Exam (elaborations)
Doppler (SPI) Questions and Answers 100% Correct Update
- Course
- Institution
Doppler (SPI) Questions and Answers 100% Correct Update
[Show more]
Content preview
Doppler (SPI) Questions and Answers 100%Correct Update 2024-2025
The doppler effect is observed as a change in ________ and has units of
_________. - ANSWER Frequence, per second
In clinical imaging, which reflectors produce most relevant Doppler shifts? -
ANSWER Red blood cells
If red blood cells are traveling TOWARD a trasducer, the F emitted by the
transducer is _______ the frequency reflected from the red blood cells. -
ANSWER Less than
What is the range of Doppler shifts commonly measure in clinical exams? -
ANSWER -20,000 Hz to +20,000 Hz
When red blood cells move AWAY from a transducer, the F of the wave reflected
from rbc is _______ the f emitted by the transducer. - ANSWER Less than
What information does the Doppler shift furnish concerning the blood cells that
produce it? - ANSWER Velocity
What is the relationship of doppler shift to velocity? - ANSWER Directly related
(when the velocity doubles, the Doppler shift doubles)
Two ultrasound transducers are used to perform Doppler exams on the same
patient. The exams are identical except that the transducer f are 5 and 2.5 Mhz.
, Which exam will measure the highest Doppler shift? - ANSWER The 5 Mhz
exam bec doppler shifts are related to the transmitted frequency
Maximum velocities are measured at a? - ANSWER Zero degree angle
A maximum Doppler shift is obtained when thr angle between the direction of
blood flow and the dierection of thr sound beam is _______. - ANSWER 180
degrees
Alising does not occur with Continuous wave Doppler. - ANSWER True
The dury cycle of the CW is 100% - ANSWER True
Range ambiguity - ANSWER The inability to distinguish the absolute depth
where the Doppler shift was created.
Duty cycle - ANSWER The percentage of time that the ultrasound transducer is
prpducing sound
Continuous wave transducers have a _______bandwidth - ANSWER Narrow
A duplex ultrasound system displays ___________information. - ANSWER 2D
image and Doppler
Continous Doppler has - ANSWER Narrow bandwidth
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StudySet. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now