Sensitivity of the suspected blood indicator: An experimental study

Sung Chul Park, Hoon-Jai Chun, Eun-Sun Kim, Bora Keum, Yeon Seok Seo, Yong Sik Kim, Yoon Tae Jeen, Hong Sik Lee, Soon-Ho Um, Chang Duck Kim, Ho Sang Ryu

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

AIM: To investigate whether suspected blood indicator (SBI) in capsule endoscopy (CE) is affected by background color and capsule passage velocity. METHODS: Experimental models of the small intestine constructed from paper in a variety of colors were used to simulate the background colors observed in CE images. The background colors studied included very pale yellow, yellow, very pale magenta, light grayish pink, burnt sienna, and deep and dark brown, and red spots were attached inside them. An endoscopic capsule was manually passed through the models. The rate of detection of the red spots by the SBI was evaluated based on the colors of the models and the capsule passage velocities (0.5 cm/s, 1 cm/s, and 2 cm/s). RESULTS: The rate of detection of the red spots by the SBI differed significantly according to the background color of the model (P < 0.001). Detection rates were highest for backgrounds of very pale magenta, burnt sienna, and yellow, in that order. They were lowest for backgrounds of dark brown and very pale yellow. The rate of detection of red spots by the SBI tended to decrease at rapid capsule passage velocities (1-2 cm/s) compared to slow velocities (0.5 cm/s) for backgrounds of very pale yellow (P = 0.042), yellow (P = 0.001), very pale magenta (P = 0.002), and burnt sienna (P = 0.001). No significant differences in the rate of detection were observed according to velocity for light grayish pink (P = 0.643) or dark brown (P = 0.396). CONCLUSION: SBI sensitivity was affected by background color and capsule passage velocity in the models. These findings may facilitate the rapid detection of bleeding lesions by CE.

Original languageEnglish
Pages (from-to)4169-4174
Number of pages6
JournalWorld Journal of Gastroenterology
Volume18
Issue number31
DOIs
Publication statusPublished - 2012 Oct 26

Fingerprint

Color
Capsules
Capsule Endoscopy
Light
Small Intestine
Theoretical Models
Hemorrhage

Keywords

  • Background color
  • Capsule endoscopy
  • Passage velocity
  • Sensitivity
  • Suspected blood indicator

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Sensitivity of the suspected blood indicator : An experimental study. / Park, Sung Chul; Chun, Hoon-Jai; Kim, Eun-Sun; Keum, Bora; Seo, Yeon Seok; Kim, Yong Sik; Jeen, Yoon Tae; Lee, Hong Sik; Um, Soon-Ho; Kim, Chang Duck; Ryu, Ho Sang.

In: World Journal of Gastroenterology, Vol. 18, No. 31, 26.10.2012, p. 4169-4174.

Research output: Contribution to journalArticle

@article{db2e2b7156ba4a228296da1330697c78,
title = "Sensitivity of the suspected blood indicator: An experimental study",
abstract = "AIM: To investigate whether suspected blood indicator (SBI) in capsule endoscopy (CE) is affected by background color and capsule passage velocity. METHODS: Experimental models of the small intestine constructed from paper in a variety of colors were used to simulate the background colors observed in CE images. The background colors studied included very pale yellow, yellow, very pale magenta, light grayish pink, burnt sienna, and deep and dark brown, and red spots were attached inside them. An endoscopic capsule was manually passed through the models. The rate of detection of the red spots by the SBI was evaluated based on the colors of the models and the capsule passage velocities (0.5 cm/s, 1 cm/s, and 2 cm/s). RESULTS: The rate of detection of the red spots by the SBI differed significantly according to the background color of the model (P < 0.001). Detection rates were highest for backgrounds of very pale magenta, burnt sienna, and yellow, in that order. They were lowest for backgrounds of dark brown and very pale yellow. The rate of detection of red spots by the SBI tended to decrease at rapid capsule passage velocities (1-2 cm/s) compared to slow velocities (0.5 cm/s) for backgrounds of very pale yellow (P = 0.042), yellow (P = 0.001), very pale magenta (P = 0.002), and burnt sienna (P = 0.001). No significant differences in the rate of detection were observed according to velocity for light grayish pink (P = 0.643) or dark brown (P = 0.396). CONCLUSION: SBI sensitivity was affected by background color and capsule passage velocity in the models. These findings may facilitate the rapid detection of bleeding lesions by CE.",
keywords = "Background color, Capsule endoscopy, Passage velocity, Sensitivity, Suspected blood indicator",
author = "Park, {Sung Chul} and Hoon-Jai Chun and Eun-Sun Kim and Bora Keum and Seo, {Yeon Seok} and Kim, {Yong Sik} and Jeen, {Yoon Tae} and Lee, {Hong Sik} and Soon-Ho Um and Kim, {Chang Duck} and Ryu, {Ho Sang}",
year = "2012",
month = "10",
day = "26",
doi = "10.3748/wjg.v18.i31.4169",
language = "English",
volume = "18",
pages = "4169--4174",
journal = "World Journal of Gastroenterology",
issn = "1007-9327",
publisher = "WJG Press",
number = "31",

}

TY - JOUR

T1 - Sensitivity of the suspected blood indicator

T2 - An experimental study

AU - Park, Sung Chul

AU - Chun, Hoon-Jai

AU - Kim, Eun-Sun

AU - Keum, Bora

AU - Seo, Yeon Seok

AU - Kim, Yong Sik

AU - Jeen, Yoon Tae

AU - Lee, Hong Sik

AU - Um, Soon-Ho

AU - Kim, Chang Duck

AU - Ryu, Ho Sang

PY - 2012/10/26

Y1 - 2012/10/26

N2 - AIM: To investigate whether suspected blood indicator (SBI) in capsule endoscopy (CE) is affected by background color and capsule passage velocity. METHODS: Experimental models of the small intestine constructed from paper in a variety of colors were used to simulate the background colors observed in CE images. The background colors studied included very pale yellow, yellow, very pale magenta, light grayish pink, burnt sienna, and deep and dark brown, and red spots were attached inside them. An endoscopic capsule was manually passed through the models. The rate of detection of the red spots by the SBI was evaluated based on the colors of the models and the capsule passage velocities (0.5 cm/s, 1 cm/s, and 2 cm/s). RESULTS: The rate of detection of the red spots by the SBI differed significantly according to the background color of the model (P < 0.001). Detection rates were highest for backgrounds of very pale magenta, burnt sienna, and yellow, in that order. They were lowest for backgrounds of dark brown and very pale yellow. The rate of detection of red spots by the SBI tended to decrease at rapid capsule passage velocities (1-2 cm/s) compared to slow velocities (0.5 cm/s) for backgrounds of very pale yellow (P = 0.042), yellow (P = 0.001), very pale magenta (P = 0.002), and burnt sienna (P = 0.001). No significant differences in the rate of detection were observed according to velocity for light grayish pink (P = 0.643) or dark brown (P = 0.396). CONCLUSION: SBI sensitivity was affected by background color and capsule passage velocity in the models. These findings may facilitate the rapid detection of bleeding lesions by CE.

AB - AIM: To investigate whether suspected blood indicator (SBI) in capsule endoscopy (CE) is affected by background color and capsule passage velocity. METHODS: Experimental models of the small intestine constructed from paper in a variety of colors were used to simulate the background colors observed in CE images. The background colors studied included very pale yellow, yellow, very pale magenta, light grayish pink, burnt sienna, and deep and dark brown, and red spots were attached inside them. An endoscopic capsule was manually passed through the models. The rate of detection of the red spots by the SBI was evaluated based on the colors of the models and the capsule passage velocities (0.5 cm/s, 1 cm/s, and 2 cm/s). RESULTS: The rate of detection of the red spots by the SBI differed significantly according to the background color of the model (P < 0.001). Detection rates were highest for backgrounds of very pale magenta, burnt sienna, and yellow, in that order. They were lowest for backgrounds of dark brown and very pale yellow. The rate of detection of red spots by the SBI tended to decrease at rapid capsule passage velocities (1-2 cm/s) compared to slow velocities (0.5 cm/s) for backgrounds of very pale yellow (P = 0.042), yellow (P = 0.001), very pale magenta (P = 0.002), and burnt sienna (P = 0.001). No significant differences in the rate of detection were observed according to velocity for light grayish pink (P = 0.643) or dark brown (P = 0.396). CONCLUSION: SBI sensitivity was affected by background color and capsule passage velocity in the models. These findings may facilitate the rapid detection of bleeding lesions by CE.

KW - Background color

KW - Capsule endoscopy

KW - Passage velocity

KW - Sensitivity

KW - Suspected blood indicator

UR - http://www.scopus.com/inward/record.url?scp=84867697724&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84867697724&partnerID=8YFLogxK

U2 - 10.3748/wjg.v18.i31.4169

DO - 10.3748/wjg.v18.i31.4169

M3 - Article

C2 - 22919250

AN - SCOPUS:84867697724

VL - 18

SP - 4169

EP - 4174

JO - World Journal of Gastroenterology

JF - World Journal of Gastroenterology

SN - 1007-9327

IS - 31

ER -