Field Of Vision
Copyright ©2012 Baishideng Publishing Group Co., Limited. All rights reserved.
World J Gastroenterol. Aug 21, 2012; 18(31): 4086-4090
Published online Aug 21, 2012. doi: 10.3748/wjg.v18.i31.4086
Three-dimensional image reconstruction in capsule endoscopy
Anastasios Koulaouzidis, Alexandros Karargyris
Anastasios Koulaouzidis, Centre for Liver and Digestive Disorders, The Royal Infirmary of Edinburgh, Scotland EH16 4SA, United Kingdom
Alexandros Karargyris, National Library of Medicine, National Institutes of Health, Bethesda, MD 20814, United States
Author contributions: Koulaouzidis A and Karargyris A collected the material, discussed the topic and wrote the manuscript.
Correspondence to: Dr. Anastasios Koulaouzidis, MD, MRCP, FEBG, Centre for Liver and Digestive Disorders, The Royal Infirmary of Edinburgh, 51 Little France Crescent, Edinburgh, Scotland EH16 4SA, United Kingdom.
Telephone: +44-131-2421126 Fax: +44-131-2421618
Received: June 20, 2012
Revised: July 13, 2012
Accepted: July 18, 2012
Published online: August 21, 2012

To date, limited research has been carried out in developing methods and materials that offer three-dimensional (3-D) representation of the digestive tract. In the field of capsule endoscopy (CE), hardware approaches have been developed that provide real time both 3-D information and texture using an infrared projector and a complementary metal oxide semiconductor camera. The major drawbacks of this system are its size, power consumption and packaging issues. A software approach to approximate a 3-D representation of digestive tract surface utilising current CE technology has been proposed. The algorithm utilizes the Shape from Shading technique and seem to provide promising results for polypoid structures and angioectasias. Further clinical evaluation is currently under way.

Keywords: Capsule endoscopy, Three-dimensional, Reconstruction, Angioectasias, Software