Unit Exam I practice
Quiz by Bonnie Oleksy
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- Q1
An ultrasound characteristic of the normal internal carotid artery (ICA) includes which one of the following?
High- resistance doppler signal
Low-resistance doppler signal
Anterior and medial origination at the bifurcation
Cervical branches
15s - Q2
Which one of the following is not an ultrasound finding of an ICA occlusion?
Loss of diastolic flow in the common carotid artery (CCA)
Reduced diastolic blood flow pattern
Lack of arterial pulsations
Echogenic material filling the lumen
15s - Q3
Transient partial or complete loss of vision is known as which one of the following?
Amaurosis fugax
Ataxia
Vertigo
Aphasia
15s - Q4
The spectral Doppler display on a duplex ultrasound system is generated by which of the following processes?
Autocorrelation
Zero-crossing detection
Fast Fourier Transform
Analog processing
15s - Q5
To improve the AXIAL resolution of an image, you could:
Add focal zones
Adjust the elevation plane focus
Increase the transmit frequency
Decrease the transmit frequency
15s - Q6
Which of the following does not affect color frame rate?
Color scan line density
Color box width
Packet size
Color gain
15s - Q7
In the Doppler equation for velocity, what is Cos Q (theta) ?
The Doppler beam angle of incidence to flow
The Doppler steering angle
The propagation speed
The sample volume depth
15s - Q8
Laminar flow is disrupted and turbulence occurs when the Reynold’s number meets or exceeds what value?
100
200
2000
1000
15s - Q9
The highest pressure in the arterial system is found in what region or organ?
Left ventricle of the heart
Posterior tibial arteries
Internal carotid artery
Abdominal aorta
15s - Q10
A stroke symptom in which a patient cannot speak or express themselves is called:
Amaurosis
Syncope
Dysarthria
Aphasia
15s