```My suggestion to you is.. stop working incredibly hard and use the angle
correct close to 60,,58,55,45, 35  try it and see if you change the outcome
of the stenoses.
I have not had a problem remaining consistent. Do you go straight or angle
with the steering of the color box? You can try different steering.  If a
diastolic velocity of over 100 it does not matter if you are at 60 or 55
degree angle. it is still 80-90% stenosed.
Focus on getting a good doppler and the rest will fall into place.
Denise Levy, RVT, RDMS, RDCS
MISS group
San Jose, CA

>  OK- so next question: Yes, I insist that angle is parallel to vessels, of
> course.  Are you fols out there at 30 or 45 degrees notating this on exam
> worksheets and even prehaps carrying over that info to final reports that
> are distributed to the masses?
> My rules:
> 1.  Work incredibly hard to get 60 or zero parallel to vessel walls.
> 2.  If it simply cannot be done, then minor deviations allowed as long as
> they are clearly documented on images and reports, so all involved is aware.
>
>  ------------------------------
>
> *Sent:* Fri, January 8, 2010 3:54:35 PM
> *Subject:* Re: Am I old school now?
>
> If the angle correct is set parallel to flow, the sampled velocity will be
> accurate, regardless of what the angle is -- 0, 60, 45, 70 etc. The issue is
> that the greater the angle utilized, the greater error will be if you are
> not exactly parallel to flow when the velocity is Sampled. If your angle
> correct Is off parallel , from flow direction, by 5 degrees the error will
> be greater at a 70 angle as compared to a 60 angle. pound per pound, bigger
> angles have the potential for bigger errors in calculated velocity.
>
> Sent from my Verizon Wireless BlackBerry
> ------------------------------
> *Date: *Fri, 8 Jan 2010 11:08:29 -0800
> *Subject: *Am I old school now?
>
>  I reviewed the archives and followed debates on 11-2003 on Doppler angle
> of correction. My question is this: Am I being too strict on staff to insist
> that they do their best to remain as close to 60 degrees as humanly possible
> even on tough abd/renal cases?  I am a 60 degrees and zero degrees kind of
> gal ( I do allow them very minimal deviations but never in the range of
> between 45-15 degrees).  My younger techs argue that when preparing for
> vascular registry, a source or sources says anything less than 60 degrees is
> ok.
> My primary argument is that with a lab our size, reproducibly would be a
> huge problem!  Secondly, I have killed myself all these years to go after 60
> oro 0 lol.
>
> Cyndi
>
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