Spectral doppler - Study guides, Class notes & Summaries

DSAE 1415 Spectral Doppler.

The doppler shift is 5000 Hz. The pulse repetition frequency is 9000 Hz. Which of the following is true? A. peak pressure gradient is 36mmHg B. range ambiguity will occur C. aliasing will occur D. the peak velocity is equal to 2 m/s - ️️C. aliasing will occur When evaluating a suspected arterial stenosis, a doppler angel of ____ degrees will produce the most accurate flow velocity. A. 0 B. 30 C. 60 D. 90 - ️️A. 0 Spatial resolution is: A. the minimum reflector separation req...

CCI RVS Exam Review| Questions and Verified Answers| 100% Correct- Grade A (2024/ 2025 Update) Q: The splenic common hepatic and left gastric arteries arise from this abdominal artery: Answer: Celiac Trunk Q: The smallest vessels in the body are: Answer: capillaries Q: The term Tunica Intima denotes: Answer: The inner lining of the arterial wall Q: The layer of arterial or venous wall composed entirely of endothelial cells is the: Answer: Tunic...

Physics - Doppler Instrumentation and Hemodynamics Exam C. Gain What Doppler control should be adjusted to optimize this Doppler spectral waveform? A. Wall filter B. Packet size C. Gain D. Pulse repetition frequency E. Baseline C. Frequency shift is increased Which of the following best describes the Doppler frequency shift when you encounter high velocities within a vessel? A. Amplitude is increased B. Power is increased C. Frequency shift is increased D. Bandwidth is decreased ...

Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor - e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer - b. turbulent flow With pulse wave Doppler a...

Astronomy Science Olympiad Master Full Guide Updated Guaranteed Success Optical double not actually binaries simply two stars lying along same line of sight (similar RA & dec) Not gravitationally bound Not usefull in determining stellar masses Visual binary both stars resolved independently if orbital pd not too long, can monitor motion provides angular separation from center of mass If dist known, linear separations can be calculated Astrometric binary If one significantly brigh...

What characterises Electro-magnetic radiation 1. Wavelength 2. amplitude - height of wave from centreline to peak 3. Polarization - orientation vector of photons 4. frequency - number of wave cycles Why can people get sunburnt whilst sitting in the shade 1. Reflected UV radiation 2. Scattered UV radiation - from atmosphere and clouds What is a high pass filter? - Image enhancement technique which enhaces the edges and finer details of an image - This is done by subtracting a lo...

ARDMS SPI Exam Questions And Answers 100% All Verified Which gain will increase the risk of bioeffects? a. transmit b. receive c. gain d. overall gain - ANS-a. transmit Which of the following is considered the memory of an ultrasound instrument? a. pulser b. transducer c. receiver d. beam former e. digital scan converter f. display monitor - ANS-e. digital scan converter Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transduc...

CCI RVS Exam (New 2024/ 2025) Questions and Verified Answers| 100%Correct A Grade. QUESTION In the US, the most common cause of portal hypertension is Answer: cirrhosis QUESTION The Splanchnic arteries are? And where do they supply blood? Answer: Celiac artery, SMA and IMA. They supply blood to the gut. QUESTION Define chronic mesenteric ischemia Answer: caused by inability of blood to reach the intestines due to stenosis or occlusion of the SMA, CA or IMA, postprandial abdomnal p...

ARDMS SPI REAL EXAM WITH CORRECT ANSWERS LATEST UPDATES Spectral broadening suggest: a. laminar flow b. turbulent flow c. flow away from the transducer d. flow towards the transducer Correct Answer: b. turbulent flow With pulse wave Doppler axial resolution: Correct Answer: degrades