Modified PROPELLER approach for T2-mapping of the abdomen

Jie Deng, Andrew C. Larson

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Quantitative abdominal T2 measurements may be useful for lesion differentiation and functional tissue characterization. However, T2 mapping of the abdomen with conventional spin-echo (SE) and turbo-spin-echo (TSE) approaches can be challenging due to physiologic motion artifacts. Multishot TSE-based PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction) can provide superior image quality due to reduced sensitivity to motion artifacts. With echo-reordering to accurately estimate effective echo times and an extended slice thickness ratio to reduce stimulated echo effects, a modified PROPELLER approach may permit accurate, robust abdominal T2 measurements. We validated the accuracy of our modified PROPELLER T2-mapping approach by comparison to conventional SE measurements in a phantom model and demonstrated the feasibility of acquiring accurate, high-quality abdominal T2 maps in normal volunteers.

Original languageEnglish (US)
Pages (from-to)1269-1278
Number of pages10
JournalMagnetic resonance in medicine
Volume61
Issue number6
DOIs
StatePublished - Jun 2009
Externally publishedYes

Keywords

  • Abdomen
  • PROPELLER
  • T relaxometry

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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