[Systematic ultrasound measurements of the lateral ventricles: an A-scan/B-scan comparison].

In 100 newborn and infants the total diameter of both lateral ventricles in the region of cella-media was measured ultrasonographically by one-dimensional (A-Scan) and two-dimensional (B-Scan) technique. Comparison of the results of both methods showed good correlation (r = 0,945). Possible reasons of differing results are discussed. The importance of cella-media-index is emphasized. The transparietal A-Scan technique is sufficiently reliable in determining the width of the lateral ventricles. However, the B-Scan (through the open fontanel) will give many additional informations about intracranial structures and should be applied whenever possible.