A myocardial perfusion scan is a type of nuclear scan that uses very small amounts of radioactive materials (radiopharmaceuticals) to assess the heart's function and blood flow.



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Note added at 38 mins (2007-03-01 16:48:44 GMT)
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This type of scan may be requested by the doctor in two cases :

- under stress
- rest

to give check the blood flow through thw heart's muscle

So we can translate it as :
مسح ذرى لعضلة القلب بدون اجهاد