This 1993). With conversion of these values in

This research measured the entrance surface radiation
dose to the gonadal region of male patients’ who were underwent the lumbar
spine X-ray examinations and analyzed the testicular radiation doses with the
patients’ BMI.

Male patients’ testicular region received high
radiation dose in lumbar spine X-ray examination after hip, pelvis and
abdominal X-ray examinations (Wall, et al., 2011). ESD is also high for a
lumbar spine examination (Aliasgharzadeh, et al., 2015). ESD vary with exposure
parameters while exposure parameters vary with the patient body thickness, type
of the equipment, imaging method, FFD, image processing conditions and also
different radiographic persons. With applying of same conditions for a specific
projection, one radiographer will use minimum possible exposure factors while
another person using the maximum possible exposure parameters for the same
examination.

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According to the above circumstances researchers were
used same X-ray equipment (Shimadzu), imaging method (CR), 100cm FFD and
16*43cm FOV with same exposure factors specified for the lumbar spine region on
digital radiographic unit (300mA,80kV,71mAs for AP and 300mA,80kV,80mAs for
lateral).

According to test results total mean testicular
radiation dose varies from 41.066µSv to 131.990µSv while the mean value was
73.356µSv. Previous researchers said that the doses as low as 0.15Gy will
reduce the sperm count and doses greater than 0.5Gy and 6Gy will result absence
of living spermatozoa and permanent sterility, respectively (Amanda, et al., 1993).
With conversion of these values in to equivalent dose values, shows that there
is no possible effect on testes with our test results for temporary or
permanent sterility.

BMI was selected as a variable to compare the patient testicular
radiation dose in two lumbar spine projections. In this research 16.10 to 36.20
BMI range was observed within the population with 23.47 mean value. Variation
between above parameter and total testicular radiation dose, AP and lateral testicular
radiation doses were analyzed separately. According to the analyzed result less
positive correlation was found between patient BMI and AP testicular radiation dose.
 Previous study conducted in Sri Lanka evaluated
the testicular radiation dose during the KUB radiography also found the similar
result that there is a weak positive correlation between BMI and testicular
radiation dose (Horadigala and Jayasinghe, 2014). In the present study, pearson
correlation test identified that the less negative significant correlation
between testicular radiation dose in lateral projection and patient BMI while
total testicular radiation dose shows least negative correlation with patient
BMI.

Distribution of AP and lateral dose values, total
testicular dose and BMI values were tested by normality test and determined
that distribution of total testicular ESD, ESD in lateral and patient BMI were
not normally distributed (p

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