Kidney changes after extracorporeal shock wave lithotripsy: appearance on MR imaging.

Journal Article (Journal Article)

The occurrence of changes in the kidneys after extracorporeal shock wave lithotripsy (ESWL) was evaluated with magnetic resonance (MR) imaging in 34 patients, utilizing T1-weighted spin-echo pulse sequences. Five of the 34 patients underwent bilateral ESWL therapy before MR imaging. Of the 39 kidneys studied, 29 (74%) showed one or more changes on MR imaging: subcapsular or perinephric fluid (n = 10), focal (n = 16) or diffuse (n = 8) loss of the corticomedullary junction (CMJ), and focal areas of increased (n = 7) or decreased (n = 3) signal intensity. The CMJ changes were more prominent with increasing numbers of shock waves administered during the procedure. These relatively subtle changes detected on MR imaging may not be apparent with other imaging techniques. The long-term clinical significance of these findings is not yet known, although no apparent serious renal pathologic condition was detected.

Full Text

Duke Authors

Cited Authors

  • Baumgartner, BR; Dickey, KW; Ambrose, SS; Walton, KN; Nelson, RC; Bernardino, ME

Published Date

  • May 1987

Published In

Volume / Issue

  • 163 / 2

Start / End Page

  • 531 - 534

PubMed ID

  • 3562837

International Standard Serial Number (ISSN)

  • 0033-8419

Digital Object Identifier (DOI)

  • 10.1148/radiology.163.2.3562837


  • eng

Conference Location

  • United States