Correlation of perfusion abnormalities on CTAP and immediate postintravenous gadolinium-enhanced gradient echo MRI |
| |
| Authors: | J F Schlund R C Semelka U Kettritz S M Weeks M Kahlenberg W G Cance |
| |
| Institution: | (1) Department of Radiology, University of North Carolina, Chapel Hill, NC 27599, USA, US;(2) Department of Surgery, University of North Carolina, Chapel Hill, NC 27599, USA, US |
| |
| Abstract: | Background: The purpose of this study was to evaluate patients with wedge-shaped perfusion defects seen on spiral CT arterial portography
for the presence of transient increased wedge-shaped enhancement on dynamic gadolinium-enhanced gradient echo MR images.
Methods: Nineteen patients underwent CTAP and MRI within a 2-week interval. All patients with wedge-shaped perfusion defects on CT
arterial portography were evaluated in a separate review session for the presence of transient increased segmental hepatic
enhancement on dynamic gadolinium-enhanced spoiled gradient echo (SGE) MR images.
Results: Eight patients were identified to have subsegmental, segmental, or lobar wedge-shaped perfusion defects by CT arterial portography.
In 8/8 patients, there was transient wedge-shaped increased hepatic enhancement on MR images which corresponded to the perfusion
defects identified on CT arterial portography. Transient increased enhancement on MR images was observed on immediate postgadolinium
images as high-signal intensity of the involved subsegment, segment, or lobe. This relatively high-signal area faded to near
isointensity in all cases on images obtained at 45 s.
Conclusion: Wedge-shaped perfusion defects demonstrated by CT arterial portography corresponded to wedge-shaped increased hepatic enhancement
following gadolinium administration on SGE MR images.
Received: 29 December 1994/Accepted: 7 February 1995 |
| |
| Keywords: | : CT arterial portography< +> — < +> Gadolinium< +> — < +> Liver MR 761 1213< +> — < +> Magnetic resonance (MR) rapid imaging |
| 本文献已被 SpringerLink 等数据库收录！ |
|
