title: Contrast-enhanced transcranial color sonography in the diagnosis of cerebral circulatory arrest.
abstract: OBJECTIVE
  We sought to determine the utility of constrat-enhanced transcranial color sonography (TCCS) in the diagnosis of cerebral circulatory arrest in cases of difficult acoustic window.
  
  
  METHODS
  From January 2007 to July 2008, we prospectively studied 50 patients who fulfilled clinical criteria of brain death. In all cases, we performed TCCS aiming to insonate both middle cerebral arteries (MCA) and the basilar artery (BA). In those case in which insonation of any vessel was not possible, we repeated the exploration after injecting a 2.5-mL bolus of sulphurhexafluoridedispersion. Afterward, we compared the rate of insonation of the vessels and the number of conclusive studies.
  
  
  RESULTS
  The mean patient age was 53.2 +/- 15.9 years. Thirty-two were men (64%). The most frequent neurologic injury was hemorrhagic stroke and traumatic brain injury. Contrast-enhanced TCCS resulted in an increased rate of insonation in both MCA and in BA, and in the number of conclusive studies.
  
  
  CONCLUSIONS
  Contrast-enhanced TCCS increased the number of conclusive studies with cerebral circulatory arrest, which minimized the importance of a previous study in cases with a poor acoustic window.
authors: Hospital Universitario Son Dureta, Palma de Mallorca, Illes Balears, Spain. juanantonio.llompart@ssib.es
authors: J A
authors: JA
authors: Llompart-Pou
authors: J M
authors: JM
authors: Abadal
authors: J
authors: J
authors: Velasco
authors: J
authors: J
authors: Homar
authors: C
authors: C
authors: Blanco
authors: J I
authors: JI
authors: Ayestarán
authors: J
authors: J
authors: Pérez-Bárcena
mesh_terms: D000328:Adult; D000368:Aged; D001926:Brain Death; D001930:Brain Injuries / Q000000981:diagnostic imaging; D002539:Cerebral Arterial Diseases / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020768:Middle Cerebral Artery / Q000000981:diagnostic imaging*; D014019:Tissue Donors; D018615:Ultrasonography, Doppler, Color; D017585:Ultrasonography, Doppler, Transcranial / Q000379:methods; D020301:Vasospasm, Intracranial / Q000000981:diagnostic imaging*