Fig. 1
From: Overview of technical solutions and assessment of clinical usefulness of capsule endoscopy
Distinction of the nomenclature relating to capsules, wirelessness and video. Red shows the area covered by the definition “Capsule”, yellow “Wireless” and blue “Video”. The respective intersections of these areas (circles) refer to different types of endoscopy. WCE (video capsule endoscopy), VCE (wireless capsule endoscopy), WVE (wireless video endoscopy) when two areas intersect and WVC (wireless video capsule) when all three areas intersect