_____ frequencies are best to use for scanning a large patient's abdomen.

_____ frequencies are best to use for scanning a large patient's abdomen.

• A. Higher
• B. Lower
• C. Mid-range
• D. Very high

Answer: (B)

In ultrasound, frequency controls both how deep the sound waves can penetrate and how much detail you can see. For scanning a large abdomen, you need to reach deep structures like the liver, spleen, and kidneys, and that requires more penetration. Lower frequencies travel deeper with less attenuation, so they let you visualize those deep organs even in a bulky patient. The trade-off is that the image isn’t as sharp as with higher frequencies, but depth priority wins here to ensure you can see what’s inside. Higher or very high frequencies would give crisper detail but wouldn’t penetrate far enough in a large patient, often causing poor or limited visualization of abdominal structures. A mid-range frequency would be a compromise but still may not provide adequate depth for a large abdomen.

In ultrasound, frequency controls both how deep the sound waves can penetrate and how much detail you can see. For scanning a large abdomen, you need to reach deep structures like the liver, spleen, and kidneys, and that requires more penetration. Lower frequencies travel deeper with less attenuation, so they let you visualize those deep organs even in a bulky patient. The trade-off is that the image isn’t as sharp as with higher frequencies, but depth priority wins here to ensure you can see what’s inside.

Higher or very high frequencies would give crisper detail but wouldn’t penetrate far enough in a large patient, often causing poor or limited visualization of abdominal structures. A mid-range frequency would be a compromise but still may not provide adequate depth for a large abdomen.