CT Test review
"A unique set of steps to be executed in a specific order to clear up a trouble" describes:
A. An algorithm
B. Beam attenuation
C. The suggest of a random variable
D. The binomial possibility formulation - ANS-A. An set of rules
A assessment fabric that is of a substantially higher density than that of the surrounding
systems can be referred to as a __ agent:
A. Low attenuation
B. Fine
C. Terrible
D. Gastrointestinal - ANS-B. Positive
A tool this is used to routinely load an unload optical discs is referred to as a/n:
A. Ethernet
B. Tape force
C. Media merchandising gadget
D. Optical jukebox - ANS-D. Optical jukebox
A focused appendiceal CT refers to a scan protocol that:
A. Limits the scan region to the decrease stomach and upper pelvis
B. Makes use of a rectal assessment agent
C. Does not consist of any sort of assessment media
D. Scans the complete stomach and pelvis with IV and oral contrast material - ANS-A. Limits
the test region to the decrease abdomen and upper pelvis
A graphical representation of the CT system's capability of passing information through it to
the observer is known as:
A. Interpolation
B. Modulation switch feature (MTF)
C. Receiver operator characteristics
D. Evaluation element response - ANS-B. Modulation switch feature (mtf)
A trouble of scanner created MPR's is:
A. Best one examination protocol per scanner can be programmed to mechanically create
MPR's
B. They take greater time to create than manually produced MPR's
C. In maximum instances, most effective immediately sagittal and coronal planes can be
automatically generated
D. They're not always produced, so techs ought to keep in mind to check to look whether
they have been created - ANS-C. In most cases, only straight sagittal and coronal planes
may be automatically generated
,A magnification factor of one.5 is used to extend the photo records, ensuing in:
A. A lower in the pixel length
B. An growth within the pixel length
C. An inaccuracy in any subsequent distance size
D. An photograph that is large and can permit a more correct cursor placement for
measurements - ANS-D. An photograph that is larger and can permit a more correct cursor
placement for measurements
A MIP is a great method to display all the following EXCEPT?
A. Pulmonary nodules
B. Fracture extent
C. Evaluation crammed coronary arteries
D. Bronchial tree - ANS-D. Bronchial tree
A noncontrast CT of the abdomen is ordered on Mr. Smith. The primary indication is a
15year history of alcoholism. What can the technologist do to assist the radiologist decide
whether the affected person has a fatty liver?
A. Administer IV contrast and repeat collection
B. Administer extra oral evaluation and repeat series
C. Keep scanning via pelvis, even though a pelvic examination become not ordered
D. Place a place of interest HU measurement in the liver and spleen earlier than filming -
ANS-D. Place a area of hobby HU measurement inside the liver and spleen earlier than
filming
A patient is being placed for a routine test of the brain. Why is he asked to tuck his chin
down toward his chest?
A. In order that the test time may be decreased
B. To permit immobilization sponges to be used
C. To lessen radiation publicity to the lens of the attention
D. To put off the want to tilt the gantry so that the axial scan mode may be used - ANS-C. To
lessen radiation publicity to the lens of the attention
A affected person who's scheduled for a CT observe has an abnormal heartbeat with a fee
about 85bpm. For which medical indication is this the most problematic?
A. Coronary artery disease
B. Assessment of ventricular feature
C. Feasible thoracic aortic dissection
D. Assessment of congenital aortic arch anomaly - ANS-A. Coronary artery ailment
A scheme that compresses an photo with none lack of facts while the photo is
decompressed is called:
A. Lossy
B. Fractional coding
C. Scalar and vector quantization
D. Lossless - ANS-D. Lossless
,A volumetric HRCT have a look at refers to a protocol that consists of which of the
subsequent?
A. Thin sections, taken at an c language of 20mm or extra between slices, at some point of
idea, with the affected person in supine function
B. A sampling technique that is intended to provide representative regions of the lung
C. Thins sections, in a helical mode, taken contiguously a good way to cover the entire lung,
throughout proposal with the affected person in a supine function
D. 3 series of thin sections, in helical mode, taken contiguously with a purpose to cowl the
entire lung; collection one is supine inspiratory; series two is supine expiratory; and
collection 3 is susceptible inspiratory - ANS-C. Skinny sections, helical mode, taken
contiguously so that it will cover the entire lung, during idea with the affected person in a
supine role
A water phantom is scanned and several ROI's are placed within the ensuing photograph.
The ROI's located at the fringe of the picture measure otherwise from the ROI's close to the
center. This indicates a trouble with:
A. Linearity
B. Pass area uniformity
C. Noise
D. Low assessment decision - ANS-B. Move field uniformity
A water phantom is scanned and several ROI's are positioned in the ensuing image. The
standard deviation measurements from the ROI's variety from 15-25. What may be stated
approximately the image?
A. It is noisy
B. The spatial decision is 15 to 25lp/cm
C. The low contrast resolution is inside everyday limits
D. The radiation dose is unnecessarily excessive - ANS-A. It's miles noisy
After the injection of an iodinated contrast medium, sufferers with brain metastasis have
extended danger of:
A. Seizures
B. Dehydration
C. Anaphylactoid reaction
D. Renal failure - ANS-A. Seizures
All of the following are key aspects of a exceptional warranty software EXCEPT:
A. The checks that make up this system must be done on a regular foundation
B. All assessments ought to be completed by using a scientific physicist
C. The consequences from all tests ought to be recorded the usage of a steady layout
D. Documentation should indicate whether or not the tested parameter is within targeted
recommendations - ANS-B. All assessments ought to be completed by using a clinical
physicist
All of the following are experiment parameters EXCEPT:
A. MAs
B. Slice thickness
C. Matrix
, D. Pitch - ANS-C. Matrix
All of the subsequent are synonyms for helical scanning except:
A. Volumetric scanning
B. Spiral scanning
C. Non-stop acquisition scanning
D. Dynamic scanning - ANS-D. Dynamic scanning
All of the subsequent are genuine statements concerning patient restraints EXCEPT:
A. The immobilizer should be easy to dispose of speedy if necessary
B. Sufferers are restrained in the main as a convenience for the technologist
C. If leg immobilizers are important, wrist immobilizers need to additionally be carried out
D. A Dr's order is important when a pt is to be restricted towards his will - ANS-B. Sufferers
are limited in general as a comfort for the technologist
All of the subsequent had been upgrades vital to make helical scanning possible besides:
A. Fourth technology scanner layout
B. Gantries with slip ring layout
C. Software the adjusts for desk motion
D. Improved uncooked statistics management - ANS-A. Fourth technology scanner design
All the following are negative aspects of the hand bolus approach of contrast management
EXCEPT?
A. Flow fee is variable
B. Scan postpone can not be exactly managed
C. It requires operators
D.It can not be used for injecting into general PICC traces - ANS-D. It can not be used for
injecting into trendy PICC traces
All the lots of bits of data received by using the CT machine with each test are called?
A. Image data
B. Calibration vectors
C. Raw data
D. Ray sums - ANS-C. Uncooked facts
Although affected person compliance can occasionally be a element, what volume of oral
comparison is typically taken into consideration the minimal quantity needed for a ordinary
CT observe of the abdomen and pelvis?
A. 100ml
B. 400ml
C. 600ml
D. 1500ml - ANS-C. 600ml
An adrenal mass that measures less than or same to 10HU on unenhanced CT:
A. Is an adenoma
B. Is most probably malignant
C. Can be both an adenoma or a malignant mass
D. Is lipid poor - ANS-A. Is an adenoma
"A unique set of steps to be executed in a specific order to clear up a trouble" describes:
A. An algorithm
B. Beam attenuation
C. The suggest of a random variable
D. The binomial possibility formulation - ANS-A. An set of rules
A assessment fabric that is of a substantially higher density than that of the surrounding
systems can be referred to as a __ agent:
A. Low attenuation
B. Fine
C. Terrible
D. Gastrointestinal - ANS-B. Positive
A tool this is used to routinely load an unload optical discs is referred to as a/n:
A. Ethernet
B. Tape force
C. Media merchandising gadget
D. Optical jukebox - ANS-D. Optical jukebox
A focused appendiceal CT refers to a scan protocol that:
A. Limits the scan region to the decrease stomach and upper pelvis
B. Makes use of a rectal assessment agent
C. Does not consist of any sort of assessment media
D. Scans the complete stomach and pelvis with IV and oral contrast material - ANS-A. Limits
the test region to the decrease abdomen and upper pelvis
A graphical representation of the CT system's capability of passing information through it to
the observer is known as:
A. Interpolation
B. Modulation switch feature (MTF)
C. Receiver operator characteristics
D. Evaluation element response - ANS-B. Modulation switch feature (mtf)
A trouble of scanner created MPR's is:
A. Best one examination protocol per scanner can be programmed to mechanically create
MPR's
B. They take greater time to create than manually produced MPR's
C. In maximum instances, most effective immediately sagittal and coronal planes can be
automatically generated
D. They're not always produced, so techs ought to keep in mind to check to look whether
they have been created - ANS-C. In most cases, only straight sagittal and coronal planes
may be automatically generated
,A magnification factor of one.5 is used to extend the photo records, ensuing in:
A. A lower in the pixel length
B. An growth within the pixel length
C. An inaccuracy in any subsequent distance size
D. An photograph that is large and can permit a more correct cursor placement for
measurements - ANS-D. An photograph that is larger and can permit a more correct cursor
placement for measurements
A MIP is a great method to display all the following EXCEPT?
A. Pulmonary nodules
B. Fracture extent
C. Evaluation crammed coronary arteries
D. Bronchial tree - ANS-D. Bronchial tree
A noncontrast CT of the abdomen is ordered on Mr. Smith. The primary indication is a
15year history of alcoholism. What can the technologist do to assist the radiologist decide
whether the affected person has a fatty liver?
A. Administer IV contrast and repeat collection
B. Administer extra oral evaluation and repeat series
C. Keep scanning via pelvis, even though a pelvic examination become not ordered
D. Place a place of interest HU measurement in the liver and spleen earlier than filming -
ANS-D. Place a area of hobby HU measurement inside the liver and spleen earlier than
filming
A patient is being placed for a routine test of the brain. Why is he asked to tuck his chin
down toward his chest?
A. In order that the test time may be decreased
B. To permit immobilization sponges to be used
C. To lessen radiation publicity to the lens of the attention
D. To put off the want to tilt the gantry so that the axial scan mode may be used - ANS-C. To
lessen radiation publicity to the lens of the attention
A affected person who's scheduled for a CT observe has an abnormal heartbeat with a fee
about 85bpm. For which medical indication is this the most problematic?
A. Coronary artery disease
B. Assessment of ventricular feature
C. Feasible thoracic aortic dissection
D. Assessment of congenital aortic arch anomaly - ANS-A. Coronary artery ailment
A scheme that compresses an photo with none lack of facts while the photo is
decompressed is called:
A. Lossy
B. Fractional coding
C. Scalar and vector quantization
D. Lossless - ANS-D. Lossless
,A volumetric HRCT have a look at refers to a protocol that consists of which of the
subsequent?
A. Thin sections, taken at an c language of 20mm or extra between slices, at some point of
idea, with the affected person in supine function
B. A sampling technique that is intended to provide representative regions of the lung
C. Thins sections, in a helical mode, taken contiguously a good way to cover the entire lung,
throughout proposal with the affected person in a supine function
D. 3 series of thin sections, in helical mode, taken contiguously with a purpose to cowl the
entire lung; collection one is supine inspiratory; series two is supine expiratory; and
collection 3 is susceptible inspiratory - ANS-C. Skinny sections, helical mode, taken
contiguously so that it will cover the entire lung, during idea with the affected person in a
supine role
A water phantom is scanned and several ROI's are placed within the ensuing photograph.
The ROI's located at the fringe of the picture measure otherwise from the ROI's close to the
center. This indicates a trouble with:
A. Linearity
B. Pass area uniformity
C. Noise
D. Low assessment decision - ANS-B. Move field uniformity
A water phantom is scanned and several ROI's are positioned in the ensuing image. The
standard deviation measurements from the ROI's variety from 15-25. What may be stated
approximately the image?
A. It is noisy
B. The spatial decision is 15 to 25lp/cm
C. The low contrast resolution is inside everyday limits
D. The radiation dose is unnecessarily excessive - ANS-A. It's miles noisy
After the injection of an iodinated contrast medium, sufferers with brain metastasis have
extended danger of:
A. Seizures
B. Dehydration
C. Anaphylactoid reaction
D. Renal failure - ANS-A. Seizures
All of the following are key aspects of a exceptional warranty software EXCEPT:
A. The checks that make up this system must be done on a regular foundation
B. All assessments ought to be completed by using a scientific physicist
C. The consequences from all tests ought to be recorded the usage of a steady layout
D. Documentation should indicate whether or not the tested parameter is within targeted
recommendations - ANS-B. All assessments ought to be completed by using a clinical
physicist
All of the following are experiment parameters EXCEPT:
A. MAs
B. Slice thickness
C. Matrix
, D. Pitch - ANS-C. Matrix
All of the subsequent are synonyms for helical scanning except:
A. Volumetric scanning
B. Spiral scanning
C. Non-stop acquisition scanning
D. Dynamic scanning - ANS-D. Dynamic scanning
All of the subsequent are genuine statements concerning patient restraints EXCEPT:
A. The immobilizer should be easy to dispose of speedy if necessary
B. Sufferers are restrained in the main as a convenience for the technologist
C. If leg immobilizers are important, wrist immobilizers need to additionally be carried out
D. A Dr's order is important when a pt is to be restricted towards his will - ANS-B. Sufferers
are limited in general as a comfort for the technologist
All of the subsequent had been upgrades vital to make helical scanning possible besides:
A. Fourth technology scanner layout
B. Gantries with slip ring layout
C. Software the adjusts for desk motion
D. Improved uncooked statistics management - ANS-A. Fourth technology scanner design
All the following are negative aspects of the hand bolus approach of contrast management
EXCEPT?
A. Flow fee is variable
B. Scan postpone can not be exactly managed
C. It requires operators
D.It can not be used for injecting into general PICC traces - ANS-D. It can not be used for
injecting into trendy PICC traces
All the lots of bits of data received by using the CT machine with each test are called?
A. Image data
B. Calibration vectors
C. Raw data
D. Ray sums - ANS-C. Uncooked facts
Although affected person compliance can occasionally be a element, what volume of oral
comparison is typically taken into consideration the minimal quantity needed for a ordinary
CT observe of the abdomen and pelvis?
A. 100ml
B. 400ml
C. 600ml
D. 1500ml - ANS-C. 600ml
An adrenal mass that measures less than or same to 10HU on unenhanced CT:
A. Is an adenoma
B. Is most probably malignant
C. Can be both an adenoma or a malignant mass
D. Is lipid poor - ANS-A. Is an adenoma
