/42 0 Biophysique Preparation (Mr. At Vanyat) 1 / 42 1) 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…………………? a. . A mode. b. . Reflection mode c. . Transmitted mode d. . B mode. e. . M mode. 2 / 42 2) An ultrasound image has lower spatial resolution but greater depth of penetration is given by…? a. . Normal Frequency b. . Adult frequency c. . Higher frequency d. . Lower Frequency e. . Ear frequency 3 / 42 3) What is the boundary between two different media where reflection and refraction occur? a. . Return sound Boundary b. . Cycle Point c. . Acoustic Mismatch d. . Reflection Boundary e. . Redirected sound Point 4 / 42 4) Linear Array probe, Curved probe, Phrased array probe are three types of ……………? a. . Beam b. . Scan Converter c. . Echo Pulse d. . Transducer e. . Pulse generator 5 / 42 5) What is the speed at which sound waves travel through a particular medium? a. . Velocity b. . Speed of frequency c. . Reflection speed d. . Echo speed e. . Wavelength 6 / 42 6) What is the portion of a sound that is returned from the boundary of a medium? a. . Frequency b. . Refraction c. . Return sound d. . Cycle e. . Reflection 7 / 42 7) Brightness mode. Where the signals are displayed as various points whose brightness depends on the amplitude of the returning sound energy. It is called……………? a. . Reflection mode b. . A mode. c. . B mode. d. . Transmitted mode e. . M mode 8 / 42 8) What is the decrease in amplitude and intensity as a sound wave travels through a medium? a. . Intensity Reduce. b. . Amplitude Decrease. c. . Attenuation matching. d. . Reflection Attenuation. e. . Attenuation. 9 / 42 9) Select a material which has the highest attenuation coefficient(dB/cm) a. . Water b. . Fat c. . Muscle and bone d. . Air e. . Liver 10 / 42 10) The ability to resolve objects that lie one above the other is called…………….? a. . Lateral resolution b. . Proportional and Inversion resolutions c. . Transverse and Transmit Resolutions d. . Bright and Dark Resolutions e. . Axial Resolutions 11 / 42 11) Amplitude mode. Where the signals are displayed as spikes that are dependent on the amplitude of the returning sound energy. It is called………………? a. . A mode b. . M mode c. . Reflection mode d. . Transmitted mode e. . B mode. 12 / 42 12) A method to image moving blood and estimate blood velocity by exploiting the Doppler effect is called……? a. . Doppler sound b. . Doppler ultrasound c. . Heart doppler ultrasound d. . Doppler effect e. . Sound effect 13 / 42 13) What is the maximum frequency audible to human ear? a. . 21kHz b. . 22kHz c. . 20kHz d. . 18kHz e. . 19kHz 14 / 42 14) The axial resolution is inversely proportional affected by………………? a. . Speed of sound b. . Cycle c. . Wavelength d. . Frequency e. . Velocity 15 / 42 15) The ratio of the pressure to the particle velocity is called…………………? a. . Frequency b. . Reflection c. . Acoustic Impedance d. . Refraction e. . Echo 16 / 42 16) What is the combination of one rarefaction and one compression? a. . Echo b. . Refraction c. . Cycle d. . Reflection e. . Frequency 17 / 42 17) What is Ultrasonography? a. . is a medical imaging technique that uses medium frequency sound waves and their echoes? b. . is a medical imaging technique that uses normal frequency sound waves and their echoes? c. . is a medical imaging technique that uses ear frequency sound waves and their echoes? d. . is a medical imaging technique that uses high frequency sound waves and their echoes? e. . is a medical imaging technique that uses low frequency sound waves and their echoes? 18 / 42 18) Select a material which has the lowest attenuation coefficient(dB/cm)? a. . Fat b. . Water c. . Liver d. . Muscle and bone e. . Air 19 / 42 19) The region of a sound beam in which the beam diameter decreases as the distance from the transducer increases. What is it ? a. . Near Field b. . Far Field c. . Near Zone d. . Fresnel Zone e. . Focal Zone 20 / 42 20) What is the main component of transducer? a. . Acoustic Lens b. . Acoustic matching layer c. . Quartz phone d. . Gramophone e. . Piezoelectric 21 / 42 21) The part of ultrasound which transmit and receive sound is called…………? a. . Scan Converter b. . Pulse generator c. . Echo Pulse d. . Beam e. . Transducer 22 / 42 22) The region where the beam diameter is most concentrated giving the greatest degree of focus. What is it ? a. . Fresnel Zone b. . Focal Zone c. . Near Field d. . Fraunhoffer zone e. . Near Zone 23 / 42 23) What is the distance between the onset of peak compression or cycle to the next? a. . Frequency b. . Wavelength c. . Reflection distance d. . Cycle e. . Echo distance 24 / 42 24) Select a material which has the highest speed of sound? a. Fat b. Blood c. Gases d. Water e. Solids 25 / 42 25) The region where the beam diameter increases as the distance from the transducer increases. What is it? a. . Focal Zone b. . Fresnel Zone c. . Fraunhoffer zone d. . Near Field e. . Near Zone 26 / 42 26) What is unit of sound beam attenuation? a. . dB(decibel). b. . mm/s (millimeter per second). c. . km/s (kilometer per second). d. . m/s (meter per second). e. . Hz (Hertz). 27 / 42 27) The Specular medium reflections, diffuse reflections are three types of…………….…? a. . Refraction b. . Return sound c. . Frequency d. . Cycle e. . Reflection 28 / 42 28) Ultrasound is the most commonly used diagnostic imaging modality, accounting for approximately……of all imaging examinations performed worldwide nowadays. a. . 25% b. . 27% c. . 28% d. . 26% e. . 24% 29 / 42 29) What is an application of ultrasound which is currently using in medical imaging? a. . Ophthalmology b. . Cancer imaging c. . In utero imaging of the developing foetus d. . Blood echography e. . Musculoskeletal imaging 30 / 42 30) Select a material which has the lowest speed of sound? a. . Gases b. . Fat c. . Water d. . Solids e. . Blood 31 / 42 31) The reflection at the rough surface is…………………? a. . Medium Reflection b. . Specular Refraction c. . Specular Reflection d. . Diffuse Refraction e. . Diffuse Reflection 32 / 42 32) What is the change of sound direction on passing from one medium to another? a. . Redirected sound b. . Cycle c. . Reflection sound d. . Return sound e. . Refraction 33 / 42 33) Please select types of ultrasound image resolution correctly. a. . Transverse and Transmit Resolutions b. . Clear and deep resolutions c. . Proportional and Inversion resolutions d. . Lateral and Axial Resolutions e. . Bright and Dark Resolutions 34 / 42 34) The lateral resolution is proportionally affected by………………? a. . Velocity b. . Speed of sound c. . Wavelength d. . Frequency e. . Cycle 35 / 42 35) What is the number of cycles per unit of time? a. . Refraction b. . Echo c. . Frequency d. . Reflection e. . Cycle 36 / 42 36) What is an application of ultrasound which is currently developing? a. . cardiac and vascular imaging b. . Cervical imaging c. . in utero imaging of the developing foetus d. . Ophthalmology e. . imaging of the abdominal organs 37 / 42 37) The reflection at the smooth surface is…………………? a. . Specular Reflection b. . Specular Refraction c. . Diffuse Refraction d. . Diffuse Reflection e. . Medium Reflection 38 / 42 38) What is the frequency range of diagnostic imaging using ultrasound? a. . 1MHz to 15MHz b. . 1MHz to 14MHz c. . 1MHz to 16MHz d. . 2MHz to 16MHz e. . 2MHz to 15MHz 39 / 42 39) What is the speed of ultrasound travel through human soft tissue? a. . 1541m/s b. . 1538m/s c. . 1537m/s d. . 1540m/s e. . 1539m/s 40 / 42 40) What is the application of doppler ultrasound? a. . Muscle imaging b. . Braining imaging c. . Heart imaging d. . Cervical imaging e. . Blood flow imaging 41 / 42 41) An image of ultrasound has higher spatial resolution but less depth of penetration is given by …? a. . Normal Frequency b. . Higher frequency c. . Adult frequency d. . Lower Frequency e. . Ear frequency 42 / 42 42) The ability to resolve objects side by side is called………………? a. . Proportional and Inversion resolutions b. . Transverse and Transmit Resolutions c. . Lateral resolution d. . Axial Resolutions e. . Bright and Dark Resolutions Your score isThe average score is 0% Facebook 0% Restart quiz Any comments? Send feedback