The change in cerebrovascular reactivity between 3 T and 7 T measured using graded hypercapnia

  title={The change in cerebrovascular reactivity between 3 T and 7 T measured using graded hypercapnia},
  author={Ian D. Driver and Nicholas P. Blockley and Joseph A. Fisher and Susan T. Francis and Penny A. Gowland},
Mapping cerebrovascular reactivity (CVR) to hypercapnia is important both clinically and for improved understanding of the haemodynamic properties of the BOLD effect. In this work, BOLD/R2 CVR was investigated by using a device which provided small, repeatable and stable steps in PETCO2, whilst maintaining a steady PETO2 level. Significant CVR was observed in both grey and white matter at both 3 and 7 T, whilst an approximately linear relationship found between R2 CVR and field strength has… CONTINUE READING
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