Question

why is the choice of a radiopharmaceutical important in radioisotope imaging? the radiopharmaceutical must localize to the specific organ or tissue to be imaged. the radiopharmaceutical must be able to block x - rays to create the image. the radiopharmaceutical must absorb and re - emit a specific radiation within a magnetic field. the radiopharmaceutical must pass through the body without being absorbed.

Explanation:

In radioisotope imaging, the radiopharmaceutical needs to accumulate in the specific organ or tissue of interest so that it can be visualized. It doesn't block X - rays, absorb and re - emit radiation in a magnetic field in the described way, nor pass through the body without absorption.

Answer:

The radiopharmaceutical must localize to the specific organ or tissue to be imaged.