CT Colonography Predictably Overestimates Colonic Length and Distance to Polyps Compared With Optical Colonoscopy

Duncan, James E.; McNally, Michael P.; Sweeney, W. Brian; Gentry, Andrew; Barlow, Duncan; Jensen, Donald W.; Cash, Brooks D.

doi:10.2214/ajr.09.2365

Cited by 22 publications

(18 citation statements)

References 20 publications

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“…The estimations of colon length by 3D‐Transit in the current study are close to optical colonoscopy lengths in a study by Duncan et al . . They compared colon lengths obtained with optical colonoscopy (overall average of 108 cm) and CT colonography (overall average of 189 cm) in 338 patients .…”

Section: Discussionmentioning

confidence: 99%

Assessment of colorectal length using the electromagnetic capsule tracking system: a comparative validation study in healthy subjects

et al. 2017

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Section: Discussionmentioning

confidence: 99%

Assessment of colorectal length using the electromagnetic capsule tracking system: a comparative validation study in healthy subjects

et al. 2017

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“…Our technique using CT scans in living individuals with no major structural bowel disorder is arguably the most accurate method of measuring large bowel length since it avoids the inherent errors in measuring bowel length at autopsy (Ahrens et al, ; Hounnou et al, ), laparotomy (variable tension applied to the bowel and measurement of length along the antimesenteric border), and colonoscopy (which tends to underestimate bowel length when the bowel is concertinaed over the endoscope; Duncan et al, ). In adults, the mean length of the colon varies between 108 and 133 cm when measured in vivo (Table ; Sadahiro et al, ; Saunders et al, ; Madiba et al, ; Duncan et al, ; Jayasekeran et al, ; Alatise et al, ) compared with 131–181 cm when measured at autopsy (Saunders et al, ; Hounnou et al, ; Phillips et al, ). It is well recognized that the intestine lengthens after death, probably because of loss of muscular tone (Ahrens et al, ).…”

Section: Discussionmentioning

confidence: 99%

The length of the large intestine in children determined by computed tomography scan

2017

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Little information is available on the length of the normal large intestine and its component parts in children. This information would be useful for procedures such as colonoscopy. The aim of this study was to investigate the length of the large intestine and its component parts in New Zealand children. Archival deidentified pediatric supine abdominopelvic computed tomography (CT) scans were retrospectively analyzed. After exclusion criteria, a total of 112 scans (57 males and 55 females) were included in the study and divided into three age groups: 0-2 years (n = 33), 4-6 years (n = 40), and 9-11 years of age (n = 39). The length of the large bowel increased from a mean of 52 cm in children aged <2 years to 73 cm at 4-6 years and 95 cm at 9-11 years. In all age groups, the transverse colon was the longest segment, contributing ∼30% of the total length of the large bowel. In comparison to total large bowel length, the mean proportional length of the rectum (9-12%), sigmoid colon (23-27%), descending colon (19-22%), transverse colon (27-32%), and ascending colon (14-17%) varied little between the three age groups. There were no significant differences between males and females in all age groups. The cecum was located in the right upper quadrant in 27% of children aged 0-2 years but in the right lower quadrant in all 9-11 year olds. These data provide useful information on the length of the large intestine and its component parts in living children, which are particularly relevant to pediatric colonoscopy and surgery. Clin. Anat. 30:887-893, 2017. © 2017 Wiley Periodicals, Inc.

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“…It has been shown how to accurately match findings at CT colonography with those of optical colonoscopy [118–120]. This has generally been done by mapping the length of the central path along the colon lumen to the polyp from CT colonography to optical colonoscopy.…”

Section: Bowelmentioning

confidence: 99%

Progress in Fully Automated Abdominal CT Interpretation

Summers

2016

American Journal of Roentgenology

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OBJECTIVE Automated analysis of abdominal CT has advanced markedly over just the last few years. Fully automated assessment of organs, lymph nodes, adipose tissue, muscle, bowel, spine, and tumors are some examples where tremendous progress has been made. Computer-aided detection of lesions has also improved dramatically. CONCLUSION This article reviews the progress and provides insights into what is in store in the near future for automated analysis for abdominal CT, ultimately leading to fully automated interpretation.

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CT Colonography Predictably Overestimates Colonic Length and Distance to Polyps Compared With Optical Colonoscopy

Cited by 22 publications

References 20 publications

Assessment of colorectal length using the electromagnetic capsule tracking system: a comparative validation study in healthy subjects

Assessment of colorectal length using the electromagnetic capsule tracking system: a comparative validation study in healthy subjects

The length of the large intestine in children determined by computed tomography scan

Progress in Fully Automated Abdominal CT Interpretation

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