Automated teniae coli detection and identification on computed tomographic colonography

Wei, Zhuoshi; Yao, Jianhua; Wang, Shijun; Liu, Shiyuan; Summers, Ronald M.

doi:10.1118/1.3679013

Cited by 6 publications

(3 citation statements)

References 35 publications

(76 reference statements)

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“…We were not able to distinguish mesenteric from omental fat, which might shed light on the paracrine mechanism. On CT scans, there is no clear delineation between the mesenteric and omental fat, although it may be possible in the future to estimate the contributions of each based on the locations of the tenia coli and marginal artery .…”

Section: Discussionmentioning

confidence: 99%

Associations among pericolonic fat, visceral fat, and colorectal polyps on CT colonography

Liu

Pattanaik

Yao

et al. 2014

Obesity

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OBJECTIVE To determine the association between pericolonic fat and colorectal polyps using CT colonography (CTC). METHODS 1169 patients who underwent CTC and same day optical colonoscopy were assessed. Pericolonic fat was measured on CTC in a band surrounding the colon. Visceral adipose tissue volume was measured at the L2-L3 levels. Student t-tests, odds ratio, logistic regression, binomial statistics and weighted-kappa were performed to ascertain associations with the incidence of colorectal polyps. RESULTS Pericolonic fat volume fractions (PFVF) were 61.5±11.0% versus 58.1±11.5%, 61.6 ±11.1% versus 58.7±11.5%, and 62.4±10.6% versus 58.8±11.5% for patients with and without any polyps, adenomatous polyps, and hyperplastic polyps, respectively (p<0.0001). Similar trends were observed when examining visceral fat volume fractions (VFVF). When patients were ordered by quintiles of PFVF or VFVF, there were 2.49, 2.19 and 2.39-fold increases in odds ratio for the presence of any polyp, adenomatous polyps, or hyperplastic polyps from the first to the fifth quintile for PFVF, and 1.92, 2.00 and 1.71-fold increases in odds ratio for VFVF. Polyps tended to occur more commonly in parts of the colon that had more PFVF than the spatially-adjusted average for patients in the highest quintile of VFVF. CONCLUSION Pericolonic fat accumulations, like visceral fat, are correlated with an increased risk of adenomatous and hyperplastic polyps.

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Section: Discussionmentioning

confidence: 99%

Associations among pericolonic fat, visceral fat, and colorectal polyps on CT colonography

Liu

Pattanaik

Yao

et al. 2014

Obesity

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“…Teniae coli detection was performed using a previously described automated method [35, 36]. The teniae were detected on 2D height map images in which the elevation of the colon surface is projected onto an unfolded flattened representation of the colon.…”

Section: Methodsmentioning

confidence: 99%

“…By identification of the haustral fold sections, the teniae coli can be detected. The method has been validated and shown to be highly accurate [36]. However, in this dataset, minor (< 10% of total colon length) manual corrections to the teniae path were required in four of the 15 scans, particularly in areas of high curvature such as at the flexures.…”

Section: Methodsmentioning

confidence: 99%

Feasibility of Using the Marginal Blood Vessels as Reference Landmarks for CT Colonography

Wei

Yao

Wang

et al. 2014

American Journal of Roentgenology

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OBJECTIVE The purpose of this study was to show the spatial relationship of the colonic marginal blood vessels and the teniae coli on CT colonography (CTC) and the use of the marginal blood vessels for supine-prone registration of polyps and for determination of proper connectivity of collapsed colonic segments. MATERIALS AND METHODS We manually labeled the marginal blood vessels on 15 CTC examinations. Colon segmentation, centerline extraction, teniae detection, and teniae identification were automatically performed. For assessment of their spatial relationships, the distances from the marginal blood vessels to the three teniae coli and to the colon were measured. Student t tests (paired, two-tailed) were performed to evaluate the differences among these distances. To evaluate the reliability of the marginal vessels as reference points for polyp correlation, we analyzed 20 polyps from 20 additional patients who underwent supine and prone CTC. The average difference of the circumferential polyp position on the supine and prone scans was computed. Student t tests (paired, two-tailed) were performed to evaluate the supine-prone differences of the distance. We performed a study on 10 CTC studies from 10 patients with collapsed colonic segments by manually tracing the marginal blood vessels near the collapsed regions to resolve the ambiguity of the colon path. RESULTS The average distances (± SD) from the marginal blood vessels to the tenia mesocolica, tenia omentalis, and tenia libera were 20.1 ± 3.1 mm (95% CI, 18.5–21.6 mm), 39.5 ± 4.8 mm (37.1–42.0 mm), and 36.9 ± 4.2 mm (34.8–39.1 mm), respectively. Pairwise comparison showed that these distances to the tenia libera and tenia omentalis were significantly different from the distance to the tenia mesocolica (p < 0.001). The average distance from the marginal blood vessels to the colon wall was 15.3 ± 2.0 mm (14.2–16.3 mm). For polyp localization, the average difference of the circumferential polyp position on the supine and prone scans was 9.6 ± 9.4 mm (5.5–13.7 mm) (p = 0.15) and expressed as a percentage of the colon circumference was 3.1% ± 2.0% (2.3–4.0%) (p = 0.83). We were able to trace the marginal blood vessels for 10 collapsed colonic segments and determine the paths of the colon in these regions. CONCLUSION The marginal blood vessels run parallel to the colon in proximity to the tenia mesocolica and enable accurate supine-prone registration of polyps and localization of the colon path in areas of collapse. Thus, the marginal blood vessels may be used as reference landmarks complementary to the colon centerline and teniae coli.

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Is it possible to give a single definition of the rectosigmoid junction?

et al. 2017

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Automated teniae coli detection and identification on computed tomographic colonography

Cited by 6 publications

References 35 publications

Associations among pericolonic fat, visceral fat, and colorectal polyps on CT colonography

Associations among pericolonic fat, visceral fat, and colorectal polyps on CT colonography

Feasibility of Using the Marginal Blood Vessels as Reference Landmarks for CT Colonography

Is it possible to give a single definition of the rectosigmoid junction?

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