Design of a video capsule endoscopy system with low-power ASIC for monitoring gastrointestinal tract.
In recent years, wireless capsule endoscopy (WCE) has been a state-of-the-art tool to examine disorders of the human gastrointestinal tract painlessly. However, system miniaturization, enhancement of the image-data transfer rate and power consumption reduction for the capsule are still key challenge...
| Publicado en: | Medical & Biological Engineering & Computing Vol. 54; no. 11; pp. 1779 - 1792 |
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| Autores principales: | , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Nov2016
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=118887914&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 118887914 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 01400118 PO0 jtl: Medical & Biological Engineering & Computing issn: 01400118 maglogo: N pubinfo: dt: Nov2016 vid: 54 iid: 11 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 118887914 118887914 NLM27016367 10.1007/s11517-016-1472-2 NLM27016367 118887914 ppf: 1779 ppct: 13 formats: fmt: @attributes: type: P tig: atl: Design of a video capsule endoscopy system with low-power ASIC for monitoring gastrointestinal tract. aug: au: Liu, Gang Yan, Guozheng Zhu, Bingquan Lu, Li affil: Institute of Precise Engineering and Intelligent Microsystems , Shanghai Jiaotong University , Shanghai 200240 People's Republic of China sug: subj: Electronics Gastrointestinal System Monitoring, Physiologic Equipment and Supplies Capsule Endoscopy Equipment and Supplies Swine Wireless Communications Equipment Design Image Processing, Computer Assisted Radio Waves Animals Light Ferrans and Powers Quality of Life Index Scales ab: In recent years, wireless capsule endoscopy (WCE) has been a state-of-the-art tool to examine disorders of the human gastrointestinal tract painlessly. However, system miniaturization, enhancement of the image-data transfer rate and power consumption reduction for the capsule are still key challenges. In this paper, a video capsule endoscopy system with a low-power controlling and processing application-specific integrated circuit (ASIC) is designed and fabricated. In the design, these challenges are resolved by employing a microimage sensor, a novel radio frequency transmitter with an on-off keying modulation rate of 20 Mbps, and an ASIC structure that includes a clock management module, a power-efficient image compression module and a power management unit. An ASIC-based prototype capsule, which measures Φ11 mm × 25 mm, has been developed here. Test results show that the designed ASIC consumes much less power than most of the other WCE systems and that its total power consumption per frame is the least. The image compression module can realize high near-lossless compression rate (3.69) and high image quality (46.2 dB). The proposed system supports multi-spectral imaging, including white light imaging and autofluorescence imaging, at a maximum frame rate of 24 fps and with a resolution of 400 × 400. Tests and in vivo trials in pigs have proved the feasibility of the entire system, but further improvements in capsule control and compression performance inside the ASIC are needed in the future. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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