Myoview stress test uses radioactive injections, is this dangerous? some say it's an absurd amount of radiation. my need to change to a ct scan ?

It is not: an absurd amount of radiation. The average effective radiation is slightly more than a standard chest CT. A coronary artery CT angiogram, on the other hand, is nearly twice as much radiation as a myoview stress test, and doesn't provide the same information. The radionuclide used in the stress test, technetium 99m, has been safely used in medicine for more than 50 years.