Answer to Question #7251 Submitted to "Ask the Experts"
The following question was answered by an expert in the appropriate field:
I am to have a nuclear stress test that is supposed to be the most up-to-date test and machine to date. I am confused about the amount of radiation on the tables with multiple levels. All I really know is that it is a nuclear stress test that takes three to four hours to complete and I will walk the treadmill and rest. Can you give me an idea of the amount of radiation exposure with this information? I am 33 years old and have had many radiation tests in the last 10 years.
Without specific details on the radiopharmaceutical and amount utilized, the question can be answered, but with a several assumptions. Our medical center performs cardiac stress/rest tests using a radiopharmaceutical called 99mTc (technetium-99m) Myoview. Myoview is a trade name for tetrofosmin. For the stress portion of the test (i.e., while walking on a treadmill), 930 MBq are administered and for the rest portion of the test, 333 MBq are administered.
Ask the Experts is posting answers using only SI (the International System of Units) in accordance with international practice. To convert these to traditional units we have prepared a conversion table. You can also view a diagram to help put the radiation information presented in this question and answer in perspective. Explanations of radiation terms can be found here.
Answer posted on 21 February 2008. The information posted on this web page is intended as general reference information only. Specific facts and circumstances may affect the applicability of concepts, materials, and information described herein. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice. To the best of our knowledge, answers are correct at the time they are posted. Be advised that over time, requirements could change, new data could be made available, and Internet links could change, affecting the correctness of the answers. Answers are the professional opinions of the expert responding to each question; they do not necessarily represent the position of the Health Physics Society.
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