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CT Registry Review Exam
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CT Registry Review ExamAn average range for activated PTT is? - answer25-35 seconds
What is the correct angle of insertion for placing a butterfly needle into a vein for
intravenous administration of a contrast media? - answer15 degrees
A total volume of 125 mls of an iodinated contrast agent is administered intravenously
via automatic injector in 50 seconds. The flow rate for this injection is? - answer2.5
mL/sec
The acronym CTDI is used to describe what? - answer The radiation dose to the patient
during a CT scan.
While one is obtaining a thorough history from a patient prior to the intravenous injection
of an iodinated contrast material, what topics should be included? - answer Any prior
allergic reactions to contrast media and a history of asthma.
What are three factors that may affect a patient's calculated glomerular filtration rate
(GFR)? - answer Age, sex, and race
Which intravenous contrast agent administration methods provides the greatest overall
plasma iodine concentration? - answer Bolus Technique
A patient in shock may exhibit which of the following symptoms? - answer Tachycardia,
cyanosis, rapid, and shallow breaths.
The drug SOLU-CORTEF may be classified as what? – answer Corticosteroid
What technical factor has a direct effect on patient dose? – answer mAs
What is an example of a non-ionic contrast material? – answer Iohexol (Omnipause)
What term is used to describe a patient who is having difficulty breathing? -
answerDyspnea
What device is used to measure the patient dose from a CT examination? -
answerIonization Chamber
What describes the situation in which an assumption is made that an unconscious or
otherwise physically unable patient consents to medical treatment? - answerImplied
Consent
,Complete cardiac diastole corresponds to which portion of the cardiac cycle on an
electrocardiogram (ECG)? - answerT Wave
During CT arthrography, iodinated contrast media is injected directly into the? -
answerjoint space.
What is one example of the iso-osmolar contrast media (IOCM)? - answerIodixanol
(Visipaque)
A common site for the IV administration of iodinated contrast media is the anterior
recess of the elbow, otherwise known as: - answerantecubital space.
The potentially serious decline in renal function following the IV administration of
contrast material is called: - answercontrast-induced nephrotoxicity (CIN)
The quantity of absorbed radiation dose based on the radiosensitivity of a particular
tissue type is called? - answerEffective dose
Advantages of a saline flush immediately following the IV administration of iodinated
contrast media include: - answerReduction in required contrast agent dose, reduction in
the incidence of contrast-induced nephrotoxicity (CIN) and reduction of streaking
artifacts from dense contrast agents in the vasculature.
What medication may be administered to dilate the coronary vasculature prior to a
cardiac CT examination? - answerSublingual Nitroglycerine
A normal range for diastolic blood pressure in an adult is? - answer60-90 mm Hg
What is an example of a parenteral route of medication administration? -
answerIntramuscular
What method may be employed to reduce the radiation dose to the pediatric patient
undergoing a CT? - answerReduce mA, limit phases of acquisition, and increase pitch.
Radiation exposure and its potentially harmful effects have a relationship that is
termed.... - answerstochastic in nature.
What type of isolation techniques protects against infection transmission through fecal
material? - answerEnteric Precautions
What is an example of one of the ionic radiopaque contrast media (RCM)? -
answerIothalamate Meglumine (Conray)
The radiation dose index calculation that takes into account the variations in absorption
across the field of view due to beam hardening is termed? - answerCTDIW
, Direct contraindications to the administration of iodinated contrast media include: -
answerPrior life-threatening reactions to iodinated contrast media.
What unit is used to express the total patient dose from a helically acquired CT
examination? - answermGy-cm (milligrays per centimeter)
Components of a comprehensive CT stroke management protocol typically include: -
answerCT perfusion of the brain, CTA of the carotids and brain, and pre-contrast
sequence of the brain.
Simple cysts of the kidney have an average attenuation values in the range of: -
answer0 to +20 Hounsfield Units
After initiation of rapid bolus administration of an iodinated contrast agent, the arterial
phase of hepatic contrast enhancement occurs at approximately? - answer25-35
seconds
The abdominal aorta bifurcates at the level of? - answerL4
On an ECG of the complete cardiac cycle, at which portion of the R-R interval is the
heart muscle in diastole? - answer55% to 75%
The accumulation of gas within a degenerating intervertebral disc is called? -
answerVacuum Phenomenon
During a spiral or helical CT exam, the scanning acquires data? - answerContinuously
as the patient travels through the gantry and in the form of a complete volumetric data
set.
What CT studies of the head are typically performed without a contrast agent? -
answerCT of the brain to R/O subdural hematoma.
What is the termed used to describe "renal contrast enhancement best demonstrates
transitional cell carcinoma of the bladder"? - answerExcretory
What section width and spacing would be most suitable for a general survey of a CT
neck? - answer3 mm thick every 3 mm
The still viable ischemic cerebral tissue that surrounds the infarct core in a patient with
an acute stroke is termed? - answerIschemic Penumbra
Complex fractures of the wrist are most common in which carpal bone? -
answerScaphoid
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