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Oral Iohexol for Fecal/Fluid Tagging for CT Colonography: A Study to Improve Image Quality by Preventing Colonic Bubbles

ABSTRACT: To determine whether colonic bubbles associated with CT colonography performed with iohexol for fecal/fluid tagging could be reduced by adding simethicone to the standard cathartic preparation.

DISEASE(S): Colorectal Neoplasms

PROVIDER: 2139959 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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MR Colonography With Fecal Tagging. Barium vs. BariumFerumoxsil

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Magnetic Resonance (MR) Colonography With Fecal Tagging

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Human fetal chylothorax: pleural fluid vs. ascites fluid

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2012-12-31 | E-GEOD-33872 | biostudies-arrayexpress

Ruminal fluid

Project description:Ruminal fluid Raw sequence reads

| PRJNA732599 | ENA

Rumen fluid

Project description:Rumen fluid Raw sequence reads

| PRJNA791830 | ENA

Ruminal fluid

Project description:Ruminal fluid Raw sequence reads

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Rumen Fluid

Project description:Rumen Fluid Raw sequence reads

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Increasing Navigation Speed at Endoluminal CT Colonography Reduces Colonic Visualization and Polyp Identification.

Project description:Purpose To investigate the effect of increasing navigation speed on the visual search and decision making during polyp identification for computed tomography (CT) colonography Materials and Methods Institutional review board permission was obtained to use deidentified CT colonography data for this prospective reader study. After obtaining informed consent from the readers, 12 CT colonography fly-through examinations that depicted eight polyps were presented at four different fixed navigation speeds to 23 radiologists. Speeds ranged from 1 cm/sec to 4.5 cm/sec. Gaze position was tracked by using an infrared eye tracker, and readers indicated that they saw a polyp by clicking a mouse. Patterns of searching and decision making by speed were investigated graphically and by multilevel modeling. Results Readers identified polyps correctly in 56 of 77 (72.7%) of viewings at the slowest speed but in only 137 of 225 (60.9%) of viewings at the fastest speed (P = .004). They also identified fewer false-positive features at faster speeds (42 of 115; 36.5%) of videos at slowest speed, 89 of 345 (25.8%) at fastest, P = .02). Gaze location was highly concentrated toward the central quarter of the screen area at faster speeds (mean gaze points at slowest speed vs fastest speed, 86% vs 97%, respectively). Conclusion Faster navigation speed at endoluminal CT colonography led to progressive restriction of visual search patterns. Greater speed also reduced both true-positive and false-positive colorectal polyp identification. © RSNA, 2017 Online supplemental material is available for this article.

| S-EPMC5548448 | biostudies-literature

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