Unlike conventional transcranial Doppler (TCD), transcranial color-coded sonography (TCCS) enables imaging of the basal cerebral arteries using color-flow ultrasonography and correction for the angle of insonation when determining blood flow velocities. We present hemodynamic data from 20 normal sub
Neonatal cerebral venous flow velocity measurement using a color flow doppler system
โ Scribed by Alan C. Fenton; Eugenia Papathoma; David H. Evans; P. Flnst; Malcolm I. Levene
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 291 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0091-2751
No coin nor oath required. For personal study only.
โฆ Synopsis
Color flow Doppler provides a simple means for studying blood flow velocity from the central cerebral veins in newborn infants. Twenty-two term infants were examined during the first four days of life to establish a normal range for velocity from the vein of Galen. A wide range of velocities was found between individuals (2.3 cm.s-1 to 9.5 cm.s-1), but short-term intraindividual variation was small (root mean square variation 1.1 cm.s-1). Light bilateral jugular venous compression was performed in 17 of the infants and produced a fall of up to 63% in venous flow velocity in 12 infants (p = 0.0005).
๐ SIMILAR VOLUMES
Purpose: To demonstrate the feasibility and repeatability of cerebrovascular reactivity (CVR) imaging using a controlled CO 2 challenge in mechanically ventilated juvenile pigs. Materials and Methods: Precise end-tidal partial pressure CO 2 (PETCO 2 ) control was achieved via a computercontrolled m