For suspected kidney stones during pregnancy, which imaging modality is preferred?

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Multiple Choice

For suspected kidney stones during pregnancy, which imaging modality is preferred?

Ultrasound is preferred because it avoids any fetal radiation and can reliably show signs of urinary obstruction, such as hydronephrosis, which helps confirm suspected stones and guide management in pregnancy. While non-contrast CT is highly sensitive for stones, it involves ionizing radiation that poses fetal risks, so it’s avoided unless absolutely necessary. MRI also lacks radiation but is not the first choice for stones due to practicality and accessibility, though it can be used if ultrasound is inconclusive. Abdominal X-ray exposes the fetus to radiation and often misses stones, especially radiolucent ones, making it a less suitable option in pregnancy. So ultrasound stands out as the safest and most effective initial imaging locally for suspected stones during pregnancy.

Ultrasound is preferred because it avoids any fetal radiation and can reliably show signs of urinary obstruction, such as hydronephrosis, which helps confirm suspected stones and guide management in pregnancy. While non-contrast CT is highly sensitive for stones, it involves ionizing radiation that poses fetal risks, so it’s avoided unless absolutely necessary. MRI also lacks radiation but is not the first choice for stones due to practicality and accessibility, though it can be used if ultrasound is inconclusive. Abdominal X-ray exposes the fetus to radiation and often misses stones, especially radiolucent ones, making it a less suitable option in pregnancy. So ultrasound stands out as the safest and most effective initial imaging locally for suspected stones during pregnancy.

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