Hepatic dynamic sequential CT: section enhancement profiles with a bolus of ionic and nonionic contrast agents.

Published

Journal Article

The enhancement characteristics in different portions of the liver during dynamic sequential bolus computed tomography (CT) with iodinated contrast material (DSBCT) were prospectively evaluated in 75 patients by using iothalamate meglumine, iopamidol, and iohexol (25 patients received each agent). After baseline noncontrast CT was performed, DSBCT was performed with a 180-mL intravenous bolus administered at 2 mL/sec. Scanning was started 25 seconds after the bolus was initiated, by using a 3-second scan time and rapid cephalocaudal table incrementation, yielding contiguous 8-mm-thick sections at a rate of nine sections per minute. On postcontrast images, peak enhancement was 115% for iopamidol and 117% for iohexol, both of which were superior to iothalamate meglumine at 95% (P less than .05). After peaking, enhancement then decreased for all three contrast agents, although the decline was more precipitous for iothalamate meglumine. Enhancement on the more caudal sections with both iopamidol and iohexol was superior to that with iothalamate meglumine (P less than .05). The data suggest that the enhancement characteristics for the two nonionic agents may be more optimal for detection of focal hepatic lesions than the ionic agent.

Full Text

Duke Authors

Cited Authors

  • Nelson, RC; Moyers, JH; Chezmar, JL; Hoel, MJ; Jones, EC; Peterson, JE; Cork, RD; Bernardino, ME

Published Date

  • February 1991

Published In

Volume / Issue

  • 178 / 2

Start / End Page

  • 499 - 502

PubMed ID

  • 1987614

Pubmed Central ID

  • 1987614

International Standard Serial Number (ISSN)

  • 0033-8419

Digital Object Identifier (DOI)

  • 10.1148/radiology.178.2.1987614

Language

  • eng

Conference Location

  • United States