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Carotid-CNS MR flow imaging.

T J Masaryk1, G A Laub, M T Modic

  • 1Department of Radiology, University Hospitals of Cleveland/Case Western Reserve University, Ohio 44106.

Magnetic Resonance in Medicine
|May 1, 1990
PubMed
Summary
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Three-dimensional fast-Fourier transform (3DFT) time-of-flight MR angiography is effective for evaluating head and neck vascular diseases. This technique, combined with spin-echo imaging, aids in diagnosing carotid bifurcation atherosclerosis and intracranial arterial occlusions.

Area of Science:

  • Medical Imaging
  • Radiology
  • Neurovascular Imaging

Background:

  • Vascular diseases of the head and neck require accurate diagnostic tools.
  • Magnetic Resonance (MR) angiography offers non-invasive visualization of blood vessels.

Purpose of the Study:

  • To evaluate the 1-year experience with 3D fast-Fourier transform (3DFT), time-of-flight MR angiography for head and neck vascular diseases.
  • To assess the utility and limitations of this MR angiography technique.

Main Methods:

  • Utilized 3DFT time-of-flight MR angiography in over 150 patients.
  • Combined MR angiography with standard spin-echo imaging.
  • Assessed applicability to various cerebrovascular conditions.

Main Results:

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  • Minimal increase in examination time when combined with spin-echo imaging.
  • Effective for carotid bifurcation atherosclerosis, intracranial arterial occlusions (especially in pediatric patients), and saccular berry aneurysms.
  • Limited utility for arteriovenous fistulae, neoplasms, and giant intracranial aneurysms due to slow or high flow states.

Conclusions:

  • 3DFT time-of-flight MR angiography is a valuable adjunct to standard MR imaging for specific head and neck vascular pathologies.
  • The technique's limitations include poor visualization of slow or high flow lesions.