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SPI 2 Exam 4 Questions and Answers 100% Correct |
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SPI 2 Exam 4 Questions and Answers100% Correct | 2024-2025
You are using a tissue equivalent phantom. At a particular depth, reflections are
no longer observed. What are you evaluating? - ANSWER Sensitivity
Using a tissue equivalent phantom, two pins at depths of 2 cm and 10 cm are
imaged. On the system display, you measure the distance between the two
reflections created by these pins. What are you evaluating? - ANSWER Range
calibration
The accuracy of placing reflections on an A-mode, B-mode, or M-mode in relation
to the depth of reflectors is called: - ANSWER Depth calibration
Using a tissue equivalent phantom, a sonographer adjusts the gain so that
reflections on the display change from fully bright to barely visible. What is the
sonographer evaluating? - ANSWER Sensitivity
Which of the following phantoms can be used to evaluate performance Doppler
systems? - ANSWER String phantom
Which of the following terms best describes the interval at which quality
assurance evaluations should be performed? - ANSWER Routinely
Which of the following phantoms has similar attenuation properties as that of soft
tissue? - ANSWER Tissue equivalent
, The region where no imaging can take place is called the: - ANSWER Dead zone
Statistical Analysis is used to find out if the results of: - ANSWER Clinical testing
is accurate
To perform statistical analysis, a Chi square is used. This incorporates: -
ANSWER Comparison test vs gold standard
The term ""true positive"" means: - ANSWER The test said there was disease
when there was
The following information is needed to find the positive predictive value: -
ANSWER All of the positives
What statistical finding is defined as "the ability of a test to detect the absence of
disease"? - ANSWER Specificity
What are two types of bioeffects? - ANSWER Thermal and Mechanical
What is an example of thermal bioeffects? - ANSWER Tissue heating above 2
degrees C
What is an example of mechanical bioeffects? - ANSWER Stable and transient
cavitation
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