ESTIMATION OF ANNUAL GENETICALLY SIGNIFICANT DOSE FROM DIAGNOSTIC RADIOGRAPHY IN KADUNA STATE
ESTIMATION OF ANNUAL GENETICALLY SIGNIFICANT DOSE FROM DIAGNOSTIC RADIOGRAPHY IN KADUNA STATE
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Date
1970
Authors
MOKOBIA, C.E.,
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Abstract
The generically significant dose from X-ray
diagnostic procedures has been determined in many countries.
For the estimation of the annual genetically significant
dose from X-ray radiography in Kaduna state the age and
sex distributions of patients who under-went five diagnostic
examinations were obtained from, X-ray depart rents of four
sample hospitals. Entrance exposures to the skin were
measured using free- in air method. Organ doses were then
estimated using Protein's "Handbook of selected Organ
Doses for projections Common in Diagnostic Radiology."
Child expectancies for various age-sex groups in
Kaduna state were calculated by combining the number of
members of a cohort surviving to reach successive age
bands of Specified duration with the age specific maternity/
paternity rates. The maximum child expectancies for the
sexes were found to be 2.97 and 1.98 for males and females
respectively.
The annual Gs d from diagnostic radiography for five
examinations was then estimated by combining the age-sex
distributions with child expectancies and gonadal doses
per person per examination. The annual GS D for Kaduna
state was estimated to be 37.4.± 3.9 μGy.
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ESTIMATION,, ANNUAL,, GENETICALLY,, SIGNIFICANT DO,SE, DIAGNOSTIC,, RADIOGRAPHY,, KADUNA STATE