HIGH-VOLTAGE ROENTGENOGRAPHY OF FETUS
Journal Article
·
· Hiroshima Journal of Medical Sciences (Japan)
OSTI ID:4731198
The possibilities of reducing radiation exposure of the ovaries and fetal organs during abdominal radiodiagnostic examination of pregnant women were explored by the use of high-voltage x rays. Depth doses were measured in a water phantom using x rays varying in intensity from 60 to 140 kvp. Comparison between the use of intensifying screens at 80 and 140 kvp revealed that the dose to the gonads of the fetus with the latter was 1/5 and that to the gonads of the mother was 1/3 as compared with 80 kvp. At the same voltage, changing the filter to remove soft rays decreased the irradiation dose further. Comparison of 80 kvp (1.5 mm Al filter) with 140 kvp (0.2 mm Cu + 1.0 mm Al) revealed that the irradiation dose to the gonads of the fetus with the latter was 1/6 as compared with the former voltage and the irradiation dose to the gonads of the mother was 1/3. The higher the voltage, the lower the bone shadowing ability and the more unclear the film becomes. Hence, it was confirmed that by elevating voltage and using adequate filters and intensifying screens, the irradiation dose can be decreased. It is believed that the advantages of high-voltage radiography in reducing fetal and maternal gonadal exposure outweigh the disadvantage of the lower differential density of bone and soft tissues. (TCO)
- Research Organization:
- Hiroshima Univ.
- NSA Number:
- NSA-17-020259
- OSTI ID:
- 4731198
- Journal Information:
- Hiroshima Journal of Medical Sciences (Japan), Journal Name: Hiroshima Journal of Medical Sciences (Japan) Vol. Vol: 11; ISSN HIJMA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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