Realtime Velocimetrv for Evaluation of Thickness of MyGcardium and Arteri

for accuratrly t,racking t.hr movemcnt of the heart wall A bslracf~~-~W'e have already developed a new method and arkrial wall based 011 both bhe phase and magnit,udr of the demodulated signals t,o determine thr instantaneous posit.ion of an object. By pipelining and parallcl processing using four high-speed digital signal processiug (DSP) chips, thc above developed Irlet.hod is realizrd in real time. By I,his syst,em, velocity signals of the ltcart/arterial wall with small amplitudes less a Ireart,hrat with large amplitude of several millimet.han several Inirrometers 011 thc lnot,iou resulting from krs. ran be successfr~lly det,ected in real time. Frotn t,hr rvgioltal change in thickness of the hcart wall, spatial dist,ributioll of myocardzal moltlily and coatractility call he evaluated. For the artrrial wall, ifs clnslirily can be ~~aluattd hy refrrring to the blood pressure. This new rPal-l.ime system offers potent,ial for quant,it,at,ive diagnosis of ntyocardial mot,ilit.y and early-stage atlwrosclerosis.