Which of the following is NOT an advantage of ultrasound?

• A. Real-time images
• B. Portable
• C. Requires ionizing radiation
• D. No ionizing radiation

Answer: (C)

Ultrasound images are created using high-frequency sound waves, not ionizing radiation. That means it avoids the potential risks associated with radiation exposure, which is a key safety advantage.

Real-time imaging is possible, allowing you to watch moving structures—like a beating heart or flowing blood—live, which is crucial for accurate assessment. The technology is also highly portable, with compact devices that can be used at the bedside or in clinics, increasing accessibility and convenience. No ionizing radiation is another major benefit, making ultrasound safer for frequent use and especially favorable for imaging during pregnancy and in children.

The statement that requires ionizing radiation is not an advantage because ultrasound does not rely on ionizing radiation.