Question 1

Intravascular ROCM:

Accepted Answer

A)  have high percentage lipid (fat) solubility. 
B)  consist of large molecules. 
C)  do not cross cellular membranes well. 
D)  a and b. 
E)  b and c. 
A)  have high percentage lipid (fat) solubility. 
B)  consist of large molecules. 
C)  do not cross cellular membranes well. 
D)  a and b. 
E)  b and c. E

Question 2

Why are the tissues in question 1 particularly low contrast?

Accepted Answer

A)  They tend to be lower in atomic number than other, more easily visualized tissues. 
B)  They tend to have less mass density than some other tissues. 
C)  They tend to lie deeper within body cavities. 
D)  a and b. 
E)  b and c. 
A)  They tend to be lower in atomic number than other, more easily visualized tissues. 
B)  They tend to have less mass density than some other tissues. 
C)  They tend to lie deeper within body cavities. 
D)  a and b. 
E)  b and c. D

Question 3

____ ROCM are supplied in nonsalt forms.

Accepted Answer

A)  High-osmolality ionic 
B)  Low-osmolality nonionic 
C)  Low-osmolality ionic 
D)  a and b 
E)  b and c 
A)  High-osmolality ionic 
B)  Low-osmolality nonionic 
C)  Low-osmolality ionic 
D)  a and b 
E)  b and c B

Question 4

Diatrizoate meglumine and diatrizoate sodium solutions are:

Accepted Answer

A)  generally used when barium sulfate suspension is potentially harmful. 
B)  used when low osmolality is desired. 
C)  preferred over barium sulfate suspension in CT because of less artifact production. 
D)  a and b only. 
E)  a and c only. 
A)  generally used when barium sulfate suspension is potentially harmful. 
B)  used when low osmolality is desired. 
C)  preferred over barium sulfate suspension in CT because of less artifact production. 
D)  a and b only. 
E)  a and c only.

Question 5

Patients with renal impairment:

Accepted Answer

A)  demonstrate opacified biliary and GI tracts when given intravascular ROCM. 
B)  eliminate as much as 100% of intravascular ROCM within 24 hours. 
C)  exhibit higher opacification in the kidneys. 
D)  a and c. 
E)  all of the above. 
A)  demonstrate opacified biliary and GI tracts when given intravascular ROCM. 
B)  eliminate as much as 100% of intravascular ROCM within 24 hours. 
C)  exhibit higher opacification in the kidneys. 
D)  a and c. 
E)  all of the above.

Question 6

Iodine molecules are responsible for the silhouette images projected on radiographic film because they:

Accepted Answer

A)  absorb photons. 
B)  allow more photons to pass through for projection onto the radiograph. 
C)  act as a form of barium by preventing or slowing the dilution of osmotic particles. 
D)  prevent fluid in extravascular spaces from being drawn into the bloodstream. 
E)  c and d. 
A)  absorb photons. 
B)  allow more photons to pass through for projection onto the radiograph. 
C)  act as a form of barium by preventing or slowing the dilution of osmotic particles. 
D)  prevent fluid in extravascular spaces from being drawn into the bloodstream. 
E)  c and d.

Question 7

The newer low-osmolality ionic ROCM:

Accepted Answer

A)  contain three iodine atoms per molecule and do not dissociate in solution. 
B)  are referred to as ratio-1.5 media. 
C)  are considered to be ratio-3.0 media. 
D)  a and b. 
E)  a and c. 
A)  contain three iodine atoms per molecule and do not dissociate in solution. 
B)  are referred to as ratio-1.5 media. 
C)  are considered to be ratio-3.0 media. 
D)  a and b. 
E)  a and c.

Question 8

Body parts whose tissues are particularly low contrast include the:

Accepted Answer

A)  blood vessels. 
B)  kidneys and biliary tree. 
C)  stomach and intestines. 
D)  b and c. 
E)  all of the above 
A)  blood vessels. 
B)  kidneys and biliary tree. 
C)  stomach and intestines. 
D)  b and c. 
E)  all of the above

Question 9

____ tablets are used for opacifying the gallbladder.

Accepted Answer

A)  Diatrizoate meglumine 
B)  Iocetamic acid 
C)  Barium sulfate 
D)  Iodamide meglumine 
E)  None of the above 
A)  Diatrizoate meglumine 
B)  Iocetamic acid 
C)  Barium sulfate 
D)  Iodamide meglumine 
E)  None of the above

Question 10

In roentgenography, derivations of triiodinated benzoic acid include:

Accepted Answer

A)  iodamide. 
B)  diatrizoate. 
C)  barium. 
D)  a and b. 
E)  all of the above. 
A)  iodamide. 
B)  diatrizoate. 
C)  barium. 
D)  a and b. 
E)  all of the above.

Question 11

Iodamide meglumine:

Accepted Answer

A)  is eliminated principally by the kidneys. 
B)  is not effective in cholecystography and cholangiography. 
C)  has been replaced by ultrasonography and CT scanning. 
D)  a and c only. 
E)  all of the above. 
A)  is eliminated principally by the kidneys. 
B)  is not effective in cholecystography and cholangiography. 
C)  has been replaced by ultrasonography and CT scanning. 
D)  a and c only. 
E)  all of the above.

Question 12

Osmolality:

Accepted Answer

A)  controls the distribution and movement of water between body compartments. 
B)  is the number of milliosmoles per kilogram of water. 
C)  is the number of milliosmoles per liter of solution. 
D)  a and b. 
E)  a and c. 
A)  controls the distribution and movement of water between body compartments. 
B)  is the number of milliosmoles per kilogram of water. 
C)  is the number of milliosmoles per liter of solution. 
D)  a and b. 
E)  a and c.

Intravascular ROCM:

Why are the tissues in question 1 particularly low contrast?

____ ROCM are supplied in nonsalt forms.

Diatrizoate meglumine and diatrizoate sodium solutions are:

Patients with renal impairment:

Iodine molecules are responsible for the silhouette images projected on radiographic film because they:

The newer low-osmolality ionic ROCM:

Body parts whose tissues are particularly low contrast include the:

____ tablets are used for opacifying the gallbladder.

In roentgenography, derivations of triiodinated benzoic acid include:

Iodamide meglumine:

Osmolality:

The Role of the Imaging Professional

Principles of Pharmacology

Biopharmaceutics and Pharmacokinetics

Pharmacodynamics

Drug Classifications

Pharmacodynamics of Radiopaque Contrast Media

Routes of Drug Administration

Infection Prevention and Control

Anxiety, Phobia, and Conscious Sedation

Pharmacology of Emergency Medications

Filters

Exam 6: Classification, Chemistry, and Pharmacology of Contrast Agents

Intravascular ROCM:

Why are the tissues in question 1 particularly low contrast?

____ ROCM are supplied in nonsalt forms.

Diatrizoate meglumine and diatrizoate sodium solutions are:

Patients with renal impairment:

Iodine molecules are responsible for the silhouette images projected on radiographic film because they:

The newer low-osmolality ionic ROCM:

Body parts whose tissues are particularly low contrast include the:

____ tablets are used for opacifying the gallbladder.

In roentgenography, derivations of triiodinated benzoic acid include:

Iodamide meglumine:

Osmolality:

The Role of the Imaging Professional

Principles of Pharmacology

Biopharmaceutics and Pharmacokinetics

Pharmacodynamics

Drug Classifications

Pharmacodynamics of Radiopaque Contrast Media

Routes of Drug Administration

Infection Prevention and Control

Anxiety, Phobia, and Conscious Sedation

Pharmacology of Emergency Medications

Filters