Contrast-enhanced, three-dimensional, whole-brain, black-blood imaging: Application to small brain metastases

Jaeseok Park, Eung Yeop Kim

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Contrast-enhanced three-dimensional T1-weighted imaging based on magnetization-prepared rapid-gradient recalled echo is widely used for detecting small brain metastases. However, since contrast materials remain in both blood and the tumor parenchyma and thus increase the signal intensity of both regions, it is often challenging to distinguish brain tumors from blood. In this work, we develop a T1-weighted, black-blood version of single-slab three-dimensional turbo/fast spin echo whole-brain imaging, in which the signal intensity of the brain tumor is selectively enhanced while that of blood is suppressed. For blood suppression, variable refocusing flip angles with flow-sensitizing gradients are employed. To avoid a signal loss resulting from the flow-sensitizing scheme, the first refocusing flip angle is forced to 180°. Composite restore pulses at the end of refocusing pulse train are applied to achieve partial inversion recovery for the T1-weighted contrast. Simulations and in vivo volunteer and patient experiments are performed, demonstrating that this approach is highly efficient in detecting small brain metastases.

Original languageEnglish
Pages (from-to)553-561
Number of pages9
JournalMagnetic Resonance in Medicine
Volume63
Issue number3
DOIs
Publication statusPublished - 2010 Mar

Keywords

  • Black blood
  • Contrast-enhanced
  • MRI
  • Magnetic resonance imaging
  • Metastatic tumor
  • Three dimensional
  • Variable flip angle

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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