Usefulness of two-dimensional time-of-flight MR angiography combined with surface anatomy scanning for convexity lesions

Neurosurg Rev. 1997;20(2):108-13. doi: 10.1007/BF01138193.


Thirty-eight patients with convexity lesions were studied prospectively with the two-dimensional time-of-flight (2D-TOF) magnetic resonance angiography (MRA) method. Of these 21 cases had additional surface anatomy scanning (SAS) and 7 cases had three-dimensional phase contrast (3D-PC) MRA. The findings were compared during surgery and the predictability of 2D-TOF evaluated. 2D-TOF was obtained with 2 mm slice thickness after the administration of contrast media for routine magnetic resonance imaging (MRI). Cortical veins were visualized with a good resolution with a scan time of only 5 minutes. The tumor was also visible in the background, due to enhancement, and thus the tumor-vessels relation was shown. Slow-flow vessels were also adequately seen. SAS was done at the same sitting with fast spin echo (FSE) with a scan time of 3 minutes. Once both images were incorporated, information on gyri and their relation to the lesions and vasculature could be obtained from a single image. We found 2D-TOF alone, or at times in combination with SAS, useful for planning of operation for convexity lesions.

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Algorithms
  • Blood Flow Velocity / physiology
  • Brain Neoplasms / blood supply*
  • Brain Neoplasms / diagnosis
  • Brain Neoplasms / secondary
  • Cerebral Veins / pathology
  • Child
  • Child, Preschool
  • Contrast Media
  • Female
  • Gadolinium DTPA
  • Glioblastoma / blood supply
  • Glioblastoma / diagnosis
  • Hemangioma, Cavernous / blood supply
  • Hemangioma, Cavernous / diagnosis
  • Humans
  • Image Enhancement / instrumentation*
  • Image Processing, Computer-Assisted / instrumentation*
  • Intracranial Arteriovenous Malformations / diagnosis
  • Magnetic Resonance Angiography / instrumentation*
  • Male
  • Meningeal Neoplasms / blood supply
  • Meningeal Neoplasms / diagnosis
  • Meningioma / blood supply
  • Meningioma / diagnosis
  • Middle Aged
  • Organometallic Compounds
  • Pentetic Acid / analogs & derivatives


  • Contrast Media
  • Organometallic Compounds
  • Pentetic Acid
  • Gadolinium DTPA