Study of wrist, finger and crystalline dosimetry in radiopharmacists and nursing assistants to adjust a percentage factor between the extremities

M. I. C. C. Guimarães, Universidade de São Paulo, Centro de Medicina Nuclear do Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina

I. B. Melo, Universidade de São Paulo, Centro de Medicina Nuclear do Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina

E. N. Itikawa, Universidade Federal de Goiás

U. F. de Souza, Universidade de São Paulo, Centro de Medicina Nuclear do Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina

C. A. Buchpiguel, Universidade de São Paulo, Centro de Medicina Nuclear do Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina

H. S. Videira, Universidade de São Paulo, Centro de Medicina Nuclear do Instituto de Radiologia do Hospital das Clínicas da Faculdade de Medicina

Abstract
This work finds a correlation factor setting a percentage of the difference between the values obtained at the body extremities. The data was obtained from 4 workers who inject and dispose radiopharmaceuticals. The workers handling radioactive material worn both ring and wrist dosimeters, with the exception of the radiopharmacist who worn one dosimeter on each wrist and a ring on his right hand. The dosimeters were TLD. To measure the crystalline, dosimeters were placed in each rod of workers’ safety goggles. The results show that for the radioisotope ^99m Tc were carried out a total of 20 elutions; 49 markings and 199 fractioning. Fourteen fractioning to ¹⁸F, 4 ¹³¹I, ⁶⁷Ga with 3 and 1 to ¹¹¹In. The radiopharmacist’s ring showed dose of 11 mSv, while the wrist dosimeter marked 7.78 mSv on the right and 5.40 mSv on the left. The goggles showed 0.43 mSv on the left side and 0.52 mSv on right side. The nurse’s results were: Nurse A: 1.13 mSv in ring and 0.23 in wrist; Nurse B: 1.11 mSv in ring and 0.90 mSv in wrist; Nurse C: 0.73 mSv in ring and 0.56 mSv in wrist. The goggles worn by Nurse B recorded 0.19 mSv on the right side and BG on the left side. The difference between the dose received by wrists and rings was between 20% and 30%. This factor obtained in these data encourages continuing research and shows that wrist dosimetry is feasible, respecting the proportionality.

Keywords
Dosimetry, OEI, Crystalline, Wrist, Fingers.

Cite this paper
M. I. C. C. Guimarães, I. B. Melo, E. N. Itikawa, U. F. de Souza, C. A. Buchpiguel, H. S. Videira, Study of wrist, finger and crystalline dosimetry in radiopharmacists and nursing assistants to adjust a percentage factor between the extremities , SCIREA Journal of Clinical Medicine. Volume 6, Issue 6, December 2021 | PP. 691-695. 10.54647/cm32666

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