DIFFERENTIAL MRI/CT/ORTHO EXAM
QUESTIONS 100% CORRECT ANSWERS
Ultrasound - ✔✔This uses sound waves to take pictures of the body
X Ray - ✔✔This uses radiation to take pictures of the body
Saggital - ✔✔This view divides into right and left planes
Coronal - ✔✔This view divides into front and back planes
Axial - ✔✔This view divides into upper and lower planes, always viewed from the feet
Imaging orientation - ✔✔ This consideration takes into account radiologist versus patient.
Opposite!!
CT scan - ✔✔This imaging uses X-ray and a computer, viewed in slices
Hyperdensity - ✔✔This is "bright", typically hemorrhages and calcifications
Hypodensity - ✔✔This is "dark", typically edema and infarction
Acute bleed - ✔✔This type of bleed is Hyperdense, white
Subacute bleed - ✔✔This type of bleed is isodense (same color as brain tissue
Chronic bleed - ✔✔This type of bleed is hypodense (dark)
,Isodense to hypodense - ✔✔Density progression of an ischemic stroke
Brain, bone, subdural - ✔✔What are the 3 windows of a head CT?
Fracture - ✔✔The bone window of a head CT shows what?
Bleeding - ✔✔The subdural window of a head CT shows what?
Symmetry - ✔✔When reading CTs important to look for what?
CT - ✔✔This is the top choice for emergency imaging
CT - ✔✔This is the most effective imaging for bone and soft tissues
Odontoid - ✔✔The clivius points toward the:
Burst Fracture - ✔✔This type of fracture has anterior AND middle column compression
Compression Fracture - ✔✔This type of fracture has only anterior column compression
Contrast Enhancing - ✔✔ Improvement of visibility of an area in a CT scan
Carbon Dioxide - ✔✔This contrast agent is a negative contrast agent, displacing blood
when injected IV.
Barium - ✔✔This contrast agent doesn't dissolve. Used GI only and leaves in the feces.
, Iodinated - ✔✔These contrast agents are clear, colorless, water solutions. Must use
caution w/renal function
1 hour before contrast administration - ✔✔Premedication before contrast administration
should be administered when?
Methylprednisone or Prednisone - ✔✔Contrast premedication options
Pregnancy, Hx of reaction, chronic or acute renal disease, thyroid tx w/radioactive iodine
- ✔✔Contrast contraindications
Documented anaphylaxis to any medication - ✔✔ A patient with
____________________________ is at higher risk for a reaction to iodinated contrast.
Non-Contrast CT - ✔✔Head trauma, acute stroke, spine trauma, extremity trauma,
abdomen (renal stones), diffuse lung disease... What kind of CT??
With & Without Contrast CT - ✔✔Acute appendicitis, cancer staging, diverticulosis,
pancreatitis, pulmonary embolism... What kind of CT??
Non-contrast CT - ✔✔For a disease looking for calcification, you would order what kind
of CT?
CTA - ✔✔This type of CT is used to look at blood vessels.
Nothing, this is normal. - ✔✔Your patient c/o feeling warm all over when the contrast
agent is administered. What do you do?
CTA - ✔✔This test is ordered to rule out PE and renal artery stenosis, to identify
aneurysms, identify aortic dissection, AV malformation, detect PAD, and exclude CAD
QUESTIONS 100% CORRECT ANSWERS
Ultrasound - ✔✔This uses sound waves to take pictures of the body
X Ray - ✔✔This uses radiation to take pictures of the body
Saggital - ✔✔This view divides into right and left planes
Coronal - ✔✔This view divides into front and back planes
Axial - ✔✔This view divides into upper and lower planes, always viewed from the feet
Imaging orientation - ✔✔ This consideration takes into account radiologist versus patient.
Opposite!!
CT scan - ✔✔This imaging uses X-ray and a computer, viewed in slices
Hyperdensity - ✔✔This is "bright", typically hemorrhages and calcifications
Hypodensity - ✔✔This is "dark", typically edema and infarction
Acute bleed - ✔✔This type of bleed is Hyperdense, white
Subacute bleed - ✔✔This type of bleed is isodense (same color as brain tissue
Chronic bleed - ✔✔This type of bleed is hypodense (dark)
,Isodense to hypodense - ✔✔Density progression of an ischemic stroke
Brain, bone, subdural - ✔✔What are the 3 windows of a head CT?
Fracture - ✔✔The bone window of a head CT shows what?
Bleeding - ✔✔The subdural window of a head CT shows what?
Symmetry - ✔✔When reading CTs important to look for what?
CT - ✔✔This is the top choice for emergency imaging
CT - ✔✔This is the most effective imaging for bone and soft tissues
Odontoid - ✔✔The clivius points toward the:
Burst Fracture - ✔✔This type of fracture has anterior AND middle column compression
Compression Fracture - ✔✔This type of fracture has only anterior column compression
Contrast Enhancing - ✔✔ Improvement of visibility of an area in a CT scan
Carbon Dioxide - ✔✔This contrast agent is a negative contrast agent, displacing blood
when injected IV.
Barium - ✔✔This contrast agent doesn't dissolve. Used GI only and leaves in the feces.
, Iodinated - ✔✔These contrast agents are clear, colorless, water solutions. Must use
caution w/renal function
1 hour before contrast administration - ✔✔Premedication before contrast administration
should be administered when?
Methylprednisone or Prednisone - ✔✔Contrast premedication options
Pregnancy, Hx of reaction, chronic or acute renal disease, thyroid tx w/radioactive iodine
- ✔✔Contrast contraindications
Documented anaphylaxis to any medication - ✔✔ A patient with
____________________________ is at higher risk for a reaction to iodinated contrast.
Non-Contrast CT - ✔✔Head trauma, acute stroke, spine trauma, extremity trauma,
abdomen (renal stones), diffuse lung disease... What kind of CT??
With & Without Contrast CT - ✔✔Acute appendicitis, cancer staging, diverticulosis,
pancreatitis, pulmonary embolism... What kind of CT??
Non-contrast CT - ✔✔For a disease looking for calcification, you would order what kind
of CT?
CTA - ✔✔This type of CT is used to look at blood vessels.
Nothing, this is normal. - ✔✔Your patient c/o feeling warm all over when the contrast
agent is administered. What do you do?
CTA - ✔✔This test is ordered to rule out PE and renal artery stenosis, to identify
aneurysms, identify aortic dissection, AV malformation, detect PAD, and exclude CAD
