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Neonatal Cerebral Blood Flow Velocity I
Author(s) -
LUNDELL B. P. W.,
LINDSTROM D. P.,
ARNOLD T. G.
Publication year - 1984
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1984.tb17780.x
Subject(s) - pulsatile flow , medicine , flow (mathematics) , blood flow , doppler effect , flow velocity , biomedical engineering , mechanics , transducer , cerebral blood flow , signal (programming language) , range (aeronautics) , acoustics , anatomy , physics , cardiology , materials science , astronomy , computer science , composite material , programming language
. A combined pulsed and continuous Doppler instrument was used to assess flow velocities in an in vitro model designed to simulate small deeply lying arterial vessels. Diameters of the model vessels, depth under the transducers and the pulsatile flow patterns were chosen to simulate the corresponding conditions that can be expected when cerebral blood flow velocities are measured with this technique through the anterior fontanel in newborn infants. Computer analysis of the space average velocity signal from the pulsed Doppler mode, showed that the area under this curve, which corresponds to distance, was closely correlated to true flow over a wide range of flows in vessels of different diameters. This variable is suggested to be the closest estimate of true flow, when the diameter of the vessel under study cannot be accurately measured.