Title: A Wireless Narrowband Imaging Chip for Capsule Endoscope
Authors: Dung, Lan-Rong
Wu, Yin-Yi
Institute of Electrical and Control Engineering
Keywords: Capsule endoscope;complementary metal-oxide semiconductor (CMOS) sensor;gastrointestinal image;narrowband image (NBI)
Issue Date: 1-Dec-2010
Abstract: This paper presents a dual-mode capsule gastrointestinal endoscope device. An endoscope combined with a narrowband image (NBI), has been shown to be a superior diagnostic tool for early stage tissue neoplasms detection. Nevertheless, a wireless capsule endoscope with the narrowband imaging technology has not been presented in the market up to now. The narrowband image acquisition and power dissipation reduction are the main challenges of NBI capsule endoscope. In this paper, we present the first narrowband imaging capsule endoscope that can assist clinical doctors to effectively diagnose early gastrointestinal cancers, profited from our dedicated dual-mode complementary metal-oxide semiconductor (CMOS) sensor. The dedicated dual-mode CMOS sensor can offer white-light and narrowband images. Implementation results show that the proposed 512 x 512 CMOS sensor consumes only 2 mA at a 3-V power supply. The average current of the NBI capsule with an 8-Mb/s RF transmitter is nearly 7 similar to 8 mA that can continuously work for 6 similar to 8 h with two 1.5-V 80-mAh button batteries while the frame rate is 2 fps. Experimental results on backside mucosa of a human tongue and pig's small intestine showed that the wireless NBI capsule endoscope can significantly improve the image quality, compared with a commercial-of-the-shelf capsule endoscope for gastrointestinal tract diagnosis.
URI: http://dx.doi.org/10.1109/TBCAS.2010.2079932
ISSN: 1932-4545
DOI: 10.1109/TBCAS.2010.2079932
Volume: 4
Issue: 6
Begin Page: 462
End Page: 468
Appears in Collections:Conferences Paper

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