title: Utility of time-resolved three-dimensional magnetic resonance digital subtraction angiography without contrast material for assessment of intracranial dural arterio-venous fistula.
abstract: BACKGROUND
  Intracranial dural arteriovenous fistula (DAVF) is an arteriovenous shunting disease of the dura. Magnetic resonance angiography (MRA) is expected to be a safer alternative method in evaluation of DAVF, compared with invasive intra-arterial digital subtraction angiography (IADSA).
  
  
  OBJECTIVE
  To evaluate the diagnostic use of time-spatial labeling inversion pulse (Time-SLIP) three-dimensional (3D) magnetic resonance digital subtraction angiography (MRDSA) without contrast material in six patients with DAVF.
  
  
  METHODS
  Images for 3D time-of-flight MRA, which has been a valuable tool for the diagnosis of DAVF but provide little or less hemodynamic information, and Time-SLIP 3D MRDSA, were acquired for each patient. The presence, side, and grade of the disease were evaluated according to IADSA.
  
  
  RESULTS
  In all patients, the presence and side of the DAVF were correctly identified by both 3D time-of-flight MRA and Time-SLIP 3D MRDSA. Cortical reflux present in a patient with a grade 2b DAVF was not detected by Time-SLIP 3D MRDSA, when compared with IADSA findings.
  
  
  CONCLUSIONS
  Time-SLIP 3D MRDSA provides hemodynamic information without contrast material and is a useful complementary tool for diagnosis of DAVF.
authors: Department of Radiology, School of Medicine, Juntendo University, Tokyo, Japan. mahori@juntendo.ac.jp
authors: Masaaki
authors: M
authors: Hori
authors: Shigeki
authors: S
authors: Aoki
authors: Hidenori
authors: H
authors: Oishi
authors: Atsushi
authors: A
authors: Nakanishi
authors: Keigo
authors: K
authors: Shimoji
authors: Koji
authors: K
authors: Kamagata
authors: Haruyoshi
authors: H
authors: Houshito
authors: Ryohei
authors: R
authors: Kuwatsuru
authors: Hajime
authors: H
authors: Arai
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D020785:Central Nervous System Vascular Malformations / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000379:methods*; D008297:Male; D008875:Middle Aged; D013997:Time Factors