Feasibility of blood oxygenation level-dependent MR imaging to monitor hepatic transcatheter arterial embolization in rabbits

Thomas K. Rhee, Andrew C. Larson, Pottumarthi V. Prasad, Elizabette Santos, Kent T. Sato, Riad Salem, Jie Deng, Tatjana Paunesku, Gayle E. Woloschak, Mary F. Mulcahy, Debiao Li, Reed A. Omary*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Blood oxygenation level-dependent (BOLD) magnetic resonance (MR) imaging is a noninvasive method to assess changes in oxygen delivery to tissues. It was hypothesized that BOLD MR imaging can detect changes in rabbit VX2 liver tumor oxygenation after hepatic artery embolization with polyvinyl alcohol particles. In four discrete VX2 liver tumors, a statistically significant mean reduction in apparent transverse relaxation time was shown, from 55 milli-seconds before embolization to 41 milliseconds after embolization (P < .01). This reduction corresponded to a decrease in hepatic tumor oxygenation. The use of BOLD MR imaging to monitor changes in hepatic tumor oxygenation after embolization is feasible. These functional MR imaging measurements of hypoxia may be targeted as an endpoint for therapy in future studies.

Original languageEnglish (US)
Pages (from-to)1523-1528
Number of pages6
JournalJournal of Vascular and Interventional Radiology
Volume16
Issue number11
DOIs
StatePublished - Nov 2005

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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