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Assessment of activity incorporated in human body by means of a HPGe-detector

Abstract

Human body models (phantoms) have been used to study relations between efficiency in measurement of radionuclide activity and measurement conditions. A comparison is made between the activity measurement with and without a motion. When the phantom is moved under the detector, an absolute efficiency increase of 30-40% in homogeneously distributed activity and 2-3 times increase in activity concentrated in the lungs are found. Incorrect calibration is found to introduce an error of 30-40% in the measurement with motion while without motion the error can reach 150-300%. The effects of object weight, size and shield are studied. A procedure for accurate measurement has been developed. The incorporated activity in a human body has been measured using this procedure. Two Kozloduy-2 staff members have been subject to measurement. Cs-137 activity was homogeneously distributed with values 175 Bq in person X and 1050 Bq in person Y. Co-60 activity was concentrated in the lungs with values of 110 Bq and 470 Bq respectively. 14 refs., 5 tabs.
Authors:
Boshkova, T; Minev, L; [1]  Konstantinov, V [2] 
  1. Sofia Univ. (Bulgaria). Fizicheski Fakultet
  2. Kombinat Atomna Energetika, Kozloduj (Bulgaria)
Publication Date:
Dec 31, 1995
Product Type:
Conference
Report Number:
INIS-BG-0013; CONF-9410364-
Reference Number:
SCA: 560101; PA: AIX-28:034002; EDB-97:063286; SN: 97001774842
Resource Relation:
Conference: 1. scientific and technical conference on nuclear safety conference dedicated to NPP Kozloduy, Kozloduy (Bulgaria), 25-26 Oct 1994; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of a scientific-technical conference dedicated to the 20-th anniversary of Kozloduy NPP with international participation; PB: 442 p.
Subject:
56 BIOLOGY AND MEDICINE, APPLIED STUDIES; PERSONNEL MONITORING; KOZLODUY-2 REACTOR; RADIATION MONITORING; ACCURACY; CALIBRATION; CESIUM 137; COBALT 60; GAMMA SPECTROMETERS; HIGH-PURITY GE DETECTORS; LUNGS; PHANTOMS
OSTI ID:
463218
Country of Origin:
Bulgaria
Language:
English
Other Identifying Numbers:
Other: ON: DE97621621; TRN: BG9700058034002
Availability:
INIS; OSTI as DE97621621
Submitting Site:
INIS
Size:
pp. 415-422
Announcement Date:

Citation Formats

Boshkova, T, Minev, L, and Konstantinov, V. Assessment of activity incorporated in human body by means of a HPGe-detector. Bulgaria: N. p., 1995. Web.
Boshkova, T, Minev, L, & Konstantinov, V. Assessment of activity incorporated in human body by means of a HPGe-detector. Bulgaria.
Boshkova, T, Minev, L, and Konstantinov, V. 1995. "Assessment of activity incorporated in human body by means of a HPGe-detector." Bulgaria.
@misc{etde_463218,
title = {Assessment of activity incorporated in human body by means of a HPGe-detector}
author = {Boshkova, T, Minev, L, and Konstantinov, V}
abstractNote = {Human body models (phantoms) have been used to study relations between efficiency in measurement of radionuclide activity and measurement conditions. A comparison is made between the activity measurement with and without a motion. When the phantom is moved under the detector, an absolute efficiency increase of 30-40% in homogeneously distributed activity and 2-3 times increase in activity concentrated in the lungs are found. Incorrect calibration is found to introduce an error of 30-40% in the measurement with motion while without motion the error can reach 150-300%. The effects of object weight, size and shield are studied. A procedure for accurate measurement has been developed. The incorporated activity in a human body has been measured using this procedure. Two Kozloduy-2 staff members have been subject to measurement. Cs-137 activity was homogeneously distributed with values 175 Bq in person X and 1050 Bq in person Y. Co-60 activity was concentrated in the lungs with values of 110 Bq and 470 Bq respectively. 14 refs., 5 tabs.}
place = {Bulgaria}
year = {1995}
month = {Dec}
}