Cyclic changes of blood echogenicity in high-frequency ultrasound.
Ultrasound images from human arteries obtained in vivo with an intravascular 30 MHz ultrasound imaging device show that blood echogenicity changes during the cardiac cycle. Quantitative measurements of blood echogenicity during the cardiac cycle suggest that these variations may be related to changes in the state of erythrocyte aggregation, which are induced by varying shear rate.
de Kroon
M G
MG
Thoraxcenter, University Hospital, Rotterdam, The Netherlands.
Slager
C J
CJ
Gussenhoven
W J
WJ
Serruys
P W
PW
Roelandt
J R
JR
Bom
N
N
D001783:Blood Flow Velocity; D003326:Coronary Circulation; D004903:Erythrocyte Aggregation; D006339:Heart Rate; D006801:Humans; D007083:Iliac Artery / Q000000981:diagnostic imaging* / Q000502:physiology; D007091:Image Processing, Computer-Assisted; D014463:Ultrasonography; D014741:Video Recording