@article{oai:niigata-u.repo.nii.ac.jp:00006710,
 author = {Kamei, Kiyomitsu and Aizawa, Yoshifusa and Shinada, Shoji and Shibata, Akira},
 issue = {1},
 journal = {Acta medica et biologica, Acta medica et biologica},
 month = {Jun},
 note = {We encountered a case of valvular heart disease which showed the "fuzzy echo" with thrombus in the giant left atrium, and conducted an experiment in vitro to find out the echo source. In the experiment, each blood component ( (1) plasm, (2) whole blood, (3) washed red blood cells and (4) whole blood + γ-globulin) was prepeared; each blood component was put into a beaker with stirrer. A transducer from an ultrasonography was then immersed in each of these blood components and M-mode echograms (UCG) and ultrasonic tomograms were recorded in order to observe the difference in pattern according to blood component under both still and turning round on ultrasonogram. On UCG, a belt-like echo from the bottom of the beaker toward the surface was seen in the order of (1) (2) (3) and (4) at atandstill. When the stirrer runs an increase in granular echo was observed in the same order. From the above result, it was surmised that the "fuzzy echo" would present itself in the presence of a turbulent flow with red blood cells or aggregate of red blood cells (including rouleaux formation).},
 pages = {11--18},
 title = {A case of fuzzy echo (flowing echo) and an experimental study on its mechanism},
 volume = {33},
 year = {1985}
}