QUESTIONS AND CORRECT ANSWERS
stomach examinations using barium sulfate have some degree of risk for patients who are: -
CORRECT ANSWERS✅✅sedated
mentally handicapped
potentially hypovolemic
laboratory tests to assess a patient's BUN and creatine are used to determine the patient's: -
CORRECT ANSWERS✅✅renal function
negative contrast agents: - CORRECT ANSWERS✅✅have low atomic numbers
when using any type of contrast agent for a radiographic examination: - CORRECT
ANSWERS✅✅a thorough medical history must be taken by the imaging professional
an air-contrast colon study would be an example of: - CORRECT ANSWERS✅✅a high contrast
examination
the use of both a negative and a positive contrast agent on the same image
a barium sulfate and air examination
a key distinction between radiographic studies and nuclear studies using radiopharmaceuticals
is that: - CORRECT ANSWERS✅✅nuclear studies are generally more functional in nature
radiographic examinations are more structural in nature
both studies use ionizing radiation
positive contrast agents: - CORRECT ANSWERS✅✅have high atomic numbers
,appear white on radiographs because of the degree of attenuation
have a tendency to absorb xray photon energy to a great extent
as a contrast medium iodine: - CORRECT ANSWERS✅✅is radiopaque
can cause adverse reactions when injected
a radioparmaceutical is: - CORRECT ANSWERS✅✅a radioactive material used for nuclear
imaging with a gammacamera
barium sulfate would be contraindicated for a patient with: - CORRECT ANSWERS✅✅a
suspected duodenal bulb perforation
when a nonionic contrast agent is injected into an artery such as the carotid, visualization of the
artery occurs because: - CORRECT ANSWERS✅✅iodine in the contrast agent mixes with
blood and makes the artery radiopaque
nonionic low-osmolality contrast agents have gained tremendous popularity with physicians as
a safer choice for iodine contrast examinations. it is important to remember that nonionics: -
CORRECT ANSWERS✅✅still pose a risk to renal function
air is an example of a ____ contrast medium. - CORRECT ANSWERS✅✅negative
the perfect iodinated contrast agent would have what characteristics? - CORRECT
ANSWERS✅✅low osmolality
nonionic chemical structure
low toxicity to patient
, contrast agents can be generally classified as: - CORRECT ANSWERS✅✅positive and negative
after the injection of an ionic iodinated contrast agent into a patient for a renal study, the
patient complains of a warm feeling and is starting to itch. you notice the patient is developing
large hives. as you monitor the patient, you should: - CORRECT ANSWERS✅✅closely monitor
the patient and look for woersening signs such as vomiting and bronchospasm
monitor the patient for increased number or size of hives
nonionic iodine contrast agents differ from ionic agents in that nonionics: - CORRECT
ANSWERS✅✅do not break down into a cation and an anion
the responsible medical imagingprofessional will always maintain his or her focus on patients,
particularly when any contrast agent is administered. a mandatory prerequisite to these studies
is always: - CORRECT ANSWERS✅✅a thorough medical history including allergies and
diseases
the osmotic effects of ionic contrast agents are a result of the movement of: - CORRECT
ANSWERS✅✅water form the body's cells into the bloodstream, causing increased blood
volume and higher blood pressure
the atomic number of soft tissue on average is; - CORRECT ANSWERS✅✅7
the use of contrast material as a means for visualizing human anatomy has a long history.
regardless of the type of contrast media, the purpose for using contrast media is to: - CORRECT
ANSWERS✅✅enhance the low subject contrast of anatomic structures
anatomic tissue with a high atomic number will absorb___xray photons - CORRECT
ANSWERS✅✅more