Figure 1.

Measurement of ventricular width and regions of interest in the four regions of periventricular white matter in normal subjects.

(A) Measurement of ventricular width and calculations of relative width ratios for the ventricular body, anterior horn, and posterior horn. (B) Regions of interest in the four regions of periventricular white matter. Anterior corona radiata (CR), posterior CR, genu of the corpus callosum (CC), and splenium of the CC. Yellow blocks mean the loca-tion of region of interest for the anterior and posterior corona radiata, and blue lines mean the outline of region of interest for the definition of anterior and posterior corona radiata.