[Sonographically controlled preparation for biopsy of the small intestine with the Watson capsule--significantly decreased radiation burden]. / Sonographisch geführte Vorbereitung zur Dünndarmbiopsie mit der Watson-Kapsel--signifikant verringerte Strahlenbelastung.

Diagnostic ultrasound showed that the passing of the Watson capsule through the pylorus can be proved demonstrating its catheter within the pylorus. Only the biopsy itself has to be done under radiologic control which results in decreasing X-ray time from sometimes six minutes to a few seconds, usually less than one minute.