymal hematoma volume measurements (r=0.929;
slope, 1.11).
Conclusions—The ABC/2 method is a simple and accurate technique
for the measurement of intraparenchymal hematoma volume, and a simple
adaptation allows for a similarly accurate measurement of subdural
hematoma volume as well.
© 1998 American Heart Association, Inc.
Original Contributions
Comparison of the ABC/2 Estimation Technique to Computer-Assisted Volumetric Analysis of Intraparenchymal and Subdural Hematomas Complicating the GUSTO-1 Trial
Key Words: cerebral hemorrhage • subdural hemorrhage • computer-assisted image processing
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