Duodenum identification mechanism for capsule endoscopy.

Woo, Sang Hyo; Mohy-Ud-Din, Zia; Cho, Jin Ho
IEEE transactions on bio-medical engineering
2011Apr ; 58 ( 4 ) :905-12.
저자 상세정보
Woo, Sang Hyo -
Mohy-Ud-Din, Zia -
Cho, Jin Ho -
ABSTRACT
The aim of this study is to implement a duodenum identification mechanism for capsule endoscopes because commercially available capsule endoscopes sometimes present a false negative diagnosis of the duodenum. One reason for the false negative diagnosis is that the duodenum is the fastest moving part within the gastrointestinal tract and the current frame rate of the capsule is not fast enough. When the capsule can automatically identify that it is in the duodenum, the frame rate of the capsule can be temporarily increased to reduce the possibility of a false negative diagnosis. This study proposes a mechanism to identify the duodenum using capacitive proximity sensors that can distinguish the surrounding tissue and transmit data using RF communication. The implemented capsule (D11 mm 횞 L22 mm) was smaller than the commercially available capsule endoscopes, and power consumption was as low as 0.642 mW. Preexperiments were conducted to select an appropriate electrode width in order to increase the signal-to-noise ratio (SNR), and in vitro experiments were conducted to verify whether the implemented capsule could identify the duodenum within 3 s. The experiment showed that the identification rate of duodenum was 93% when the velocity of the capsule was less than 1 cm/s.
Capacitive proximity sensor, capsule endoscope, duodenum, telemetry, electrostatic
MESH
*Algorithms, Animals, Capsule Endoscopy/*instrumentation, Duodenum/*anatomy & histology/*physiology, Electric Capacitance, *Electrodes, Equipment Design, Equipment Failure Analysis, Humans, In Vitro Techniques, Plethysmography, Impedance/*instrumentation, Reproducibility of Results, Sensitivity and Specificity, Swine
링크

주제코드
주제명(Target field)
연구대상(Population)
연구참여(Sample size)
대상성별(Gender)
질병특성(Condition Category)
연구환경(Setting)
연구설계(Study Design)
연구기간(Period)
중재방법(Intervention Type)
중재명칭(Intervention Name)
키워드(Keyword)
유효성결과(Recomendation)
Identification rate of duodenum was 93% when the velocity of the capsule was less than 1 cm/s.
연구비지원(Fund Source)
근거수준평가(Evidence Hierarchy)
출판년도(Year)
참여저자수(Authors)
대표저자
DOI
10.1109/TBME.2010.2095849
KCD코드
ICD 03
건강보험코드