Faculty Collaboration Database

Lower extremity deep venous thrombosis: evaluation with ferumoxytol-enhanced MR imaging and dual-contrast mechanism--preliminary experience. Radiology 2007 Mar;242(3):873-81

Date

02/28/2007

Pubmed ID

17325072

DOI

10.1148/radiol.2423052101

Scopus ID

2-s2.0-33847175868 (requires institutional sign-in at Scopus site)   45 Citations

Abstract

Institutional review board approval and informed consent were obtained for this HIPAA-compliant study, whose purpose was to prospectively evaluate the use of a dual-contrast mechanism in conjunction with an iron oxide blood pool contrast agent, ferumoxytol, to depict deep venous thrombosis (DVT). Nine patients with lower extremity DVT detected with duplex ultrasonography (US) were imaged with magnetic resonance (MR) imaging and ferumoxytol. Three techniques, including precontrast two-dimensional time-of-flight (TOF) imaging, ferumoxytol-enhanced bright-blood imaging, and ferumoxytol-enhanced dark-blood imaging, were applied. Image quality for precontrast and ferumoxytol-enhanced images was analyzed by using a four-point scale. Thrombus was depicted as a filling defect within the blood pool on bright-blood images and as bright tissue that appeared highly contrasted against a dark background on dark-blood images. Image quality of ferumoxytol-enhanced images was uniformly superior to that of precontrast TOF images (P = .007). Compared with precontrast TOF images, ferumoxytol-enhanced bright-blood images had higher contrast-to-noise ratios (CNRs) between thrombus and blood (P = .051), whereas ferumoxytol-enhanced dark-blood images showed significantly higher CNRs between thrombus and surrounding muscle (P = .008). Ferumoxytol-enhanced MR imaging can depict DVT with a dual-contrast mechanism and show the extent of thrombus.

Author List

Li W, Salanitri J, Tutton S, Dunkle EE, Schneider JR, Caprini JA, Pierchala LN, Jacobs PM, Edelman RR

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Aged, 80 and over
Contrast Media
Female
Ferrosoferric Oxide
Humans
Image Enhancement
Leg
Magnetic Resonance Imaging
Male
Middle Aged
Pilot Projects
Reproducibility of Results
Sensitivity and Specificity
Venous Thrombosis