CAMRT Exam (484 Questions) With 100% Correct And Verified Answers
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CAMRT Exam (484 Questions) With 100% Correct And Verified Answers
What is the central ray for an AP axial coccyx?
ANS: Angle 10 degrees caudad
What does ERCP stand for and what is it done for?
ANS: Endoscopic Retrograde Cholangiopancreatography; used to diagnose biliary and pancreatic pat...
CAMRT Exam (484 Questions) With 100%
Correct And Verified Answers
What is the central ray for an AP axial coccyx?
ANS: Angle 10 degrees caudad
What does ERCP stand for and what is it done for?
ANS: Endoscopic Retrograde Cholangiopancreatography; used to diagnose biliary
and pancreatic pathologies when the biliary ducts are not dilated and no obstruction
exists in the ampulla
What do Flexion/Extension views of the Cervical Spine assess?
ANS: AP motility of the cervical spine, or lack of movement due to trauma or disease
In SC35, what is the limit for light field and x-ray field alignment?
ANS: Must not exceed 2% of the SID
Why do we do a ball catcher's view?
ANS: Assist in detecting early radiologic changes needed to diagnose rheumatoid
arthritis
What is Orthostatic Hypotension?
ANS: Low blood pressure due to standing upright (dizziness after getting up from a
supine position)
What is the difference between Germicide and Disinfectant?
ANS: Germicide is a solution that destroys microorganisms; Disinfectant is a type of
germicide that inhibits the growth of bacteria
Which carpal bone is most commonly fractured?
ANS: Scaphoid
What is the difference between Lauenstein and cross-table lateral views of the hip?
ANS: Lauenstein=lesser trochanter in profile medially and femoral neck
superimposes greater trochanter
Cross-table Lateral=femoral neck demonstrated without overlap from greater
trochanter and a small amount of the lesser trochanter on the posterior surface of
the femur demonstrated in profile
Why do we include anterior soft tissue on a trauma cross-table lateral of the c-spine?
ANS: Allows accurate measurement for any type of vertebral displacement or
noticeable swelling that could suggest a disguised fracture
,When imaging the intercondylar fossa, which body part is perpendicular to the
central ray?
ANS: The long axis of the lower leg
What is the purpose of lateral bending for scoliosis imaging? ANS: Employed in
patients with early scoliosis to determine the presence of structural change when
bending to the right and left (compensatory curve will correct itself on one of these
images), as well predict or assess degree of correction that can be obtained
What is the optimal kV for a chest x-ray and why? - ANS: 110-125 kV sufficiently
penetrates the heart shadow and visualizes the thoracic vertebrae as well as
provides the long scale of contrast necessary to visualize lung details
When doing a portable chest x-ray, how do you adjust the central ray for a kyphotic
patient? - ANS: Angle less (closer to perpendicular) slightly or leave the tube
perpendicular so clavicles will be 1" below apices of lung
Why is a CT study for PE scanned from from abdomen to just above shoulders? - ANS:
To help reduce artifact of the contrast when the initial injection is given because of
the large amount of contrast that will be entering the superior vena cava before the
coronary arteries
What type of medication may be administered to a patient prior to a contrast study
to prevent a reaction? - ANS: Steroids and antihistamines (Benadryl, Medrol)
What is Spatial Resolution? - ANS: The ability of an imaging process to distinguish
small, adjacent, high-contrast structures in the object
What should you do if a nurse forgets to chart a medication during an Intravenous
pyelogram (IVP)? - ANS: Bring any omissions to their attention - any item that has
not been documented on the chart is
considered to be "not performed" in a court of law
What does penumbra effect? - Recorded detail
What is the Line Focus Principle? - ANS: Through angling the target, the effective
area of the target is made much smaller than the actual area of electron interaction
(smaller anode angle=smaller effective focal spot, larger anode angle=larger
effective focal spot)
How do you know if an oblique image of the L-spine is over-rotated? - ANS: The
pedicles sit too far posterior on vertebral bodies (Remember: ***PP, too
much***=posterior pedicles)
What is a PICC line? What is its position and purpose? - ANS: Peripherally Inserted
Central Catheter; placed in brachiocephalic vein at the junction of the SVC or actually
,within the SVC itself; used for measuring central venous pressure as well as allowing
nutrients and fluid to be instilled
What is the position and purpose of a Swan-Ganz catheter? - ANS: Placed in right or
left pulmonary artery; used to measure wedge pressure, central venous pressure,
systolic, diastolic, and mean pressure, to withdraw blood samples, and to inject
drugs or administer fluids
What are the three layers of mater surrounding the brain? - ANS: From outer to
inner: Dura, Arachnoid, and Pia
What is the appearance of a subdural hematoma on a CT (acute and chronic) and the
likely cause of one? - ANS: Acute subdural hematoma will have a crescent-shaped
peripheral high-density lesion; Chronic
Subdural hematoma appears as an isodense lesion; They usually result from trauma,
and is venous
bleeding from ruptured veins between the dura and meninges
What is the pathology demonstrated in the CT head image? - ANS: Glioma
(Glioblastoma)
What is the pixel value for a detector of 18? - ANS: 2^18 = 262144. (The pixel value
formula is 2^x, where x is the number given)
Why should scoliosis images be performed PA? - ANS: To reduce radiation exposure
to selected radiosensitive organs
Why is an ERCP exam contraindicated if the patient has a pancreatic pseudocyst? -
ANS: A pseudocyst is a dilated space, resembling a cyst, with a collection of fluid and
necrotic debris. The biliary and digestive systems can become compressed with
some cysts, thus using a scope to enter the ducts could cause a hemorrhage or
rupture of the cyst if the scope were to accidently hit or penetrate the cyst. On that
note, the injection of x-ray contrast is contraindicated and would NOT be used as the
fluid will collect and as well could rupture the cyst
What is demonstrated on a 15-degree occipitofrontal view of the sinuses? - ANS:
Frontal sinuses lying superior to the frontonasal suture, anterior ethmoidal air cells
lying on each side of the nasal fossas and immediately inferior to the frontal sinuses,
sphenoid sinuses projected through the nasal fossas just inferior to or in between
the ethmoid air cells, and petrous ridges lying in the lower third of the orbits
What is the difference between Spondylolysis and Spondylolisthesis? - ANS:
Spondylolysis=the breaking down of a vertebra, or replacement of a portion of the
vertebral arch with cartilage; refers to a defect in the pars interarticularis without
displacement; Spondylolisthesis=forward displacement of a vertebra over a lower
segment, usually of the 4 th or 5 th lumbar, frequently due to spondylolysis
, What is a Bennett's Fracture? - ANS: Oblique fracture of the base of the first
metacarpal, possibly with proximal and lateral subluxation of metacarpal shaft that
extends into first carpometacarpal joint; usually caused by FOOSH
What is a Pott's Fracture? - ANS: Fracture of the ankle, involving the malleoli: First
degree Pott's=fractures involving one malleolus, Second degree Pott's
(bimalleolar)=fractures involving both malleoli, Third degree Pott's
(trimalleolar)=bimalleolar fracture with a fracture of the posteroinferior surface of
the tibia
What is a Compound Fracture? - ANS: A wound in communication with the fracture;
susceptible to infection; blood loss may be significant
Explain what a comminuted fracture is and the two different types. - ANS: Fracture
with more than two bone fragments; Segmental=divides the long bone into several
fragments; Butterfly=wedge-shaped fragment split off from the main fragment
What is considered the Sterile Corridor? - ANS: The area in the operating room
between the patient drape and the instrument table
How should the lower extremity be rotated for an AP projection of the proximal
femur? - ANS: 15 degrees internally
What part of the gown is considered sterile in the OR? - ANS: From the waist to the
shoulders in the front, and the sleeves from 2" above the elbow to the cuffs
What does COW stand for? - ANS: Circle of Willis
What is number 1 in the picture? - ANS: Anterior Cerebral Artery
Study the Circle of Willis -
Describe the hip localization method - ANS: Imagine a line from the ASIS to
symphysis pubis and at midpoint of that line, imagine a perpendicular line, moving
1.5" distally to locate the femoral head. This perpendicular line will also aid in
judging the angle of the femoral neck. The two will be exactly the same
What is the central ray for an AP knee image on patient who is considered to have a
sthenic body habitus? - ANS: Perpendicular to the knee joint
What is included on a CT head? - ANS: From base of skull to cranial vertex
Which vessel ascends through the cervical transverse foramina? - ANS: Vertebral
artery
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