Which tool is used to measure acoustic output parameters like pressure amplitude?

What do devices measuring only the beam former and transducer evaluate?

Which device simulates tissue properties and includes echo-free regions and nylon lines?

Flash artifact is most commonly caused by:

Which artifact places echoes closer to the surface than they actually are?

Which of the following best defines a sonographic artifact?

What assumption of the ultrasound system contributes to artifact formation if incorrect?

Phantoms that use blood-mimicking liquid can simulate:

Write the name (not just the symbol) for the elements that fit the following descriptions. 26 protons in the nucleus of each atom  [red1] 20 electrons in each uncharged atom  [red2] 80 electrons in each +2 cation   [red3] 10 electrons in each -3 anion [red4]

Identify each of the following as a cation or an anion.                                                                                            An iron ion with 26 protons and 23 electrons [answ8]   A chlorine ion with 17 protons and 18 electrons [answ7]    A sodium ion with 11 protons and 10 electrons [answ5]  A sulfur ion with 16 protons and 18 electrons [answ6]