Comparing radiation exposure to Radiation Health Workers (RHW) from the patient undergoing Myocardial Perfusion Imaging (MPI) in a single day protocol

The MPI study is performed with ^99mTc labelled radiopharmaceuticals such as Sestamibi or Tetrafosmin in a Single day or Dual day protocol. From the above observation of this present study, we observed that in second part of the MPI study the RHW received maximum radiation exposure. Also we know that the RHW have to stand in close proximity to the patient while performing physical/pharmacological stress before injecting radioactivity at peak stress level. Thus we recommend that stress part of the MPI study should be performed first as far as clinically possible in order to minimize the radiation exposure to the RHW