Three-dimensional representation software as image enhancement tool in small-bowel capsule endoscopy: A feasibility study

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• 作者：Anastasios Koulaouzidis ; Alex ; ros Karargyris ; Emanuele Rondonotti ; Colin L. Noble ; Sarah Douglas ; Efstratios Alex ; ridis ; Ali M. Zahid ; Andrew J. Bathgate ; Ken C. Trimble ; John N. Plevris
• 关键词：Capsule endoscopy ; Enhancement ; Feasibility ; Inflammatory ; Polyps ; Reconstruction ; Small-bowel ; Software ; Three-dimensional ; Vascular
• 刊名：Digestive and Liver Disease
• 出版年：2013
• 出版时间：November, 2013
• 年：2013
• 卷：45
• 期：11
• 页码：909-914
• 全文大小：828 K

文摘

Background

Three-dimensional imaging in capsule endoscopy is not currently feasible due to hardware limitations. However, software algorithms that enable three-dimensional reconstruction in capsule endoscopy are available.

Methods

Feasibility study. A phantom was designed to test the accuracy of three-dimensional reconstruction. Thereafter, 192 small-bowel capsule endoscopy images (of vascular: 50; inflammatory: 73; protruding structures: 69) were reviewed with the aid of a purpose-built three-dimensional reconstruction software. Seven endoscopists rated visualisation improved or non-improved. Subgroup analyses performed for diagnostic category, diagnosis, image surface morphology and colour and SBCE equipment used (PillCam^? vs. MiroCam^?).

Results

Overall, phantom experiments showed that the three-dimensional reconstruction software was accurate at 90 % of red, 70 % of yellow and 45 % of white phantom models. Enhanced visualisation for 56 % of vascular, 23 % of inflammatory and <10 % of protruding structures was noted (P = 0.007, 0.172 and 0.008, respectively). Furthermore, three-dimensional software application enhanced 53.7 % of red, 21.8 % of white, 17.3 % of red and white, and 9.2 % of images of lesions with colour similar to that of the surrounding mucosa, P < 0.0001.

Conclusions

Application of a three-dimensional reconstruction software in capsule endoscopy leads to image enhancement for a significant proportion of vascular, but less so for inflammatory and protruding lesions. Until optics technology allows hardware-enabled three-dimensional reconstruction, it seems a plausible alternative.