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ASRT Practice Exam 2
ASRT Practice Exam 2
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1
Subject contrast is affected by:
object-to-image distance (OID)
mAs
barium
all of the above
2
Which of the following is a benign tumor arising from Schwann cells of the eighth cranial nerve?
acoustic neuroma
pituitary adenoma
osteoma
multiple myeloma
3
Increasing the kVp from 70 to 80 will result in an increase in all of the following EXCEPT
the quantity of bremsstrahlung photons
the quality of bremsstrahlung photons
the quantity of characteristic photons
the quality of characteristic photons
4
A fluoroscopic exam takes 1 hr & exposure rate is 48 mrem/hr. Patientdose for a procedure time of 30 min would be:
6 mrem
24 mrem
18 mrem
12 mrem
5
Which of the following are cranial bones?
sphenoid, vomer, and temporal
occipital, temporal, and parietal
frontal, occipital, and mandible
palatine, lacrimal, and occipital
6
The bony structure in which the pituitary sits is the ________, which is in the ________ bone.
sella turcica; sphenoid
clivus; sphenoid
cribriform plate; ethmoid
sphenoid strut; ethmoid
7
An individual received 90 mR while standing 4 feet from a source of radiation for 2 minutes.
9; 1
2; 2
4; 1
8; 3
8
All of the following are inappropriate sites for venipuncture
EXCEPT
:
edematous areas
sites above an intravenous access device
arms on the side of a mastectomy
the dorsal side of the wrist
9
The misrepresentation of the size or shape of an object is referred to as:
spatial resolution
smoothing
contrast
distortion
10
When performing IV injections, it is necessary to decrease angle of needle onceflashback is seen in the IV catheter to:
stabilize the vein
avoid puncturing a vein
avoid passing through the vein
release pressure on the vein
11
Which of the following are properties of positive contrast agents?
1, 2, and 3
2 and 3
1 and 2
1 and 3
12
The cumulative timer must be reset every ______ minutes.
2
3
10
5
13
Types of gonadal shielding include all of the following
EXCEPT
:
flat contact
Ferlic filter
shaped (contour) contact
shadow
14
If a patient’s exposure at a distance of 2 meters is 24 mGy, the exposure at 8 meters would be ________ mGy.
18
1.5
12
6
15
Unequal bone/limb growth is an indication for performing a:
scoliosis survey
long-bone measurement study
bone age study
bone survey
16
Which of the following parts is NOT part of a needle?
hub
bevel
cannula
plunger
17
An air-gap technique can be used in place of a grid in some instances because of:
the inverse square law
a heterogeneous beam
anode heel effect
beam divergence
18
A double-contrast examination of the esophagus typically uses________ as the negative contrast medium.
carbon dioxide crystals
barium sulfate
water-soluble iodinated contrast
oxygen
19
The MOST common subcutaneous sites for drug injections are the:
outer thighs and deltoid muscle
deltoid muscle and abdomen
abdomen and outer thighs
gluteal folds and outer thighs
20
The kidneys are located in the:
retroperitoneum
peritoneal cavity
anteroperitoneum
supraperitoneum
21
A radiograph that demonstrates acceptable brightness along one side of the image but NOT on the opposite side represents
grid motion too slow error
off-level grid error
upside-down focused grid error
incorrect grid ratio error
22
A fracture of the distal radius with posterior displacement is a ________ fracture.
Colles
Smith
Bennett
boxer
23
What component is commonly replacing the vidicon camera found in older fluoroscopic units?
image intensifier
plumbicon camera
beam-splitting mirror
charge-coupled device
24
The ________ x-ray interaction is MOST common in the human body.
Compton
characteristic
photoelectric
bremsstrahlung
25
Which of the following radiographic evaluation criterion demonstrates
NO tilt on a PA projection of the chest?
sternal ends of the clavicles equidistant from the vertebral column
scapulae projected outside of the lung field
10 posterior ribs visible above diaphragm
T4 superimposed on the manubrium
26
The degree of needle angulation for venipuncture varies depending on the thickness of the patient’s skin because:
skin thicknesses are affected by age but not weight
the thickness of the subcutaneous tissue varies from patient to patient
the skin of elderly patients can be much harder to puncture
the needle gauge varies to match tissue thickness
27
The central ray angle for an AP axial projection of the foot is:
30o to 45o
15o
10o
0o
28
Which is NOT a feature of fluoroscopy equipment designed specifically to reduceamount of scatter striking personnel?
a protective curtain
a cumulative timer
a Bucky slot cover
collimation
29
The foot is placed on the ________ surface for a lateral projection of the first toe.
medial
plantar
lateral
dorsal
30
An increase in image contrast will result from increasing which of the following?
kVp
focal spot size
SID
OID
31
According to government regulations, the x-ray beam must be within ________ degree(s) of perpendicular.
10
1
2
5
32
Which projection of the chest is used to do the following:
AP axial
lateral
PA oblique
PA
33
Which of the following has the HIGHEST specificity for indicating nonaccidental trauma in pediatric patients?
posterior rib fractures at different stages of healing
a single clavicle fracture status following motor vehicle collision
a single long bone fracture with corresponding accidental history
several fractures with clinical documentation of osteogenesis imperfecta
34
The portion of the anode that stops the stream of electrons during x-ray production is the:
rotor
target
focusing cup
stem
35
Current that flows in only one direction is called _________ current.
alternating
direct
battery
outlet
36
The purpose of the rheostat in the x-ray circuitry is to:
minimize electron repulsion
adjust filament temperature
monitor tube current
alter anode rotation speed
37
The exposure rate for a fluoroscopic study is 2.5 mGy/hr. What is the total exposure for exam with 3 minute fluoro time?
0.075 mGy
0.125 mGy
0.25 mGy
0.75 mGy
38
What instructions for respiration are given to a patient when obtaining a routine PA chest projection?
shallow breathing
normal breathing
full inspiration
full expiration
39
A malignant tumor in the bone is a(n):
enchondroma
Ewing sarcoma
osteosarcoma
chondrosarcoma
40
A ________ is used to assess display monitors.
dose area product (DAP) meter
pinhole camera
Society of Motion Picture and Television Engineers (SMPTE) test pattern
line-pair test tool
41
If a given exposure rate at 48 inches SID is 80 R/min, the rate at 96 inches is ________ R/min.
40
160
20
320
42
If ________ occurs, applying pressure to the injection site can help relieve patient discomfort.
necrosis
redness
scarring
extravasation
43
How many phalanges are located in the foot?
14
15
7
5
44
On a lateral image of the cranium, which of the following structures should be clearly shown?
superimposed orbital roofs greater wings of sphenoid sella turcica profile
cranial base symmetric images of petrosal, foramen ovale, foramen spinosum
dorsum sellae and posterior clinoid processes visible within foramen magnum
orbits filled by the petrous ridges of the temporal bone
45
MOST cell damage from ionizing radiation occurs when x-rays interact with:
free radicals
water molecules
DNA
electrons
46
For a PA projection of the chest, the central ray is adjusted parallel to _______ and enters at the level of ________.
the midcoronal plane; T7
T7; the midcoronal plane
T7; the midsagittal plane
the midsagittal plane; T7
47
The hub of a needle is the:
part that holds the medication
point where the needle attaches to the syringe
beveled portion of the needle
part that changes the pressure within the syringe
48
When applying a topical drug to a patient’s skin, the health care provider should first:
wash his or her hands
explain the entire procedure to the patient
put on gloves
verify patient identification
49
A radiograph demonstrating acceptable brightness in the middle but graduallyincreasing brightness bilaterally represents
incorrect grid ratio error
upside-down focused grid error
off-level grid error
grid motion-failed error
50
All of the following are quality control (QC) tests for photostimulable imaging detectors EXCEPT:
spatial resolution
erasure thoroughness
uniformity
luminance
51
When obtaining a radiograph of third digit on the hand, the central ray entrance point is _______ on the affected digit.
the distal interphalangeal joint
the proximal phalanx
the middle phalanx
the proximal interphalangeal joint
52
An acceptable exposure indicator was achieved using 72 kVp and 20 mAs.
40
10
5
20
53
For a lateral projection of the cranium, the ________ line is perpendicular to the front edge of the image receptor.
glabellomeatal line (GML)
orbitomeatal line (OML)
acanthiomeatal line (AML)
infraorbitomeatal line (IOML)
54
An acceptable image is produced using 72 kVp, 5 mAs, no grid, and 40-inch SID.
20
30
25
15
55
Which of the following factors affects subject contrast?
grids
OID
filtration
mAs
56
The protective booth that the radiographer stands behind when making the x-ray exposure is a ________ barrier.
remnant radiation
useful beam
secondary
primary
57
Filtration affects the primary beam by:
making the primary beam more penetrating
increasing the average energy of the primary beam
decreasing the average energy of the primary beam
increasing the intensity of the primary beam
58
Radiodermatitis is a local tissue effect of the ________ system.
central nervous
integumentary
hematopoietic
gastrointestina
59
Which of the following is the correct circuitry sequence for incoming voltage in a high-frequency generator?
transformer, inverter, capacitor, rectifier, capacitor, rectifier
inverter, rectifier, transformer, capacitor, rectifier, capacitor
rectifier, capacitor, inverter, transformer, rectifier, capacitor
capacitor, transformer, rectifier, inverter, capacitor, rectifier
60
The sampling frequency of an imaging system determines the:
bit depth
pixel size
dynamic range
detective quantum efficiency
61
Which imaging informatics system is a communication network of computers for image acquisition, display, and storage?
health information system (HIS)
radiology information system (RIS)
picture archiving and communications system (PACS)
electronic health record (EHR)
62
All of the following affect patient dose, EXCEPT:
added filtration
source-to-image distance (SID)
inherent filtration
focal spot size
63
A malignant primary tumor of bone is a(n):
osteosarcoma
chondrosarcoma
metastasis
enchondroma
64
When H2O gains an electron it becomes:
H*OH*
HOH=
HOH+
HOH-
65
The device that is responsible for producing the high voltage necessary for x-ray production is the:
transformer
battery
motor
generator
66
The AP axial projection of the C-spine must demonstrate:
levels C1 through C7
levels C3 through T2
the zygapophyseal joints between C1 and C2
levels C1 throughT1
67
The ________ measurement is an average calculated from the gonadal dose received by the entire population
lethal dose (LD) 50/30
effective dose
genetically significant dose
relative biologic effectiveness
68
The speed at which the anode rotates in the rotating anode x-ray tube can be:
2 and 3
1, 2, and 3
1 and 3
1 and 2
69
The active layer of a direct flat panel detector converts:
electrons to light
x-rays to electrons
x-rays to light
light to electrons
70
Which of the following might cause an increase in quantum mottle?
increasing the mAs
decreasing the grid ratio
decreasing the field size
increasing the filament size
71
What change produced the differences in the 2 emission spectra below?
target material
milliampere-seconds (mAs)
filtration
kilovoltage peak (kVp)
72
The AP axial oblique projections of the C-spine demonstrate the ___________ that are ___________ the image receptor.
intervertebral foramina; closest to
zygapophyseal joints; farthest from
intervertebral foramina; farthest from
zygapophyseal joints; closest to
73
All of the following affect tube output EXCEPT:
focal spot size.
kilovoltage peak (kVp)
filtration
target material
74
For a supine abdomen, the central ray enters at the midsagittal plane and:
2 inches above the iliac crests
at the pubic symphysis
at the level of the iliac crests
2 inches below the iliac crests
75
The anode heel effect is most prevalent with a ________ SID and ________ receptor size.
long; small
short; large
long; large
short; small
76
When patient is ambulatory & capable of standing safely, a PA projection of the chest is preferred at upright Bucky with
a 72-inch SID to reduce magnification of the heart
a 72-inch SID to increase OID
a 40-inch SID to increase OID
a 40-inch SID to reduce magnification of the heart
77
A benign tumor consisting of cartilage is a(n):
osteosarcoma
Ewing sarcoma
chondrosarcoma
enchondroma
78
Which of the following bones are part of the orbit?
mandible, maxilla, and frontal
frontal, sphenoid, and occipital
frontal, maxilla, and temporal
palatine, lacrimal, and maxilla
79
Maximum annual exposure for general population is ___ mSv/year, which is ___ thatpermissible for occupationally exposed
0.5; 1/10
500; 1/20
5; 1/10
50; 1/20
80
Esophageal fluoroscopic studies generally begin with the patient in the ________ position.
recumbent
Sims
upright
lithotomy
81
The joint located between the distal and middle phalanx of toes 2-5 is the ________ joint.
distal interphalangeal
proximal interphalangeal
middle interphalangeal
metatarsophalangeal
82
During the ________ stage of gestation, prenatal death can result from exposure to ionizing radiation.
fetal
organogenesis
preimplantation
implantation
83
Which image display monitor works by accelerating electrons toward a fluorescent screen?
cathode ray tube
liquid crystal display
photostimulable phosphor plate
thin-film transistor
84
An increase in the difference between the atomic numbers or densities of adjacent tissues results in increased:
distortion
spatial resolution
receptor exposure
subject contrast
85
A 10-year-old girl comes to the radiology department for scoliosis evaluation.
anteroposterior
left anterior oblique
right posterior oblique
posteroanterior
86
Which of the following statements is TRUE?
LET and RBE have no correlation to each other
Low RBE radiation has a high LET
High LET radiation has a high RBE
Low LET radiation has a high RBE
87
Drugs that are administered intramuscularly require that the needle be inserted at a ________ angle.
45o
15o
30o
90o
88
Which of the following is NOT an advantage of beam restriction?
need to irradiate less biologic material
improved image contrast
reduced scatter radiation production
need for less total filtration
89
A malignant tumor arising from cartilage cells is a(n):
chondrosarcoma
osteosarcoma
Ewing sarcoma
enchondroma
90
Which of the following are important components in documenting drug administration?
1 and 3
2 and 3
1, 2, and 3
1 and 2
91
The ________ of the syringe holds the medication for injection.
bevel
barrel
plunger
cap
92
A requisition states that patient is blind. When providing instructions for a chestradiograph, the technologist should:
skip the explanation and try to complete the exam as quickly as possible
proceed with the examination, pantomiming instructions to the patient
speak loudly so the patient can hear
ask the patient how they would like to receive instructions
93
The recommended source-to-image distance (SID) for a lateral projection of the C-spine is ________ inches.
30
40
60 to 72
44 to 48
94
A fracture at the base of the first metacarpal is a ________ fracture.
Colles
Smith
boxer
Bennett
95
The temporal mandibular joint (TMJ) is a ________ joint.
fibrous suture
synovial suture
synovial hinge and gliding
fibrous hinge and gliding
96
A patient develops erythema in the shape of the exposure field following an interventional procedure.
respondeat superior
borrowed servant
res ipsa loquitur
beneficence
97
Which of the following radiographic evaluation criterion demonstrates NO rotation on a PA projection of the chest?
sternal ends of the clavicles equidistant from the vertebral column
10 posterior ribs visible above diaphragm
T4 superimposed on the manubrium
scapulae projected outside of the lung field
98
An increase in ________ will decrease image contrast.
kVp
sampling frequency
object-to-image distance (OID)
bit depth
99
The central ray enters the ________ when performing an AP axial projection of the toes.
head of the first metatarsal
third metacarpophalangeal joint
distal interphalangeal joint of the third phalanx
third metatarsophalangeal joint
100
It would be inappropriate to refer to a patient who is over 65 years old as “geriatric” because:
the label applies only to those who are older than 75 years
it can make the person feel alienated and disrespected
the person might not look 65 years old
geriatric refers to the study of aging, not populations