title: MR digital subtraction angiography in the diagnosis of meningiomas.
abstract: OBJECTIVE
  MR digital subtraction angiography (DSA) is a technique for demonstrating the vasculature combining a rapid two-dimensional T1-weighted sequence with a bolus injection of gadolinium. We attempted to determine its contribution to the diagnosis of intracranial meningiomas.
  
  
  METHODS
  MR DSA was performed in 18 patients with meningioma as well as in 28 patients with other tumors. The findings were analyzed regarding demonstration of tumor stain and tumor-related vessels.
  
  
  RESULTS
  All meningiomas except one were visualized as a homogeneous and intense stain. Feeding arteries were visualized in 2 patients, and draining or abnormal veins in three. In 21 of the 28 patients with other tumors, tumor stains of varying degrees were demonstrated.
  
  
  CONCLUSIONS
  MR DSA can serve as an adjunct to routine MR imaging, because it enables assessment of the hemodynamics of meningiomas and facilitates its differential diagnosis from other tumors.
authors.affiliation: Department of Radiology, Kyorin University School of Medicine 6-20-2, Shinkawa, Mitaka, Tokyo 181-8611, Japan. tsuchiyak-kyr@umin.ac.jp
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Tsuchiya
authors.forename: Shichiro
authors.initials: S
authors.lastname: Katase
authors.forename: Ayako
authors.initials: A
authors.lastname: Yoshino
authors.forename: Junichi
authors.initials: J
authors.lastname: Hachiya
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction / Q000379:methods*; D001921:Brain / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis*; D008579:Meningioma / Q000175:diagnosis*; D008875:Middle Aged; D011446:Prospective Studies; D015203:Reproducibility of Results