Chapter 1 & 3 Test Flashcards
Which of the following is known as high contrast resolution?
a.) matrix resolution
b.) none of the above
c.) spatial resolution
d.) contrast resolution
c.) spatial resolution
The window width setting in a digital imaging system is used to manipulate which of the following values?
a.) image brightness
b.) image contrast
c.) spatial resolution
d.) temporal resolution
b.) image contrast
Limiting scatter radiation does not improve image contrast.
a.) true
b.) false
b.) false
Which organization sets the standards of healthcare accreditation?
a.) private insurance companies
b.) TJC
c.) DNV
d.) centers for medicare/medicaid services (CMS)
d.) centers for medicare/medicaid services (CMS)
Besides the joint commission, what other organization is approved to accredit health care facilities?
a.) DNV
b.) CMS
c.) JCAHO
d.) ARRT
a.) DNV
Which of the following is known as low contrast resolution?
a.) spatial resolution
b.) none of the above
c.) matrix resolution
d.) contrast resolution
d.) contrast resolution
Which organization are responsible for accrediting hospital facilities by medicare services?
1.) tjc
2.) arrt
3.) acr
4.) dnv-gl
a.) a and b only
b.) a, b, c and d
c.) a and d only
d.) d only
c.) a and d only
A high SNR will produce what type of spatial resolution?
a.) SNR doesnt effect spatial resolution
b.) high
c.) low
d.) it depends on the type of noise involved
b.) high
Which of the following are considered suppliers in the radiology process? Choose all that apply.
a.) nurses and other hospital staff
b.) the community
c.) referring physicians
d.) equipment vendors
c.) referring physicians
d.) equipment vendors
Which of the following levels of quality uses statistical data to measure an outcome?
a.) perceived quality
b.) actual quality
c.) expected quality
b.) actual quality
The type of contrast that is caused by variations in the tissue density within the anatomic part to be imaged defines which of the following?
a.) inherent contrast
b.) image contrast
c.) subject contrast
d.) none of the answers are correct
c.) subject contrast
Factors that can impact spatial resolution include:
1.) patient factors
2.) focal spot size
3.) SID
a.) 1, 2 and 3
b.) 1 and 2 only
c.) 2 and 3 only
d.) 1 only
a.) 1, 2 and 3
Which levels of quality control testing can usually be performed by a quality assurance/quality management technologist:
Level 1
Level 2
Level 3
a.) 1 and 2
b.) 1 and 3
c.) 1, 2 and 3
a.) 1 and 2
Information or knowledge necessary to acheive desired outcomes
Input
Means or activity used to acheive desired outcomes
Action
The desired outcome, result, product, or characteristic that satisfies the customer
Outcome
Person, department or organization that needs or wants a desired outcome
Customer
Which of the following is part of a systems software that adjusts the image to the desired contrast?
a.) rescaling
b.) dynamic range
c.) detective quantam efficiency
d.) look up table
d.) look up table
Personnel involved in a process, equipment used in a process, and the type/quality of materials used in a process are all examples of:
a.) administrative components
b.) key process variables
c.) healthcare metrics
d.) process components
b.) key process variables
All of the following are acceptable ways to reduce radiation exposure EXCEPT:
a.) use AP instead of PA projections
b.) use intermittent (pulsed) fluoroscopy
c.) use a fast speed IR
d.) use last image hold feature
a.) use AP instead of PA projections
Which of the following is the primary controlling factor of quality?
a.) KVP
b.) mas
a.) KVP
An image demonstrating many brightness levels, shades of gray with only slight differences between the levels/shades is said to possess:
1.) long scale contrast
2.) low contrast
3.) short scale contrast
a.) 2 only
b.) 1 and 2 only
c.) 2 and 3 only
d.) 1 only
b.) 1 and 2 only
Which part of a key process is measurable?
a.) KOV
b.) KAV
c.) KIV
d.) KVP
a.) KOV
When a radiology department gets new xray equipment and performs testing to make sure everything is running smoothly and the equipment wasnt damaged in transit, this is called:
a.) acceptance testing
b.) performance testing
c.) QC testing
d.) error correction testing
a.) acceptance testing
An incident that costs a facility money or its reputation is:
Loss potential
Which of the following is an individual or entity that furnishes input or goods or services to a medical facility?
a.) internal customer
b.) patient
c.) customer
d.) supplier
d.) supplier
The nyquist frequency states that a signal must be sampled at least twice per cycle to avoid data loss.
a.) true
b.) false
a.) true