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 language | English |
|---|---|
| Pages (from-to) | 4169-4174 |
| Number of pages | 6 |
| Journal | World Journal of Gastroenterology |
| Volume | 18 |
| Issue number | 31 |
| DOIs | |
| Publication status | Published - 2012 Oct 26 |
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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 journal › Article
}
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
VL - 18
SP - 4169
EP - 4174
JO - World Journal of Gastroenterology
JF - World Journal of Gastroenterology
SN - 1007-9327
IS - 31
ER -