Combination of dynamic and integral methods for generating reproducible functional CBF images

A. A. Lammertsma, V. J. Cunningham, M. P. Deiber, J. D. Heather, P. M. Bloomfield, J. Nutt, R. S.J. Frackowiak, T. Jones

Research output: Contribution to journalArticlepeer-review

106 Scopus citations

Abstract

A new method to measure regional CBF is presented, applying both dynamic and integral analyses to a dynamic sequence of positron emission tomographic scans collected during and following the administration of H215O (inhalation of C15O2). The dynamic analysis is used to correct continuously monitored arterial whole-blood activity for delay and dispersion relative to tissue scans. An integral analysis including corrections for this delay and dispersion is then used to calculate CBF on a pixel by-pixel basis. Normal values and reproducibility over a 2-h period are presented, together with the results of validation and simulation studies. The results indicate that the single-tissue compartment model adequately describes the distribution of H215O in the brain, without recourse to postulating a nonexchanging water pool.

Original languageEnglish (US)
Pages (from-to)675-686
Number of pages12
JournalJournal of Cerebral Blood Flow and Metabolism
Volume10
Issue number5
DOIs
StatePublished - 1990
Externally publishedYes

Keywords

  • Delay and dispersion
  • Functional images
  • O-labelled water
  • Regional cerebral blood flow
  • Simulation

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology
  • Cardiology and Cardiovascular Medicine

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