Question

Which of the following adjustments would improve the appearance of contrast on the echo image?

A) Decrease output power
B) Increase the thermal index
C) Turn off harmonic imaging
D) Use multiple focal zones

Answer 1

To improve contrast on an echo image, using multiple focal zones is recommended as it enhances the resolution and contrast by focusing the ultrasound beam at different tissue depths.

Step-by-step explanation:

The question pertains to the improvement of contrast on an echo image, which is likely to be a reference to medical imaging, specifically ultrasound imaging. To improve the appearance of contrast, one can use multiple focal zones. This approach helps to enhance the resolution and contrast of the image by focusing the ultrasound beam at different depths within the tissue. It allows for better differentiation between different tissues and clearer imaging. Using multiple focal zones increases the time of imaging but the benefit of improved image quality often outweighs the time cost.

Answer 2

To enhance the contrast on an echo image, the use of multiple focal zones is recommended. This approach improves resolution and contrast at different depths, leading to a clearer image. Harmonic imaging is generally kept on for better tissue differentiation and contrast enhancement.

Step-by-step explanation:

The student's question pertains to improving the contrast on an echo image, which is likely related to ultrasound imaging in a medical context. To improve the appearance of contrast on an echo image, using multiple focal zones is generally beneficial. This technique enhances the resolution and contrast at various depths, which can make the image clearer. Contrast on ultrasound images can also be improved by adjusting the output power and frequency, though these are not options provided in the question. It is also important to mention that harmonic imaging typically provides better tissue differentiation and contrast, so turning it off might not necessarily improve contrast unless there are specific reasons for doing so in certain cases.