Quality Assurance Flashcards
(16 cards)
_________________ is identifying and measuring characteristics of the ultrasound energy field relevant to its potential for producing biological effects.
Dosimetry
Invivo
Invitro
Dosimetry
When using a tissue equivalent phantom, _________ resolution is evaluated by measuring the WIDTH of the reflection of the target pin.
Question 9Answer
axial
lateral
Radial
temporal
lateral
When using a tissue equivalent phantom, _________ resolution is evaluated by assessing two closely spaced target pins along the sound beam’s main axis.
Question 8Answer
temporal
axial
azimuthal
lateral
axial
A __________________is a mechanism to evaluate all types of procedures performed within the ultrasound laboratory on an ongoing basis
Question 7Answer
standard operating procedure for infection control
quality assurance
continuous quality improvement (CQI) program
routine electrical inspection of the instrument
continuous quality improvement
Your US laboratory has fifty (50) US examinations available to compare with CT results. The CT confirmed the US findings in forty-two (42) cases. Of these, thirty (30) patients had disease, and twelve (12) patients had none. In 5 cases, the US found there was disease while the CT showed no disease. In another three (3) cases, the US exam revealed no disease, but the CT identified disease. The number of false positives is ________.
Question 6Answer
50
12
3
5
12
Your US laboratory has fifty (50) US examinations available to compare with CT results. The CT confirmed the US findings in forty-two (42) cases. Of these, thirty (30) patients had disease, and twelve (12) patients had none. In 5 cases, the US found there was disease while the CT showed no disease. In another three (3) cases, the US exam revealed no disease, but the CT identified disease. The number of true negatives is ________.
Question 12Answer
5
42
12
3
3
Remember: Our test is what determines negative. So there were 12 + 3 or 15 negative exams. We then need to compare to the gold standard to determine True or False.
The correct answer is: 3
Standard / Universal precautions specify ____________.
Question 13Answer
all bodily fluids are considered infectious.
all persons coming in direct contact with patients use sterile procedures.
a sonographer must determine the likelihood of infection from any given patient.
personal protection equipment (PPE) can be worn in some instances.
all bodily fluids are considered infectious.
Select the best choice regarding the use of gloves while performing an ultrasound exam.
Question 14Answer
Gloves are required during all portable exams.
Gloves are required when the patient is infectious.
Gloves should be worn during all exams.
Gloves should be worn during endocavitary exams.
Gloves should be worn during all exams.
What is the value of calculating specificity?
Question 18Answer
Indicates how often a negative test is correct.
Indicates how often a positive test is correct.
It tells you how often a positive ultrasound exam is correct.
Demonstrates how good a test is at detecting disease
It tells you how often a positive ultrasound exam is correct
The Occupational Safety and Health Administration (OSHA) specifies ___________.
Question 19Answer
all ultrasound exams require the routine use of PPE.
only high risk exams require the use of PPE.
all ultrasound exams must be performed under sterile conditions.
all activities should be classified according to their risk of potential exposure.
all activities should be classified according to their risk of potential exposure.
Your US laboratory has fifty (50) US examinations available to compare with CT results. The CT confirmed the US findings in forty-two (42) cases. Of these, thirty (30) patients had disease, and twelve (12) patients had none. In 5 cases, the US found there was disease while the CT showed no disease. In another three (3) cases, the US exam revealed no disease, but the CT identified disease. The number of True Positives is ________.
Question 20Answer
30
42
5
12
30
30 were positive by US and confirmed true by the gold standard.
True Positive can be defined as ________________________.
Our test indicates disease and is correct
Our test indicates normal and is correct
Our test indicates disease and is incorrect
Our test indicates normal and is incorrect
Our test indicates disease and is correct
In regard to the use of a tissue equivalent phantom, _______________ can be defined as the ability of the ultrasound instrument to accurately place a reflected signal in the proper location on the display even when imaged from various acoustic positions and scan plane orientation.
Question 25Answer
Dead Zone
Uniformity
Registration
The focal zone
Registration
The use of a tissue equivalent phantom in a quality assurance (QA) program to test image accuracy would be considered ______________.
Question 27Answer
largely useless in today’s computerized instrument
a marginal component of a QA program
objective
subjective
objective
In order to assess the elevational resolution of an ultrasound system, a(n) _______________ would be the optimal choice.
Question 26Answer
electrical phantom
tissue equivalent phantom
Doppler phantom
beam profile and slice thickness phantom
beam profile and slice thickness phantom
Which of the following organizations regulates the output of ultrasound transducers?
American Institute of Ultrasound in Medicine (AIUM)
American College of Radiology (ACR)
American Registry of Diagnostic Medical Sonographers (ARDMS)
Food and Drug Administration (FDA
Food and Drug Administration (FDA
