title: Positive and negative oral contrast agents for combined abdominal and pelvic helical CT: first iodinated agent and second water.
abstract: Combined abdominal and pelvic helical computed tomography (CT) with intravenous contrast media was performed on 19 patients with 400 mL of diluted iodine solution 60 minutes before and 400 mL of water just before CT. The distal small bowel was opacified by the positive contrast agent, and the stomach by the negative contrast agent in all patients. The gastric contents were homogenous, and the density was a mean +/- standard deviation 2.5+/-7.3 HU. The difference between the densities of the gastric contents and of the gastric wall (mean +/- s.d. 80.8+/-20.9 HU) was statistically significant (p<.05). There were no pseudotumors. Thus our protocol, first diluted iodine solution and second water, can be used as a method for the oral administration of contrast agents for combined abdominal and pelvic helical CT with intravenous contrast media.
authors.affiliation: Department of Radiology, Toshiba General Hospital, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Matsuoka
authors.forename: T
authors.initials: T
authors.lastname: Masumoto
authors.forename: H
authors.initials: H
authors.lastname: Koga
authors.forename: K
authors.initials: K
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Ushimi
authors.forename: H
authors.initials: H
authors.lastname: Terada
authors.forename: A
authors.initials: A
authors.lastname: Tamura
authors.forename: Y
authors.initials: Y
authors.lastname: Yokoyama
authors.forename: K
authors.initials: K
authors.lastname: Abe
authors.forename: N
authors.initials: N
authors.lastname: Kamata
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media / Q000008:administration & dosage*; D003974:Diatrizoate Meglumine / Q000008:administration & dosage; D005260:Female; D006801:Humans; D007262:Infusions, Intravenous; D007479:Iopamidol; D008297:Male; D008875:Middle Aged; D010388:Pelvis / Q000000981:diagnostic imaging*; D011860:Radiography, Abdominal; D014057:Tomography, X-Ray Computed; D014867:Water / Q000008:administration & dosage
chemical_list: D003287:Contrast Media; D014867:Water; D003974:Diatrizoate Meglumine; D007479:Iopamidol