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PubMed2001

[Dosimetry comparison of pelvimetry methods using conventional radiographs and CT].

PURPOSE: To determine the fetal and maternal exposure to radiation by use of thermoluminescent dosimeters in order to compare conventional and CT-scan X-ray. Materials and methods. Dosimetry was performed with an anthropomorph phantom. Thermoluminescent dosimeters were positioned on the surface and in the depth of the phantom. Digital radiography of the pelvis was performed according to a standard technique. CT-scan of the pelvis was performed according to the Buthiau's technique. RESULTS: With CT, the dose reached 0.31 to 4.95 mGy, with a dose of 2.32 mGy for the fetal gonads. With standard technique, the doses reached 0.03 to 0.39 mGy, with a dose of 0.39 mGy for the fetal gonads. CONCLUSION: With CT the fetus and the mother were exposed to 1/10th of the total dose delivered using conventional X-rays and the dose distribution was more homogenous.

Pelvimetry↗