In comparison with other applications of virtual endoscopy, reports about virtual cystocopy are limited. In this update article, the various techniques of magnetic resonance (MR) and computed tomographic (CT) cystography are explained with their inherent advantages and disadvantages. The principal methods of postprocessing are presented, and future technical developments of MR and CT cystography are described. The present clinical applications and the possible role of MR and CT cystography in the future are discussed.