Multi-contrast high spatial resolution black blood inner volume three-dimensional fast spin echo MR imaging in peripheral vein bypass grafts

Frank J. Rybicki, Dimitrios Mitsouras, Christopher D. Owens, Amanda Whitmore, Marie Gerhard-Herman, Nichole Wake, Tianxi Cai, Qian Zhou, Michael S. Conte, Mark A. Creager, Robert V. Mulkern

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The purpose of this study is to primarily evaluate the lumen area and secondarily evaluate wall area measurements of in vivo lower extremity peripheral vein bypass grafts patients using high spatial resolution, limited field of view, cardiac gated, black blood inner volume three-dimensional fast spin echo MRI. Fifteen LE-PVBG patients prospectively underwent ultrasound followed by T1-weighted and T2-weighted magnetic resonance (MR) imaging. Lumen and vessel wall areas were measured by direct planimetry. For graft lumen areas, T1-and T2-weighted measurements were compared with ultrasound. For vessel wall areas, differences between T1-and T2-weighted measurements were evaluated. There was no significant difference between ultrasound and MR lumen measurements, reflecting minimal MR blood suppression artifact. Graft wall area measured from T1-weighted images was significantly larger than that measured from T2-weighted images (P < 0.001). The mean of the ratio of T1-versus T2-weighted vessel wall areas was 1.59 (95% CI: 1.48-1.69). The larger wall area measured on T1-weighted images was due to a significantly larger outer vessel wall boundary. Very high spatial resolution LE-PVBG vessel wall MR imaging can be performed in vivo, enabling accurate measurements of lumen and vessel wall areas and discerning differences in those measures between different tissue contrast weightings. Vessel wall area differences suggest that LE-PVBG vessel wall tissues produce distinct signal characteristics under T1 and T2 MR contrast weightings.

Original languageEnglish (US)
Pages (from-to)683-691
Number of pages9
JournalInternational Journal of Cardiovascular Imaging
Volume26
Issue number6
DOIs
StatePublished - Aug 1 2010
Externally publishedYes

Keywords

  • Magnetic resonance imaging
  • Peripheral vascular disease
  • Remodeling
  • Vein bypass grafts

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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