Why is the choice of a radiopharmaceutical important in radioisotope imaging? O The radiopharmaceutical must localize to the specific organ or tissue to be imaged

OThe radiopharmaceutical must be able to block X-rays to create the image

OThe radiopharmaceutical must absorb and re-emit a specific radiation within a magnetic field

O The radiopharmaceutical must pass through the body without being absorbed

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?