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Regional cerebral blood flow distributions in normal volunteers: dynamic susceptibility contrast MRI compared with 99mTc-HMPAO SPECT

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  • R Wirestam, Denmark
  • E Ryding, Denmark
  • A Lindgren, Denmark
  • B Geijer, Denmark
  • Leif Østergaard
  • L Andersson, Denmark
  • S Holtås, Denmark
  • F Ståhlberg, Denmark
PURPOSE: Relative regional cerebral blood flow (rCBF) at rest was measured in 44 volunteers using both dynamic susceptibility contrast (DSC) MRI and (99m)Tc-HMPAO SPECT on the same day. METHOD: In MRI, a Gd-DTPA-BMA contrast agent bolus (0.3 mmol/kg body wt) was monitored with a simultaneous dual FLASH pulse sequence (time resolution 1.5 s). MRI-based rCBF images were calculated by singular value decomposition-based deconvolution of the measured tissue concentration-time curve with an arterial input function from a small artery within the imaging slice. In the SPECT investigation, 900 MBq of (99m)Tc-HMPAO was injected intravenously. Relative rCBF in gray matter in the thalamus and in frontal white matter was determined. RESULTS: The ratio of relative rCBF in gray matter to relative rCBF in white matter was 2.21 +/- 0.57 using MRI and 2.24 +/- 0.54 using SPECT (mean +/- SD). CONCLUSION: Relative rCBF maps from DSC MRI and (99m)Tc-HMPAO SPECT showed good agreement, and the MRI-based rCBF ratio correlated with the corresponding SPECT-based ratio (r = 0.79, p < 0.0000006).
Original languageEnglish
JournalJournal of Computer Assisted Tomography
Volume24
Issue4
Pages (from-to)526-30
Number of pages5
ISSN0363-8715
Publication statusPublished - 2000

    Research areas

  • Adult, Aged, Aged, 80 and over, Brain, Cerebral Cortex, Cerebrovascular Circulation, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Radiopharmaceuticals, Technetium Tc 99m Exametazime, Tomography, Emission-Computed, Single-Photon

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