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Brain hydrodynamics study by phase‐contrast magnetic resonance imaging and transcranial color doppler
Author(s) -
Balédent Olivier,
Fin Loïc,
Khuoy Louis,
Ambarki Khalid,
Gauvin AnneCécile,
GondryJouet Catherine,
Meyer MarcEtienne
Publication year - 2006
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.20722
Subject(s) - magnetic resonance imaging , blood flow , cardiac cycle , medicine , cerebral blood flow , hemodynamics , transcranial doppler , cardiology , nuclear medicine , nuclear magnetic resonance , radiology , physics
Purpose To evaluate the contributions of phase‐contrast magnetic resonance (PCMR) and transcranial color Doppler (TCCD) imaging in the investigation of cerebral hydrodynamics. Materials and Methods A total of 13 healthy subjects were studied. Blood velocity measurements were performed with TCCD and gated PCMR imaging in major intracranial and extracranial arteries stages. Peak systolic velocity and end‐diastolic velocity were extracted to establish correlations between TCCD and PCMR imaging. Cerebral blood flow (CBF) and intracranial volume change (IVC) during the cardiac cycle were calculated, taking into account cerebrospinal fluid (CSF) oscillations. Results Despite an underestimation of velocities with PCMR imaging, significant correlations were observed for velocity measurements between the two modalities in extracranial vessels, but were poorly correlated in intracranial vessels. PCMR data processing gave a mean CBF of 690 ± 90 mL/minute. Conclusion PCMR imaging provides complementary information to TCCD to assess various intracranial parameters such as instantaneous velocities, blood and CSF flow distributions, volume variation, or pressure regulation mechanisms during cardiac cycles. J. Magn. Reson. Imaging 2006. © 2006 Wiley‐Liss, Inc.