Objective volumetric comparison of room air versus carbon dioxide for colonic distention at screening CT colonography

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• 作者：James L. Patrick ; Joshua R. Bakke ; Peter Bannas ; David H. Kim…
• 关键词：CT colonography ; Virtual colonoscopy ; Colorectal cancer ; Quality assurance ; Screening ; Distention
• 刊名：Abdominal Imaging
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：40
• 期：2
• 页码：231-236
• 全文大小：945 KB
• 参考文献：1. Pickhardt PJ, Kim DH (2010) / CT colonography: principles and practice of virtual colonoscopy. Philadelphia: Saunders
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• 刊物类别：Medicine
• 刊物主题：Medicine & Public Health
  Imaging and Radiology
  Gastroenterology
  Hepatology
  
• 出版者：Springer New York
• ISSN：1432-0509

文摘

Purpose To objectively compare colonic distention at CT colonography (CTC) achieved with manual room air vs. automated low-pressure carbon dioxide (CO2) using a novel automated volumetric quality assessment tool. Methods Volumetric analysis was retrospectively performed on CTC studies in 300 asymptomatic adults using an automated quality assessment tool (V3D Colon [beta version], Viatronix). Colonic distention was achieved with room air self-administered to tolerance via hand-held pump (mean number of pumps, 39?±?32) in 150 individuals (mean age, 59?years; 98 men, 51 women) and via continuous low-pressure automated infusion of CO2 in 150 individuals (mean age, 57?years; 89 men, 61 women). CTC studies in supine and prone position were assessed to determine total colonic volume (luminal gas and fluid). The colonic length along the automated centerline was also recorded to enable calculation of length-adjusted colonic volumes. Results The mean total colonic volume (±SD) for individuals receiving room air and CO2 distention was 1809?±?514 and 2223?±?686?mL, respectively (p?2 cases (p?2 cases were above this cut-off. The mean length-adjusted colonic volume (mL/cm) for the room air and CO2 techniques was 9.9?±?2.4 and 11.6?±?2.6?mL/cm (p? Conclusions Using automated volumetry allowed quantitative analyses of colonic volumes and objectively confirmed that continuous low-pressure CO2 provides greater overall colonic distention than the manual room air technique at CTC. The supine position demonstrated better distention with CO2, whereas the prone position was better distended with the room air technique.