You are doing ultrasound that is suspicious to malignancy with more hardness of the medium and faster speed, that is the —–.

If an unfocused disc-shaped crystal has a diameter of 2 mm, what is the beam width at the distance of 2 near zone lengths?

Which of the following is/are correct about the images?        A                                                                              B

Lower duty factor —– rates of the bioeffects.

longer pulse duration is with increasing the ——

match the values of the duty factor?

If the PRF is 1 KHZ, what is the PRP?

The PRF of the 5MHZ is greater than a transducer with 1MHZ.

which of the following has the slowest speed of sound?

If the PRF (pulse repetition frequency) is decreased by the increasing in depth in 2-D imaging, the frequency of the sound——-.