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Radiation dosimetry of 89Zr labeled antibody estimated using the MIRD method and MCNP code

  • Saeideh Izadi Yazdi (Medical Radiation Engineering Department, Science and Research Branch, Islamic Azad University) ;
  • Mahdi Sadeghi (Medical Physics Department, School of Medicine, Iran University of Medical Sciences) ;
  • Elham Saeedzadeh (Medical Radiation Engineering Department, Science and Research Branch, Islamic Azad University) ;
  • Mostafa Jalilifar (Medical Physics Department, School of Medicine, Iran University of Medical Sciences)
  • Received : 2022.08.01
  • Accepted : 2022.12.28
  • Published : 2023.04.25

Abstract

One important issue in using radiopharmaceuticals as therapeutic and imaging agents is predicting different organ absorbed dose following their injection. The present study aims at extrapolating dosimetry estimates to a female phantom from the animal data of 89Zr radionuclide accumulation using the Sparks-Idogan relationship. The absorbed dose of 89Zr radionuclide in different organs of the human body was calculated based on its distribution data in mice using both MIRD method and the MCNP simulation code. In this study, breasts, liver, heart wall, stomach, kidneys, lungs and spleen were considered as source and target organs. The highest and the lowest absorbed doses were respectively delivered to the liver (4.00E-02 and 3.43E-02 mGy/MBq) and the stomach (1.83E-03 and 1.66E-03 mGy/MBq). Moreover, there was a good agreement between the results obtained from both MIRD and MCNP methods. Therefore, according to the dosimetry results, [89Zr] DFO-CR011-PET/CT seems to be a suitable for diagnostic imaging of the breast anomalies for CDX-011 targeting gpNMB in patients with TNBC in the future.

Keywords

Acknowledgement

This research was supported by grant No. [14388] from the School of Medicine, Iran University of Medical Sciences (IUMS).

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