Background. Two-dimensional ultrasonography remains the most frequently used angiosonographic method of investigation in the treatment of cerebrovascular diseases. Three-dimensional ultrasonography, however, represents a significant superstructure, opening new diagnostic possibilities. In the present paper, the author presents these possibilities and compares both methods.

Conclusions. Three-dimensional ultrasonography is a significant investigative method offering new possibilities in diagnosing cerebrovascular diseases. It is reliable, noninvasive, repeatable and cheaper than other imaging methods of investigation.