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Table 1 Diagnostic X-ray examinations experienced by men during the window of exposure*.

From: Male gonadal dose of ionizing radiation delivered during X-ray examinations and monthly probability of pregnancy: a population-based retrospective study

Type and anatomical localization of X-ray examinations Mean gonadal dose per examination (mGy) Examinations performed from 18 years to the beginning of the period of unprotected intercourse
   Number of X-ray examinations %
Simple radiographs
Skull, head and neck 0.02 79 6.3
Upper limbs 0.01 202 16.1
Chest, lungs and thorax 0.02 51 4.1
Upper lumbar spine 0.1 28 2.2
Lower lumbar spine 0.6 127 10.1
Abdomen 0.7 10 0.8
Pelvis and hips 4 71 5.6
Lower limbs 0.01 487 38.7
Unknown localization 0.42 77 6.1
Computed Tomography scanners
Skull, head and neck 0.10 16 1.3
Upper limbs 0.05 2 0.2
Chest, lungs and thorax 0.02 2 0.2
Upper lumbar spine 0.45 2 0.2
Lower lumbar spine 3.1 13 1.0
Abdomen 3.7 4 0.3
Pelvis and hips 20 7 0.6
Lower limbs 0.05 7 0.6
Unknown localization 2.78 1 0.1
Nuclear medicine examinations
Skull 1.00 2 0.2
Body scintigraphy 3.00 1 0.1
Complex examinations
Thoracic angiography 1.5 7 0.6
Lower limbs angiography 5.1 1 0.1
Phlebography below diaphragm 5.5 3 0.2
Upper limbs arthrography 0.05 0 0.0
Lower limbs arthrography 0.10 1 0.1
Myelography 2.2 2 0.2
Barium meal 3.7 21 1.7
Intravenous urography 50 22 1.8
Cystography 20 2 0.2
Unknown device 0 9 0.7
Total - 1257 100
  1. (n = 1110 pregnancies or periods of involuntary infertility lasting one year or more among 704 couples living in Beaumont-Hague and in the Saint-Brieuc area, France).
  2. * The window of exposure spans from the age of 18 years until the beginning of the period of unprotected intercourse. The dose estimated to be delivered to the gonads (mGy) for each type of examination is also given.
  3. Mean value of the gonadal doses assessed for all X-rays examinations for that device, whatever their localization.