Kj. Hutchison, DOPPLER ULTRASOUND SPECTRAL SHAPE DOWNSTREAM OF SIGNIFICANT ARTERIAL-STENOSIS IN-VIVO, Ultrasound in medicine & biology, 21(4), 1995, pp. 447-458
Citations number
14
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
Peak analysis was applied to pulsed Doppler ultrasound spectra from in
vive poststenotic velocity fields of canine common carotid arteries,
Turbulent spectra from a region of jet breakup, five diameters (5 D) d
own from a 68% diameter reducing stenosis, were closely approximated b
y a single Gaussian peak, Multiple peaks resulting from the analysis o
f complex spectra from the shear layers between jet and recirculation
zones, 1.5 D downstream of a 40% stenosis, correlated well with the kn
own features of the poststenotic velocity field, It is concluded that
peak analysis can be used to separate the spectral components of disti
nct flow regimes from the complex spectra of regions of complicated fl
ow, This may provide a method for the diagnosis of mild degrees of art
erial stenosis using pulsed Doppler ultrasound.