rn t They can sometimes be detected on x-rays but are not easily seen and are often overlooked. rn t They can sometimes be detected by their smell (like stale smoke or a strong sour smell). This can happen if a fistula has formed from the cavitation into the mouth. rn t The most reliable diagnostic is by means of a Cavitat / CaviTAU Scan. rn t The CaviTAU scan shows the extent of a cavitation infection in 3D. rn