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17 Cards in this Set
- Front
- Back
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A delay of about ____ seconds after the start of the IV contrast injection should be used for a helical scan of the chest.
a. 45 b. 35 c. 25 d. 15 |
c. 25
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Which of the following is a typical scan delay following the start of the injection for helical CT exams of the pancreas?
a. 50 to 60 seconds b. 70 to 80 seconds c. 80 to 90 seconds d. 2 to 3 minutes |
a. 50 to 60 seconds
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Exams to rule out ______________ would indicate the use of IV contrast media in the chest.
1. lymphoma 2. hilar mass 3. aortic dissection a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
d. 1, 2 & 3
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To best visualize the stomach wall, which of the following should the patient drink last?
1. iodinated oral contrast media 2. water 3. barium sulfate oral contrast a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
b. 2 only
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How long does it take to inject 150 mL of contrast media with an injection rate of 2 mL/sec.?
a. 50 seconds b. 75 seconds c. 1 minute d. 2.5 minutes |
b. 75 seconds
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The heating unit on a power injector is for ______________ of the contrast agent.
a. increasing the iodine concentration b. decreasing the viscosity c. increasing the density d. decreasing the osmolality |
b. decreasing the viscosity
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What should be done if extravasation is noticed at the injection site?
a. apply ice during the injection b. stop the injection immediately c. slap the area d. apply heat during the injection |
b. stop the injection immediately
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Which of the following characteristics of an IV contrast agent affects patient tolerance?
1. concentration of iodine 2. osmolality 3. viscosity a. 1 only b. 1 & 2 c. 2 & 3 d. 1 & 3 |
d. 1 & 3
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Contrast agents containing barium sulfate:
1. enhance structures because they are absorbed into the blood stream 2. enhance structures because they are absorbed through the small intestine 3. pass through the GI tract unchanged a. 1 only b. 2 only c. 3 only d. 1 & 2 |
c. 3 only
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An indication for IV contrast injection is to rule out:
a. mastoiditis b. sinusitis c. meningioma d. grave's disease |
c. meningioma
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When a contrast agent is injected directly into the joint space it is known as _______________ contrast
a. intravenous b. intrathecal c. oral d. intraarticular |
d. intraarticular
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Which of the following is TRUE regarding ionic contrast agents?
1. ionic agents are charged ions 2. ionic agents dissociate into ions in solution 3. ionic agents ionize tissues they contact a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
b. 2 only
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The contrast between a lesion and the surrounding tissue may __________________ following the injection of contrast media.
1. improve 2. remain unchanged 3. be degraded a. 1 only b. 2 only c. 3 only d. 1, 2 & 3 |
d. 1, 2 & 3
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Which of the following is the order in which the phases of IV contrast enhancement occur?
a. bolus, equilibrium, non-equilibrium b. equilibrium, non-equilibrium, bolus c. bolus, non-equilibrium, equilibrium d.non-equilibrium, equilibrium, bolus |
c. bolus, non-equilibrium, equilibrium
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An injection rate of _____cc/sec. will maintain a dense bolus of IV contrast media for a CTA exam and will be tolerated by most patients.
a. 8-10 b. 7-8 c. 4-5 d. 1-2 |
c. 4-5
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A CT study of the brain to visualize MS plaques may be made more sensitive by using _________ delay after the contrast agent has been injected.
a. no b. a 10 second c. a 60 second d. a 45 minute |
d. a 45 minute
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What is the appropriate care to give to a patient with diabetes?
1. if IV contrast media is required, use LOCM 2. if the patient is using Metformin, advise them to stop its use 48 hours BEFORE IV contrast is administered 3. if the patient is using Metformin, advise them to resume its use 48 hours after IV contrast administration only after kidney function has been reassessed and determined to be normal a. 1 only b. 1 & 2 c. 2 & 3 d. 1 & 3 |
d. 1 & 3
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