Which of the following artifacts requires 2 highly reflective specular surfaces?

Which artifact is demonstrated in this image?  

Which of the following artifacts could be classified as an image detail resolution artifact?

Which of the following modes of ultrasound has the highest risk of mechanical bioeffects.

What is the artifact that is created by the bouncing of a sound wave between 2 strong specular reflectors positioned parallel to the sound beam

What is the ratio between the temporal average and the pulse average called?

Which ultrasound modality has the highest risk for thermal bioeffects?

Which of the following changes would most likely result in the difference seen between the first image and second image?

Acoustic speckle is caused by _____________ and creates a pseudo tissue texture.

To minimize the risk for thermal bioeffects the maximum intensity level should be kept below __________.