The International Journal of Cardiovascular Imaging

, Volume 26, Issue 6, pp 683–691

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

Authors

    • Applied Imaging Science Laboratory, Department of RadiologyBrigham and Women’s Hospital
  • Dimitrios Mitsouras
    • Applied Imaging Science Laboratory, Department of RadiologyBrigham and Women’s Hospital
  • Christopher D. Owens
    • Department of SurgeryBrigham and Women’s Hospital
    • Division of Vascular and Endovascular SurgeryUniversity of California
  • Amanda Whitmore
    • Applied Imaging Science Laboratory, Department of RadiologyBrigham and Women’s Hospital
  • Marie Gerhard-Herman
    • Division of MedicineBrigham and Women’s Hospital
  • Nichole Wake
    • Division of MedicineBrigham and Women’s Hospital
  • Tianxi Cai
    • Department of BiostatisticsHarvard School of Public Health
  • Qian Zhou
    • Department of BiostatisticsHarvard School of Public Health
  • Michael S. Conte
    • Department of SurgeryBrigham and Women’s Hospital
    • Division of Vascular and Endovascular SurgeryUniversity of California
  • Mark A. Creager
    • Division of MedicineBrigham and Women’s Hospital
  • Robert V. Mulkern
    • Department of RadiologyChildren’s Hospital Boston
Original Paper

DOI: 10.1007/s10554-010-9621-4

Cite this article as:
Rybicki, F.J., Mitsouras, D., Owens, C.D. et al. Int J Cardiovasc Imaging (2010) 26: 683. doi:10.1007/s10554-010-9621-4

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.

Keywords

Magnetic resonance imagingVein bypass graftsRemodelingPeripheral vascular disease

Copyright information

© Springer Science+Business Media, B.V. 2010