Chapter 5 Penny

Question 1

the ability to accurately identify reflectors that are arranged parallel to the ultrasound beam

Answer 1

axial resolution

Question 2

the ability to differentiate one shade of gray from another

Answer 2

contrast resolution

Question 3

the test object used to evaluate the flow direction, the depth capability or penetration of the Doppler beam, and the accuracy of the sample volume location and measured velocity

Answer 3

Doppler phantom

Question 4

the resolution in the third dimension of the beam or slice-thickness plane

Answer 4

elevational plane

Question 5

the ability to place echoes in the proper location horizontally and perpendicular to the sound beam

Answer 5

horizontal calibration

Question 6

a voluntary process that acknowledges an organization’s competency and credibility according to standards and essentials set forth by a reliable source

Answer 6

lab accreditation

Question 7

the ability to accurately identify reflectors that are arranged perpendicular to the ultrasound beam

Answer 7

lateral resolution

Question 8

a methodical way of evaluating equipement’s performance on a routine basis to ensure proper and accurate equipment function

Answer 8

preventative maintenance

Question 9

a planned program consisting of scheduled equipment-testing activities that confirm the correct performance of the machine

Answer 9

quality assurance program

Question 10

the ability to place echoes in the correct location

Answer 10

registration

Question 11

the area within the range gate where the Doppler signals are obtained

Answer 11

sample volume

Question 12

the ability of a system to display low-level or weak echoes

Answer 12

sensitivity

Question 13

the test object that evaluates the elevational resolution, or the thickness portion, of the sound beam perpendicular to the imaging plane

Answer 13

slice-thickness phantom

Question 14

the test object that mimics the acoustic properties of human tissue and is used to ensure proper equipment performance

Answer 14

tissue-equivalent phantom

Question 15

the distance from the transducer

Answer 15

vertical depth

Question 16

Comprehensive preventative maintenance must be performed at least:
a. daily
b. semiannually
c. annually
d. when a problem occurs

Answer 16

b

Question 17

Which test object uses a moving belt, vibrating string or a fluid pump?

Answer 17

Doppler phantom

Question 18

bWhich of the following tests the ability of reflectors to be accurately imaged within the first centimeter of the sound beam?
a. sensitivity
b. dead zone
c. fresnel zone
d. axial resolution

Answer 18

b

Question 19

The test used to evaluate the depth of reflectors from a transducer is called:

Answer 19

vertical depth calibration

Question 20

All of the following are goals for a quality assurance program except:
a. document proper equipment performance
b. optimize image quality consistently
c. keep detailed results from quality assurance testing
d. report equipment malfunctions annually

Answer 20

d

Question 21

The only certifying agency that offers credentialing exams for cardiac and vascular testing is:

Answer 21

CCI

Question 22

Which of the following is a voluntary process that acknowledges an organization’s competency and credibility according to standards and essentials set forth by a reliable source?
a. credentialing
b. accredidation
c. licensure
d. registration

Answer 22

b

Question 23

Which of the following is the system’s ability to detect weak echoes?
a. uniformity
b. registration
c. sensitivity
d. dead zone

Answer 23

c

Question 24

What type of errors will cause artificial echoes to appear within a cystic structure?

Answer 24

slice thickness

Question 25

Which of the following indicates the maximum depth of visualization? a. vertical distance b. horizontal distance c. lateral resolution d. sensitivity

Answer 25

a

Question 26

Which of the following is as methodical way of evaluating equipment's performance on a routine basis to ensure proper and accurate equipment function? a. accreditation b. quality assurance c. preventative maintenance d. credentialing

Answer 26

c

Question 27

Who among the following is responsible for ensuring an effective quality assurance program in the sonography lab? a. physician b. engineer c. biomedical specialist d. sonographer

Answer 27

d

Question 28

Which of the following is the ability to accurately identify reflectors that are arranged front to back and parallel to the ultrasound beam? a. registration b. axial resolution c. vertical distance d. lateral resolution

Answer 28

b

Question 29

What is another term used for range accuracy?

Answer 29

depth calibration

Question 30

Which of the following is the test object that evaluates the elevation resolution, or the thickness portion, of the sound beam perpendicular to the imaging plane? a. test object b. Doppler testing phantom c. Tissue-equivalent phantom d. slice-thickness phantom

Answer 30

d

Question 31

What describes the system's ability to place echoes in the proper location horizontally and perpendicular to the imaging plane?

Answer 31

horizontal calibration

Question 32

The test object that mimics the acoustic properties of human tissue and is used to ensure proper equipment performance is:

Answer 32

Tissue-equivalent phantom

Question 33

Which of the following does the Doppler phantom not typically evaluate? a. Flow direction b. Subtle tissue differences c. depth capability of the beam d. accuracy of sample volume location

Answer 33

b

Question 34

Which of the following is not an accrediting agency of sonography labs? a. American Institute of Ultrasound in Medicine b. American Registry of Diagnostic Medical Sonography c. Intersocietal Accredidation Commission d. American College of Radiology

Answer 34

b

Question 35

Which of the following is not a credential granting body for sonographers? a. American Registry of Diagnostic Medical Sonography b. Cardiovascular Credential International c. American Registry of Radiographic Technologists d. American Institute of Ultrasound in Medicine

Answer 35

d