Calculation of the amount of kidney absorbed in newborn heart scan Using the Monte Carlo method

Abstract: The ESPECT cardiac method is a way to image heart muscle and measure the amount of coronary artery involvement. In this method, a radiopharmaceutical is injected into the patient s body, and after radiotherapy is distributed to the heart, a gamma camera is taken from the patient s body. it is clear that the radiation from the radioactive substance in the radio-drugs can affect the whole body.In this article, the amount of absorbed doses in the kidneys during cardiac ESPECT operation was measured and compared with the data available in ICRP resources. To measure this value, the Multi-Purpose MCNP Monte Carlo Code has been used.In this way, different phantoms are simulated using this code and then we define the radioactive springs on the heart then We measured the flux of the kidneys and eventually we obtained the absorbed dose using the MIRD method. We observed that the data obtained from the Monte Carlo method largely matched the data of the ICRP resources and this is confirmed by the hypothesis that this method can be used to obtain the amount of radiolabeled drug used in medical beam.With a glimpse, we can conclude that the higher the body weight, the lower the dosage to the target organ. Therefore, it may be necessary to say that newborn babies and children under the age of 10 years should receive radio-medication and newer methods. Because, given that radio frequency energy is the same for all ages and the dose received in newborns is much higher than children older than age, the risk of nuclear imaging for infants is several times that of adults. With regard to the computational aspect of this method, it can be claimed that this method will be less costly and more useful than other methods of calculating the dose.It can be said that by correcting more and more accurately this method and further developing the computational code, it would be easy to expect that many risks and expenses in the field of nuclear medicine could be reduced and health patients were more likely to be considered.

کلیدواژه ها:

Nuclear Medicine ، Dosimetry ، SPECT ، MCNP ، Monte Carlo Code ، MIRD method