Time-resolved projection MRA: clinical application in intracranial vascular malformations

Neuroradiology. 2000 Feb;42(2):104-7. doi: 10.1007/s002340050024.


We report preliminary results of imaging intracranial vascular malformations with time-resolved projection MRA after a bolus injection of contrast median before and after endovascular treatment. Projection angiograms are acquired with a slice-selective snapshot FLASH sequence with a time resolution of two images per second, 40-60 images being acquired consecutively after bolus injection of 15 ml Gd-DTPA. Postprocessing of images in 2D projection MRA by correlation analysis offers several advantages with significant improvement of signal-to-noise, leading to adequate anatomical resolution. Subsecond projection MRA is a reliable technique for imaging intracranial vessels and gives information about the haemodynamics of vascular malformations.

Publication types

  • Comparative Study

MeSH terms

  • Angiography, Digital Subtraction
  • Arteriovenous Fistula / diagnosis*
  • Arteriovenous Fistula / diagnostic imaging
  • Arteriovenous Fistula / therapy
  • Carotid Artery, Common / diagnostic imaging
  • Carotid Artery, Common / pathology
  • Carotid Artery, External / diagnostic imaging
  • Carotid Artery, External / pathology
  • Contrast Media / administration & dosage
  • Dura Mater / blood supply*
  • Embolization, Therapeutic
  • Gadolinium DTPA / administration & dosage
  • Hemodynamics
  • Humans
  • Image Enhancement
  • Image Processing, Computer-Assisted / methods*
  • Injections, Intravenous
  • Intracranial Arteriovenous Malformations / diagnosis*
  • Intracranial Arteriovenous Malformations / diagnostic imaging
  • Intracranial Arteriovenous Malformations / therapy
  • Jugular Veins / diagnostic imaging
  • Jugular Veins / pathology
  • Magnetic Resonance Angiography / methods*
  • Reproducibility of Results
  • Signal Processing, Computer-Assisted
  • Time Factors


  • Contrast Media
  • Gadolinium DTPA