Skip Navigation LinksHome > November/December 2013 - Volume 37 - Issue 6 > Diagnostic Value of Diffusion-Weighted Magnetic Resonance Im...
Journal of Computer Assisted Tomography:
doi: 10.1097/RCT.0b013e31828bea16
Diffusion-Weighted MR Imaging

Diagnostic Value of Diffusion-Weighted Magnetic Resonance Imaging in Pelvic Abscesses

Nguyen, Truong Luong Francis MD*; Soyer, Philippe MD, PhD; Barbe, Coralie MD; Graesslin, Olivier MD, PhD§; Veron, Sophie MD*; Amzallag-Bellenger, Elisa MD*; Tomas, Catherine MD*; Hoeffel, Christine MD, PhD*

Collapse Box

Abstract

Objective: The objective of this study was to prospectively assess the added value of gadolinium-enhanced and diffusion-weighted (DWI) magnetic resonance imaging (MRI) to pelvic T2-weighted MRI for diagnosis of deep pelvic abscesses.

Methods: Twenty-nine patients with suspected abscess and a control group of 43 patients underwent T2-weighted, gadolinium-enhanced, T1-weighted and DWI magnetic resonance sequences. Three readers (R1, R2, R3) scored likelihood of abscess on standard MRI, standard MRI + gadolinium, and standard MRI + DWI.

Results: Twenty-nine patients had 36 abscesses. On standard MRI, R1 achieved area under the receiver operating characteristic (ROC) curve (AUC) of 0.97, sensitivity 92%, and specificity 100%. For R2, these figures were 0.87, 81%, and 100%, and for R3, these were 0.85, 83%, and 79%. After gadolinium, R2 improved AUC to 0.97 (P = 0.005), and R3 to 0.95 (P = 0.006). Standard MRI + DWI yielded improved AUC for all readers (P = 0.15, 0.001, and 0.001 for R1, R2, R3, respectively).

Conclusions: Addition of gadolinium or DWI to T2-weighted MRI improves performances for the diagnosis of deep pelvic abscess. Diffusion-weighted imaging may replace gadolinium.

© 2013 by Lippincott Williams & Wilkins

  

Login

Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.