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Eligibility
for people ages 18 years and up
Location
at San Francisco, California
Dates
study started
Principal Investigator
Benjamin M. Yeh

Description

Summary

Although positive oral contrast agents are used for the majority of abdominopelvic CT scans in the United States, the quality of bowel opacification has not been compared between the three major classes of positive oral contrast material (barium sulfate, ionic iodinated contrast material, and non-ionic iodinate contrast material). This is a retrospective single institution study of clinical records to show whether the uniformity of bowel opacification is different between the three main types of positive CT oral contrast material used in the United States (Barium sulfate, Diatrizoate, and Iohexol). The investigators will retrospectively identify 250 patients each who received oral barium sulfate, diatrizoate, and iohexol for CT scanning of the abdomen and pelvis (total 750 patients) and assess the quality of bowel lumen opacification by the positive oral contrast agents.

Details

Although positive oral contrast agents are used for the majority of abdominopelvic CT scans in the United States, the quality of bowel opacification has not been compared between the three major classes of positive oral contrast material (barium sulfate, ionic iodinated contrast material, and non-ionic iodinate contrast material). The investigators will retrospectively identify 250 patients each who received oral barium sulfate, diatrizoate, and iohexol for CT scanning of the abdomen and pelvis (total 750 patients) and assess the quality of bowel lumen opacification by the positive oral contrast agents.

Primary objective:

  • To show the uniformity of bowel opacification is different between the three main types of CT oral contrast material used in the United States (Barium sulfate, Diatrizoate, and Iohexol).

Secondary objectives:

  • To show whether or not one of the oral contrast agents provides more uniform opacification than the others in the proximal or distal bowel
  • To assess the relative opacification of the distal small bowel (ileum) by the three contrast agents.

Keywords

Known or Suspected Abdominal Disease

Eligibility

You can join if…

Open to people ages 18 years and up

  • CT scans in which oral contrast material was given

You CAN'T join if...

  • CT scans in which an obvious paucity of oral contrast material is seen,
  • CT scans of patients who had studies within 1 week prior where enteric contrast may have been given, including fluoroscopic, endoscopic, or interventional studies

Location

Details

Status
accepting new patients
Start Date
Sponsor
University of California, San Francisco
ID
NCT02542046
Phase
Phase 3
Lead Scientist
Benjamin M. Yeh
Study Type
Interventional
Last Updated
September 2015
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