RTech 460 Pharmacology of ROCM
ACTUAL UPDATED QUESTIONS AND
CORRECT ANSWERS
What is ROCM and why is it used for parenteral use in diagnostic imaging? - CORRECT
ANSWERS✅✅Clear, colorless, water soluble fluid that attenuates x-ray beam.
Able to attenuate beam b/c iodine is key ingredient and has an atomic number of 53.
Used to visualize low contrast tissues.
What is ionic ROCM? - CORRECT ANSWERS✅✅Ionic = 3 iodine atoms per molecule
Contains anion and cation (one being a salt)
salts similar to sodium chloride that form ions when in water
What is an ion and what 2 categories are there? - CORRECT ANSWERS✅✅Ion =
electrically charged atom
Anion is a negative charged ion
Cation is a postive charged ion
When is an Anion formed? - CORRECT ANSWERS✅✅Anion formed when an atom gains
electrons in a reaction.
Why are they negative? - CORRECT ANSWERS✅✅Anions are negative because there are
more electrons than protons in the nuclei
When is a cation formed?
Why are they positive? - CORRECT ANSWERS✅✅Cation formed when a atom loses an
electron in a reaction.
Cations are positive because there are more protons than electrons in the nuclei
What happens when the 2 get together? - CORRECT ANSWERS✅✅Disassociation, which
means it changes from 2 charges to 1
, What is Non-ionic ROCM - CORRECT ANSWERS✅✅Has 3 iodine atoms per molecule
No anion & cation components so don't dissociate in water
contains an organic compound with the iodine, not salt
What are the ROCM Molecular classes - CORRECT ANSWERS✅✅Monomer - single
molecule
Dimer - 2 molecules (monomers)
What do ionic monomers have?
What do non-ionic monomers have? - CORRECT ANSWERS✅✅Ionic monomers = 3
iodine atoms & 2 particles salt
Non-ionic monomers = 6 iodine atoms and 1 organic particle
What do ionic dimers have?
What do non-ionic dimers have? - CORRECT ANSWERS✅✅Ionic dimers = 6 iodine atoms
and 2 particles salt
Non-ionic Dimers = 6 iodine atoms and 1 organic particle
What are the Ionic ROCM salts - CORRECT ANSWERS✅✅Diatrizoate Meglumine
Iodamine Meglumine
Iothalamate Meglumine
Diatrizoate Sodium
Iothalamate Sodium
What is osmosis? - CORRECT ANSWERS✅✅Movement of fluid through a semi
permeable membrane
What is milliosmoles? - CORRECT ANSWERS✅✅Concentraion of molecules
Human blood= 300 milliosmoles
Non-Ionic ROCM= 600 milliosmoles
ACTUAL UPDATED QUESTIONS AND
CORRECT ANSWERS
What is ROCM and why is it used for parenteral use in diagnostic imaging? - CORRECT
ANSWERS✅✅Clear, colorless, water soluble fluid that attenuates x-ray beam.
Able to attenuate beam b/c iodine is key ingredient and has an atomic number of 53.
Used to visualize low contrast tissues.
What is ionic ROCM? - CORRECT ANSWERS✅✅Ionic = 3 iodine atoms per molecule
Contains anion and cation (one being a salt)
salts similar to sodium chloride that form ions when in water
What is an ion and what 2 categories are there? - CORRECT ANSWERS✅✅Ion =
electrically charged atom
Anion is a negative charged ion
Cation is a postive charged ion
When is an Anion formed? - CORRECT ANSWERS✅✅Anion formed when an atom gains
electrons in a reaction.
Why are they negative? - CORRECT ANSWERS✅✅Anions are negative because there are
more electrons than protons in the nuclei
When is a cation formed?
Why are they positive? - CORRECT ANSWERS✅✅Cation formed when a atom loses an
electron in a reaction.
Cations are positive because there are more protons than electrons in the nuclei
What happens when the 2 get together? - CORRECT ANSWERS✅✅Disassociation, which
means it changes from 2 charges to 1
, What is Non-ionic ROCM - CORRECT ANSWERS✅✅Has 3 iodine atoms per molecule
No anion & cation components so don't dissociate in water
contains an organic compound with the iodine, not salt
What are the ROCM Molecular classes - CORRECT ANSWERS✅✅Monomer - single
molecule
Dimer - 2 molecules (monomers)
What do ionic monomers have?
What do non-ionic monomers have? - CORRECT ANSWERS✅✅Ionic monomers = 3
iodine atoms & 2 particles salt
Non-ionic monomers = 6 iodine atoms and 1 organic particle
What do ionic dimers have?
What do non-ionic dimers have? - CORRECT ANSWERS✅✅Ionic dimers = 6 iodine atoms
and 2 particles salt
Non-ionic Dimers = 6 iodine atoms and 1 organic particle
What are the Ionic ROCM salts - CORRECT ANSWERS✅✅Diatrizoate Meglumine
Iodamine Meglumine
Iothalamate Meglumine
Diatrizoate Sodium
Iothalamate Sodium
What is osmosis? - CORRECT ANSWERS✅✅Movement of fluid through a semi
permeable membrane
What is milliosmoles? - CORRECT ANSWERS✅✅Concentraion of molecules
Human blood= 300 milliosmoles
Non-Ionic ROCM= 600 milliosmoles
