CT Registry Review || QUESTIONS AND ANSWERS 100% VERIFIED!!
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Course
CT Registry
Institution
CT Registry
An average range for activated PTT is? correct answers 25-35 seconds
What is the correct angle of insertion for placing a butterfly needle into a vein for intravenous administration of a contrast media? correct answers 15 degrees
A total volume of 125 mls of an iodinated contrast agent is adm...
CT Registry Review || QUESTIONS AND ANSWERS
100% VERIFIED!!
An average range for activated PTT is? correct answers 25-35 seconds
What is the correct angle of insertion for placing a butterfly needle into a vein for intravenous
administration of a contrast media? correct answers 15 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? correct answers 2.5
mL/sec
The acronym CTDI is used to describe what? correct answers 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? correct answers 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)?
correct answers Age, sex, and race
Which intravenous contrast agent administration methods provides the greatest overall
plasma iodine concentration? correct answers Bolus Technique
A patient in shock may exhibit which of the following symptoms? correct answers
Tachycardia, cyanosis, rapid, and shallow breaths.
The drug SOLU-CORTEF may be classified as what? correct answers Corticosteriod
What technical factor has a direct effect on patient dose? correct answers mAs
What is an example of a non-ionic contrast material? correct answers Iohexol (Omnipaque)
What term is used to describe a patient who is having difficulty breathing? correct answers
Dyspnea
What device is used to measure the patient dose from a CT examination? correct answers
Ionization Chamber
What describes the situation in which an assumption is made that an unconscious or
otherwise physically unable patient consents to medical treatment? correct answers Implied
Consent
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an
electrocardiogram (ECG)? correct answers T Wave
During CT arthrography, iodinated contrast media is injected directly into the? correct
answers joint space.
,What is one example of the iso-osmolar contrast media (IOCM)? correct answers Iodixanol
(Visipaque)
A common site for the IV administration of iodinated contrast media is the anterior recess of
the elbow, otherwise known as: correct answers antecubital space.
The potentially serious decline in renal function following the IV administration of contrast
material is called: correct answers contrast-induced nephrotoxicity (CIN)
The quantity of absorbed radiation dose based on the radiosensitivity of a particular tissue
type is called? correct answers Effective dose
Advantages of a saline flush immediately following the IV administration of iodinated
contrast media include: correct answers Reduction 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? correct answers Sublingual Nitroglycerine
A normal range for diastolic blood pressure in an adult is? correct answers 60-90 mm Hg
What is an example of a parenteral route of medication administration? correct answers
Intramuscular
What method may be employed to reduce the radiation dose to the pediatric patient
undergoing a CT? correct answers Reduce mA, limit phases of acquisition, and increase
pitch.
Radiation exposure and its potentially harmful effects have a relationship that is termed....
correct answers stochastic in nature.
What type of isolation techniques protects against infection transmission through fecal
material? correct answers Enteric Precautions
What is an example of one of the ionic radiopaque contrast media (RCM)? correct answers
Iothalamate 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? correct answers CTDIW
Direct contraindications to the administration of iodinated contrast media include: correct
answers Prior life-threatening reactions to iodinated contrast media.
What unit is used to express the total patient dose from a helically acquired CT examination?
correct answers mGy-cm (milligrays per centimeter)
, Components of a comprehensive CT stroke management protocol typically include: correct
answers CT 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: correct
answers 0 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? correct answers 25-35 seconds
The abdominal aorta bifurcates at the level of? correct answers L4
On an ECG of the complete cardiac cycle, at which portion of the R-R interval is the heart
muscle in diastole? correct answers 55% to 75%
The accumulation of gas within a degenerating intervertebral disc is called? correct answers
Vacuum Phenomenon
During a spiral or helical CT exam, the scanning acquires data? correct answers Continuously
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? correct
answers CT 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"? correct answers Excretory
What section width and spacing would be most suitable for a general survey of a CT neck?
correct answers 3 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? correct answers Ischemic Penumbra
Complex fractures of the wrist are most common in which carpal bone? correct answers
Scaphoid
A complete CT study of the orbits should include: correct answers 2.5 mm x 2.5 mm axial
and coronal sections
High-resolution computed tomography (HRCT) is most commonly used for the evaluation of
the... correct answers lungs.
What technical maneuvers may be used to remove unwanted pulsation artifacts from cardiac
motion during a CTA of the chest for a PE? correct answers Retrospective ECG Gating
During a general CT exam of the abdomen, an intravenous contrast is indicated and is
administered with the aid of an automatic injector. What rate should be used? correct answers
1.0-3.0 mL/sec
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