Which imaging modality does not use ionizing radiation and images the kidneys, ureters, and bladder?

Which imaging modality does not use ionizing radiation and images the kidneys, ureters, and bladder?

• A. CT with contrast
• B. Ultrasound
• C. Intravenous Pyelogram
• D. Retrograde Pyelogram

Answer: (B)

Ultrasound uses high-frequency sound waves to create images, so it does not expose you to ionizing radiation. It can visualize the kidneys and bladder well, showing structures, size, hydronephrosis, and bladder volume, and it can assess the ureters to some extent when there is obstruction. The other options rely on X-rays or fluoroscopy and involve ionizing radiation (CT with contrast, intravenous pyelogram, and retrograde pyelogram), so they’re not the correct choice when avoiding radiation. Therefore, ultrasound is the modality that does not use ionizing radiation and images the kidneys, ureters, and bladder.

Ultrasound uses high-frequency sound waves to create images, so it does not expose you to ionizing radiation. It can visualize the kidneys and bladder well, showing structures, size, hydronephrosis, and bladder volume, and it can assess the ureters to some extent when there is obstruction. The other options rely on X-rays or fluoroscopy and involve ionizing radiation (CT with contrast, intravenous pyelogram, and retrograde pyelogram), so they’re not the correct choice when avoiding radiation. Therefore, ultrasound is the modality that does not use ionizing radiation and images the kidneys, ureters, and bladder.