Computed tomography of urinary calculi.

Journal Article (Journal Article)

Computed tomography (CT) was used in the evaluation of nine patients with nonopaque calculi in the upper urinary tract. In each case the calculus was identified as a very high density object (370-586 Hounsfield units) with calcium oxalate and cystine stones having somewhat higher attenuation values than uric acid or xanthine stones. The differentiation between calculi and other "radiolucent" filling defects was readily made since calculi had much higher attenuation values than blood clot or neoplasm. CT of the upper urinary tract may obviate the need for more invasive procedures such as retrograde pyelography when nonopaque filling defects require differentiation.

Full Text

Duke Authors

Cited Authors

  • Federle, MP; McAninch, JW; Kaiser, JA; Goodman, PC; Roberts, J; Mall, JC

Published Date

  • February 1, 1981

Published In

Volume / Issue

  • 136 / 2

Start / End Page

  • 255 - 258

PubMed ID

  • 6781243

International Standard Serial Number (ISSN)

  • 0361-803X

Digital Object Identifier (DOI)

  • 10.2214/ajr.136.2.255


  • eng

Conference Location

  • United States