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MR Angiography: comparison of time-of-flight, phase-contrast and digital substraction angiography

  • K. E. W. Eberhardt
  • H. P. Hollenbach
  • U. Böttcher
  • W. J. Huk
Conference paper

Abstract

We compared two MR angiography (MRA) techniques, time-of-flight (TOF) and phase-contrast (PC), with digital substraction angiography (DSA), in relation to operative findings in 40 patients with cerebrovascular disease. The investigations were performed using a 1.5 T whole-body system. 2D- and 3D-TOF and 2D- and 3D PC sequences were used in sagittal and axial planes. Velocity-encoding of the PC sequence varied between 5 and 100 cm/ s, depending on the blood flow velocity. The 3D data-sets were analysed using a maximum intensity projection program. The sensitivity of TOF and PC is comparable with that of DSA in the diagnosis of venous thrombosis. MRA may be superior to DSA in patients with giant aneurysms.

Key words

Magnetic resonance imaging MR angiography Time-of-flight, phase contrast Digital substraction angiography 

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References

  1. 1.
    Modic MT, Masaryk TJ, Tkach TA; Ruggieri PM, Dillinger JJ, Ross JS (1993) Three-dimensional time of flight angiography with a specialized gradient head coil. J Magn Reson Imag 3: 365–375.CrossRefGoogle Scholar
  2. 2.
    Edelman RR (1992) Basic principles of magnetic resonance angiography. Cardiovasc Intervent Radiol 15: 3–13.PubMedGoogle Scholar
  3. 3.
    Edelman RR, Ahn SS, Chien D, Li W, Goldman A, Mantello M, Kramer J, Kleefield J (1992) Improved time of flight MR angiography of the brain. Radiology 184: 395–399.PubMedGoogle Scholar
  4. 4.
    Smith MA (1990) The measurement and visualization of blood vessel flow. Clin Phys Physiol Meas 11: 101–123.PubMedCrossRefGoogle Scholar
  5. 5.
    Turski PA, Grist T (1993) Flow quantification extends MR’s neuroapplications. Diagn Imag 15(5): 68–77.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1995

Authors and Affiliations

  • K. E. W. Eberhardt
    • 1
  • H. P. Hollenbach
    • 2
  • U. Böttcher
    • 2
  • W. J. Huk
    • 1
  1. 1.Division of Neuroradiology, Department of NeurosurgeryUniversity of ErlangenErlangenGermany
  2. 2.Siemens Medical Engineering GroupErlangenGermany

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