In A-mode ultrasound, strong echoes create ____ spikes whereas weak reflections create _____ spikes.

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Sharpen your skills for the Davies Publishing SPI Test with targeted flashcards and multiple-choice questions, complete with hints and clarifications. Prepare thoroughly for success!

Multiple Choice

In A-mode ultrasound, strong echoes create ____ spikes whereas weak reflections create _____ spikes.

Explanation:
In A-mode ultrasound, the height of each spike represents the amplitude of the returned echo. The horizontal axis shows depth, while the spike height is proportional to how strong the reflection is. Therefore strong echoes come from interfaces with a large impedance difference and appear as tall spikes, whereas weak reflections come from smaller mismatches and appear as short spikes.

In A-mode ultrasound, the height of each spike represents the amplitude of the returned echo. The horizontal axis shows depth, while the spike height is proportional to how strong the reflection is. Therefore strong echoes come from interfaces with a large impedance difference and appear as tall spikes, whereas weak reflections come from smaller mismatches and appear as short spikes.

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