Irritable bowel syndrome evaluation using computed tomography colonography

Ohgo, Hideki; Imaeda, Hiroyuki; Yamaoka, Minoru; Yoneno, Kazuaki; Hosoe, Naoki; Mizukami, Takeshi; Nakamoto, Hidetomo

doi:10.3748/wjg.v22.i42.9394

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…To our knowledge, this is the first study to show that bowel habits (defecation frequency) clearly correlate with colon length in a cohort study. A previous case–control study ( n = 51) utilizing CT colonography reported that patients with functional constipation had a significantly longer colon compared with diarrhea type IBS or control patients [ 22 ]. These results suggest that defecation frequency is associated with colon length and are consistent with the results of the present study.…”

Section: Discussionmentioning

confidence: 99%

“…So far, several researchers have measured colon length using CT colonography to identify the cause of incomplete colonoscopy [ 17 ], colon length difference compared with colonoscopy [ 18 , 19 ], positional alteration of the colon length [ 20 ] and the correlation of colon anatomy with age, gender and body mass index [ 21 ]. Ohgo et al reported that the entire colon in patients with functional constipation was significantly longer than patients with diarrhea-type irritable bowel syndrome (IBS) or control patients in a small-scale case–control study [ 22 ]. However, previous studies using CT colonography have not examined the association with gender, age, physique, a history of laparotomy and bowel habits, all possible contributory factors to colon length.…”

Section: Introductionmentioning

confidence: 99%

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Bowel habits and gender correlate with colon length measured by CT colonography

et al. 2021

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Purpose CT colonography enables three-dimensional measurement of colon length. However, previous studies using CT colonography have not examined the association with gender, age, physique, a history of laparotomy and bowel habits, all possible contributory factors to colon length. The aim of this study is to investigate factors associated with colon length. Materials and methods We conducted a post hoc analysis based on data obtained from a previous multi-center trial including 321 patients with positive fecal immunochemical tests who underwent CT colonography. Colon length was measured using a computer-generated center line and was divided at the iliac crest level into the distal and proximal colons. Bowel habits were classified into three groups: A—daily; B—once every 2 or 3 days; and C—less than once in 3 days. Statistical comparison was made using one-way ANOVA with Bonferroni’s correction. Results A total of 295 patients were analyzed. The entire colon length (cm, mean ± standard deviation) of individual patients was 150.3 ± 18.5 cm and ranged from 109.7 to 195.9 cm. The female colon was significantly longer than the male colon (154.3 ± 18.1 cm vs. 147.1 ± 18.3 cm; p = 0.022). Colon length showed trends associated with age (p = 0.18) and a history of laparotomy (p = 0.14). According to bowel habits, the entire colon measured 147.4 ± 17.9 in group A, 154.7 ± 18.5 in group B and 158.6 ± 18.3 in group C, and significant differences were observed for “A vs. C” (p = 0.002) and “A vs. B” (p = 0.014). In subgroup analysis by colon segment, the proximal colon trended similarly to the entire colon while there were no trends for the distal colon. Conclusions This study has clearly demonstrated that bowel habits and gender both correlate with the length of the entire colon measured by CT colonography, and in particular, the proximal colon. Secondary abstract Using CT colonography, we measured the colon length in 295 patients. The entire colon length was 150.3 ± 18.5 cm on average. Females and constipated (less frequent defecation) patients have a significantly longer colon, and in particular, the proximal colon. Colon length showed trends associated with age and a history of laparotomy.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bowel habits and gender correlate with colon length measured by CT colonography

et al. 2021

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“…Furthermore, region of interest (ROI) activation (such as the parietal region, prefrontal cortex, cerebellum, anterior cingulate cortex, insular cortex, and thalamus) differed significantly between the 40ml and 120-ml conditions, and between the 80-ml and 120-ml conditions (P < 0.05), among patients with IBS with anxiety or depression scores less than 9 points. 9…”

Section: Resultsmentioning

confidence: 99%

“…Ohgo, H et al (2016) 9 showed CT colonography might contribute the clarification of subtypes of IBS.…”

Section: Participantsmentioning

confidence: 99%

The Role of Radiologic Imaging in Irritable Bowel Syndrome (Ibs): A Systematic Review

Nuswantoro,

Anggraini

2024

JARMHS

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Background: The role of radiologic imaging in the investigation of irritable bowel syndrome (IBS) remains a subject of debate and there is some evidence, from recent studies of utilization of imaging in IBS, which focused on associated costs and radiation exposure, that imaging is being used relatively widely in these patients. The aim: This study aims to show the role of radiologic imaging in irritable bowel syndrome (IBS). Methods: By comparing itself to the standards set by the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) 2020, this study was able to show that it met all of the requirements. So, the experts were able to make sure that the study was as up-to-date as it was possible to be. For this search approach, publications that came out between 2013 and 2023 were taken into account. Several different online reference sources, like Pubmed and SagePub, were used to do this. It was decided not to take into account review pieces, works that had already been published, or works that were only half done. Result: In the PubMed database, the results of our search brought up 112 articles, whereas the results of our search on SagePub brought up 179 articles. The results of the search conducted for the last year of 2013 yielded a total 84 articles for PubMed and 91 articles for SagePub. The result from title screening, a total 18 articles for PubMed and 25 articles for SagePub. In the end, we compiled a total of 10 papers. We included five research that met the criteria. Conclusion: In patients presenting with IBS symptoms and alarm features, radiologic testing may be used to exclude an alternative diagnosis and the imaging modality should be chosen based on the most likely alternative diagnosis.

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“…The prior selection is based on the studies by Gilroy et al [ 41 ] and Ohgo et al [ 42 ], where the average diameter of the large intestine is reported to be

cm, with standard deviation

cm, on the interval

cm. Following the idea of drawing sample frequencies, the intestine diameter,

, is drawn from either a uniform distribution

or a truncated Gaussian distribution with

, and

.…”

Section: Resultsmentioning

confidence: 99%

Feature Point Tracking-Based Localization of Colon Capsule Endoscope

et al. 2021

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In large bowel investigations using endoscopic capsules and upon detection of significant findings, physicians require the location of those findings for a follow-up therapeutic colonoscopy. To cater to this need, we propose a model based on tracking feature points in consecutive frames of videos retrieved from colon capsule endoscopy investigations. By locally approximating the colon as a cylinder, we obtained both the displacement and the orientation of the capsule using geometrical assumptions and by setting priors on both physical properties of the intestine and the image sample frequency of the endoscopic capsule. Our proposed model tracks a colon capsule endoscope through the large intestine for different prior selections. A discussion on validating the findings in terms of intra and inter capsule and expert panel validation is provided. The performance of the model is evaluated based on the average difference in multiple reconstructed capsule’s paths through the large intestine. The path difference averaged over all videos was as low as 4±0.7 cm, with min and max error corresponding to 1.2 and 6.0 cm, respectively. The inter comparison addresses frame classification for the rectum, descending and sigmoid, splenic flexure, transverse, hepatic, and ascending, with an average accuracy of 86%.

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Irritable bowel syndrome evaluation using computed tomography colonography

Cited by 6 publications

References 23 publications

Bowel habits and gender correlate with colon length measured by CT colonography

Bowel habits and gender correlate with colon length measured by CT colonography

The Role of Radiologic Imaging in Irritable Bowel Syndrome (Ibs): A Systematic Review

Feature Point Tracking-Based Localization of Colon Capsule Endoscope

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