Experimental investigations on intracavity sonography. Part 1: Alteration of imaging by variation of the contents of rigid hollow receptacles or isolated porcine urinary bladders.

Multiple artifacts may occur in the diagnostic application of sonography. Occasionally, these may make it difficult to differentiate real tissue structures. In order to investigate the imaging properties of ultrasound in intracavity investigation techniques, we have examined the imaging under different conditions in rigid hollow receptacles as well as in an isolated porcine urinary bladder. A measurable difference of sound conduction depended on the characteristics of the fluid (sound conductor): furthermore, accumulation of air in the hollow space lead to various interfering echos. The importance of a central position of a sound source for obtaining useful sonograms in intracavity ultrasonographic diagnosis was evident.