FRCR MCQ----CONTRAST AGENT

1.True regarding iodinated contrast medium.

a. tri-iodo benzene ring derivatives with three atoms of iodine at 3,4,6 positions (in monomers)

b. tri-iodo benzene ring derivatives with six atoms of iodine per molecule of the ring anion (in dimers)

c. very hydrophobic , have high lipid solubility, low toxicity,

d. high binding affinities for protein, receptors or membranes

e. have molecular weights less than 2000

586.True regarding artificial method of radionuclide production

a.⁹⁸Mo +n ---> ⁹⁹Mo(nuclear reactor)

b.¹⁸o +p ---> ¹⁸F +n (cyclotron)

c.²³⁸U--->⁹⁸Mo + other fission by-products( from spent fuel products of nuclear reactors)

d.⁹⁹Tc^m  from molybdenum -99/⁹⁹Tc^m generator

e.⁶⁸gallium from a gemanium-68 (⁶⁸Ge/⁶⁸Ga) generator