plotting graphs of doppler RI,cut-off values for pulsatile ductus venosus

From: dr nayana parange (nparange@yahoo.com)
Sat Jun 16 07:50:28 2001


hello!

I wanted to know if centile charts and graphs are available for middle cerebral artery,uterine arteries,umbilical arteries,aorta,renal arteries and ductus venosus.

I take the RI and SD RATIO of all other vessels and the peak velocity of ductus velocity.how is ductus venosus actually reported?is it in absoloute peak systolic velocity value,or are the two peaks measured or is the reverse component measured?what is the cut off velocity for calling ductus venosus pulsatile?so far,i have been just reporting ductus venosus on the basis of visual impression.i thought it would be nice if we could plot graphs of all these vessels in the doppler report,just as we plot growth graphs during biometric assessment. please help me.

thank you for your valuable time. yours sincerely, dr nayana, india




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