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Radiation gonad doses received by children in intravenous urography and micturition cysto-urethrography

U Seppänen, P Torniainen, K Kiviniitty

    Pediatric Radiology
    |July 24, 1979
    PubMed

    Insights

    Pediatric gonad doses during intravenous urography (IVU) and micturition cysto-urethrography (MCU) were measured. Doses varied significantly, with higher levels observed in girls during MCU, prompting risk assessments for leukemia and genetic effects.

    Area of Science:

    • Medical Imaging
    • Pediatric Radiology
    • Radiation Dosimetry

    Background:

    • Intravenous urography (IVU) and micturition cysto-urethrography (MCU) are common diagnostic procedures in children.
    • Assessing radiation exposure to gonads is crucial for evaluating potential long-term health risks, including leukemia and genetic damage.

    Purpose of the Study:

    • To measure and compare gonad doses in pediatric patients undergoing IVU and MCU.
    • To evaluate the associated risks of leukemia and genetic damage based on measured doses.

    Main Methods:

    • Gonad doses were measured in 47 children during IVU and 57 children during MCU using ionization chamber dosimeters.
    • Dosimeters were placed rectally in girls and on the scrotum in boys.
    • Dose ranges for both procedures and sexes were recorded.

    Main Results:

    • During IVU, pediatric gonad doses ranged from 27 to 201 mrad in girls and 7 to 112 mrad in boys.
    • During MCU, doses ranged from 53 to 1900 mrad in girls and 24 to 309 mrad in boys.
    • Significant variations in gonad dose were observed between procedures and sexes, particularly higher doses in girls during MCU.

    Conclusions:

    • Pediatric patients undergoing IVU and MCU receive measurable gonad doses.
    • Micturition cysto-urethrography (MCU) can result in higher gonad doses for girls compared to intravenous urography (IVU).
    • Calculated risks for leukemia and genetic effects warrant consideration in pediatric radiation practices.

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