Exam (elaborations)
ARDMS SPI REVIEW EXAM WITH QUESTIONS AND VERIFIED ANSWERS GRADED A+|| LATEST UPDATE 2024/2025
- Course
- Institution
ARDMS SPI REVIEW EXAM WITH QUESTIONS AND VERIFIED ANSWERS GRADED A+|| LATEST UPDATE 2024/2025
[Show more]
Content preview
ARDMS SPI REVIEW EXAM WITH QUESTIONS ANDVERIFIED ANSWERS GRADED A+|| LATEST UPDATE
2024/2025
Example of nonspecular reflector - CORRECT ANSWER red blood cells
What happens to spatial pulse length when frequency increases? - CORRECT
ANSWER decreases
Axial resolution is dependent on? - CORRECT ANSWER wavelength
Lateral resolution is dependent on? - CORRECT ANSWER beam diameter
Where does the beam of an unfocused transducer diverge? - CORRECT ANSWER
Fraunhofer zone
Reverberation artifacts are a result of - CORRECT ANSWER two or more strong
reflecting surfaces
True/False: Grating lobes are essential for the proper operation of a linear phased
array. - CORRECT ANSWER False
True/False: Electronically steered scanners always produce higher resolution
images than do mechanically steered scanners. - CORRECT ANSWER False
True/False: An annular array scanner uses mechanical beam steering. - CORRECT
ANSWER True
,True/False: A linear sequenced array cannot be dynamically focused. - CORRECT
ANSWER False
registration or B-mode alignment - CORRECT ANSWER Which AIUM test object
function utilizes all the groups of wires in the AIUM 100 mm test object?
axial resolution - CORRECT ANSWER Which AIUM test object function utilizes the
A group of wires in the AIUM 100 mm test object?
lateral resolution - CORRECT ANSWER Which AIUM test object function utilizes
the B group of wires in the AIUM 100 mm test object?
dead zone - CORRECT ANSWER Which AIUM test object function utilizes the D
group of wires in the AIUM 100 mm test object?
depth calibration - CORRECT ANSWER Which AIUM test object function utilizes
the C or E groups of wires in the AIUM 100 mm test object?
What happens to axial resolution when spatial pulse length is decreased? -
CORRECT ANSWER improves
How much will a 3.5 MHz pulse be attenuated after passing through 2 cm of soft
tissue? - CORRECT ANSWER 3.5 dB
Propagation speed errors result in - CORRECT ANSWER improper axial position
Enhancement is caused by - CORRECT ANSWER weakly attenuating structures
,The Doppler shift frequency is - CORRECT ANSWER directly proportional to the
velocity of the reflector
The number of frames per second necessary for a real-time image to be flicker free
is - CORRECT ANSWER more than 15
True/False: The SPTA intensity will always be larger than the SATA intensity. -
CORRECT ANSWER True
The intensity of the ultrasound beam is usually greater at the focal zone because of
- CORRECT ANSWER the smaller beam diameter
If the amplitude is doubled, the intensity is - CORRECT ANSWER quadrupled
The attenuation for soft tissue is - CORRECT ANSWER increased with tissue
thickness
The acoustic impedance of the matching layer - CORRECT ANSWER can be chosen
to improve transmission into the body
True/False: In a pulse-echo system, the quality factor should be made as large as
possible. - CORRECT ANSWER False
True/False: The beam diameter is constant in the near zone. - CORRECT ANSWER
False
The operating frequency is dependent on - CORRECT ANSWER thickness of the
crystal
, The period of an ultrasound wave is - CORRECT ANSWER the time of one
wavelength
The dynamic range of a system is - CORRECT ANSWER the ratio of smallest to
largest power level that the system can handle
True/False: The intensity of an ultrasonic beam can be measured with radiation
force balance. - CORRECT ANSWER True
Increasing the pulse repetition period - CORRECT ANSWER increases the
maximum depth that can be imaged
Ultrasound bioeffects - CORRECT ANSWER are not confirmed below 100 mW/cm²
SPTA
True/False: No refraction can occur at an interface if the media impedances are
equal. - CORRECT ANSWER False
True/False: Smaller transducers always produce smaller beam diameters. -
CORRECT ANSWER False
True/False: The ultrasound beam profile can be measured with a hydrophone. -
CORRECT ANSWER True
True/False: The pulsed-Doppler system yields better depth resolution than the
continuous wave (CW) system. - CORRECT ANSWER True
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 tutorWADE. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $25.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
81989 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now