1) A method to image moving blood and estimate blood velocity by exploiting the Doppler effect is called……?

2) Ultrasound is the most commonly used diagnostic imaging modality, accounting for approximately……of all imaging examinations performed worldwide nowadays.

3) The ratio of the pressure to the particle velocity is called…………………?

4) The ability to resolve objects side by side is called………………?

5) Please select types of ultrasound image resolution correctly.

6) Brightness mode. Where the signals are displayed as various points whose brightness depends on the amplitude of the returning sound energy. It is called……………?

7) What is the number of cycles per unit of time?

8) What is an application of ultrasound which is currently using in medical imaging?

9) What is the change of sound direction on passing from one medium to another?

10) Select a material which has the highest attenuation coefficient(dB/cm)

11) What is the main component of transducer?

12) Select a material which has the lowest attenuation coefficient(dB/cm)?

13) What is the decrease in amplitude and intensity as a sound wave travels through a medium?

14) Motion mode. The application of B-mode and a strip chart recorder allows visualization of the structures as a function of depth and time. It is called…………………?

15) The region where the beam diameter increases as the distance from the transducer increases. What is it?

16) The region of a sound beam in which the beam diameter decreases as the distance from the transducer increases. What is it ?

17) What is the combination of one rarefaction and one compression?

18) The reflection at the smooth surface is…………………?

19) The axial resolution is inversely proportional affected by………………?

20) The reflection at the rough surface is…………………?

21) What is an application of ultrasound which is currently developing?

22) What is the boundary between two different media where reflection and refraction occur?

23) The region where the beam diameter is most concentrated giving the greatest degree of focus. What is it ?

24) What is the frequency range of diagnostic imaging using ultrasound?

25) Select a material which has the lowest speed of sound?

26) The lateral resolution is proportionally affected by………………?

27) The Specular medium reflections, diffuse reflections are three types of…………….…?

28) Select a material which has the highest speed of sound?

29) What is the distance between the onset of peak compression or cycle to the next?

30) What is the portion of a sound that is returned from the boundary of a medium?

31) What is the application of doppler ultrasound?

32) The part of ultrasound which transmit and receive sound is called…………?

33) What is the speed of ultrasound travel through human soft tissue?

34) What is the speed at which sound waves travel through a particular medium?

35) What is the maximum frequency audible to human ear?

36) What is Ultrasonography?

37) An ultrasound image has lower spatial resolution but greater depth of penetration is given by…?

38) An image of ultrasound has higher spatial resolution but less depth of penetration is given by …?

39) Amplitude mode. Where the signals are displayed as spikes that are dependent on the amplitude of the returning sound energy. It is called………………?

40) Linear Array probe, Curved probe, Phrased array probe are three types of ……………?

41) The ability to resolve objects that lie one above the other is called…………….?

42) What is unit of sound beam attenuation?