title: Usefulness of 3-Tesla magnetic resonance arterial spin-labeled imaging for diagnosis of cranial dural arteriovenous fistula.
abstract: OBJECTIVE
  Conventional digital subtraction angiography (DSA) has been a useful tool for the diagnosis of cranial dural arteriovenous fistula (cDAVF). In most patients with cDAVF, blood flow through the arteriovenous shunt was pooled at diseased veins and/or sinuses. Therefore, we speculated that pooled blood at diseased veins in patients with cDAVF could be detected on arterial spin-labeled imaging (ASL). The purpose of the present study was to investigate the usefulness of ASL to detect cDAVF.
  
  
  METHODS
  Consecutive 13 patients with cDAVF who were admitted to our hospital between April 2013 and September 2016 were included in our study. We performed magnetic resonance imaging (MRI), including ASL, before DSA and within 7days after treatment for all of our patients. The accuracy for diagnosis of cDAVF was compared between conventional MRI findings and ASL findings. We also investigated the difference in ASL findings before and after treatment.
  
  
  RESULTS
  We could detect venous ASL signals in 12 patients, and this was more sensitive for diagnosis of cDAVF versus conventional MRI findings. ASL found the same location of cDAVF as conventional angiography. After successful treatment, venous ASL signals disappeared.
  
  
  CONCLUSIONS
  ASL might be useful to detect cDAVF and predict the location of diseased sinuses.
authors.affiliation: Department of Clinical Neurosciences, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan. Electronic address: nobyamamoto521129@yahoo.co.jp.
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Yamamoto
authors.affiliation: Department of Neurosurgery, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan.
authors.forename: Junichiro
authors.initials: J
authors.lastname: Satomi
authors.affiliation: Department of Clinical Neurosciences, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Yamamoto
authors.affiliation: Department of Clinical Neurosciences, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan.
authors.forename: Yuishin
authors.initials: Y
authors.lastname: Izumi
authors.affiliation: Department of Neurosurgery, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Nagahiro
authors.affiliation: Department of Clinical Neurosciences, Institute of Medical Biosciences, Tokushima University, Tokushima, Japan.
authors.forename: Ryuji
authors.initials: R
authors.lastname: Kaji
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction; D020785:Central Nervous System Vascular Malformations / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013113:Spin Labels
chemical_list: D013113:Spin Labels
keywords: Arterial spin-labeled imaging; Dural arteriovenous fistula; Venous arterial spin-labeled imaging signals