Endoscopy 2018; 50(04): S62
DOI: 10.1055/s-0038-1637211
ESGE Days 2018 oral presentations
20.04.2018 – Best care session 2
Georg Thieme Verlag KG Stuttgart · New York

EVALUATION OF AN INNOVATIVE 3D IMAGE GUIDED COLONOSCOPE SYSTEM USING FIBER BRAG GRATING ARRAY – 3D COLONOSCOPE SHAPE IMAGING BASED ON FIBER BRAG GRATING ARRAY

W Kim
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
B Keum
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
SJ Choi
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
G Min
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
JM Lee
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
SH Kim
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
JM Lee
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
HS Choi
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
ES Kim
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
YT Jeen
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
HJ Chun
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
HS Lee
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
CD Kim
1   Korea University, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Korea, Republic of
,
S Yang
2   Korea Institute of Science and Technology, Center for Bionics, Seoul, Korea, Republic of
,
MS Jang
2   Korea Institute of Science and Technology, Center for Bionics, Seoul, Korea, Republic of
,
J Kim
2   Korea Institute of Science and Technology, Center for Bionics, Seoul, Korea, Republic of
› Author Affiliations
Further Information

Publication History

Publication Date:
27 March 2018 (online)

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Aims:

Colonoscopy is a challenging procedure due to unpredictable looping during insertion. If the endoscopist is able to see the colonoscope on the image display, fewer attempts are needed to straighten the shaft of the scope. A prototype Fiber Brag Grating (FBG) scope guided endoscopy provides a facility for continuous viewing on a monitor of the position of the colonoscope during examination. The aim of this study was to evaluate the accuracy and feasibility of the innovative 3D Colonoscope using FBG.

Methods:

The FBG sensor was inserted into the working channel of a routine colonoscope in the first 70 cm from the tip of the scope. Then, the scope was placed in front of the monitor to confirm movement of the scope in all three dimensions. We evaluated loop formation such as N loop, alpha loop, reverse alpha loop, with the 3D imaging monitor. In the second part of the study, 5 patients underwent colonoscopy with a FBG sensor, the colonoscope can be displayed in anteroposterior or lateral view, or in both positions together. The Fluoroscopy was used in all investigations for comparison.

Results:

At first, the results showed that the shape sensor was reliable at a maximum bending curvature of 80 mm-1. The average tip position error was 1.722 ± 1.678 mm, which corresponds to 1.50 ± 1.46% of the total length of the sensor. Scope movement and loops were detected correctly in all cases through the monitor. The prototype used in the second part of the study showed a high correlation and little discrepancy with the comparative findings at fluoroscopy.

Conclusions:

Scope guided endoscopy using FBG sensor can be successfully used to display colonoscope configuration. This flexible, thin and almost weightless shape sensor would be a novel technique for identification of colonoscope shape.