title: [Influence of digital subtraction cerebral angiography on blood flow in the middle cerebral artery].
abstract: The aim. Despite adhibition of new, improved enhancing agents some subjective signs during cerebral angiography are notified. This suggests that cerebral blood flow might be influenced by this procedure. The validity of transcranial color doppler sonography (TCCS) in cerebral blood flow evaluation is already proved and this method was selected for blood flow parameters estimation before and after cerebral angiography.
  
  
  METHODS
  33 subjects (17 female and 16 male) aged 50 +/- 13 were diagnosed by cerebral angiography. Before and immediately after angiographic examination cerebral blood flow parameters were evaluated in middle cerebral arteries by transcranial, sektor 2.5 MHz probe of Toshiba Aplio SSA 770A system.
  
  
  RESULTS
  In comparison to pre-angiographic TCCS examination middle cerebral artery systolic velocity decreased about 3 cm/s (p<0.05). Mean and end-diastolic velocity in MCA insignificantly increased about 1 and 2 cm/s respectively (p>0.05). Impedance index values significantly decreased (Wilcoxon test, p<0.05) after angiography.
  
  
  CONCLUSIONS
  Change of flow parameters in the middle cerebral artery prove increase of cerebral blood flow after diagnostic angiography.
authors.affiliation: Akademia Medyczna w Białymstoku, Klinika Neurochirurgii. kochanowicz@vp.pl
authors.forename: Jan
authors.initials: J
authors.lastname: Kochanowicz
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Januszkiewicz
authors.forename: Jacek Ireneusz
authors.initials: JI
authors.lastname: Chajewski
authors.forename: Andrzej
authors.initials: A
authors.lastname: Lewszuk
authors.forename: Zenon
authors.initials: Z
authors.lastname: Mariak
authors.forename: Janusz
authors.initials: J
authors.lastname: Lewko
mesh_terms: D000328:Adult; D015901:Angiography, Digital Subtraction; D001783:Blood Flow Velocity; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging* / Q000502:physiology; D018615:Ultrasonography, Doppler, Color; D017585:Ultrasonography, Doppler, Transcranial