Triaxial Infarct Volume: Rapid Measurement

In medical sectional imaging by computed tomography (CT) and magnetic resonance (MRI), a lesion's volume can be estimated quickly to clinically useful accuracy from just its three perpendicular axes ("triaxial"). This tutorial PowerPoint (uploaded as a PDF whose citation links go live when it is downloaded) defines terms, compares variations on the triaxial theme, and delves into finer points of mastery. Appended slides give references for triaxial measurement and comment on what has been held out as an alternative, an irregular scoring system for brain infarcts called ASPECTS.