/42 2931 Biophysique Preparation (Mr. At Vanyat) 1 / 42 1) What is the combination of one rarefaction and one compression? a. . Echo b. . Reflection c. . Refraction d. . Frequency e. . Cycle 2 / 42 2) An image of ultrasound has higher spatial resolution but less depth of penetration is given by …? a. . Normal Frequency b. . Ear frequency c. . Higher frequency d. . Adult frequency e. . Lower Frequency 3 / 42 3) What is Ultrasonography? a. . is a medical imaging technique that uses high frequency sound waves and their echoes? b. . is a medical imaging technique that uses low frequency sound waves and their echoes? c. . is a medical imaging technique that uses normal frequency sound waves and their echoes? d. . is a medical imaging technique that uses ear frequency sound waves and their echoes? e. . is a medical imaging technique that uses medium frequency sound waves and their echoes? 4 / 42 4) The region of a sound beam in which the beam diameter decreases as the distance from the transducer increases. What is it ? a. . Focal Zone b. . Fresnel Zone c. . Far Field d. . Near Field e. . Near Zone 5 / 42 5) A method to image moving blood and estimate blood velocity by exploiting the Doppler effect is called……? a. . Doppler effect b. . Heart doppler ultrasound c. . Sound effect d. . Doppler sound e. . Doppler ultrasound 6 / 42 6) What is the speed of ultrasound travel through human soft tissue? a. . 1541m/s b. . 1537m/s c. . 1540m/s d. . 1538m/s e. . 1539m/s 7 / 42 7) What is the main component of transducer? a. . Quartz phone b. . Piezoelectric c. . Acoustic matching layer d. . Gramophone e. . Acoustic Lens 8 / 42 8) The axial resolution is inversely proportional affected by………………? a. . Speed of sound b. . Frequency c. . Velocity d. . Cycle e. . Wavelength 9 / 42 9) The ability to resolve objects that lie one above the other is called…………….? a. . Lateral resolution b. . Axial Resolutions c. . Proportional and Inversion resolutions d. . Bright and Dark Resolutions e. . Transverse and Transmit Resolutions 10 / 42 10) What is the portion of a sound that is returned from the boundary of a medium? a. . Cycle b. . Frequency c. . Reflection d. . Return sound e. . Refraction 11 / 42 11) The reflection at the rough surface is…………………? a. . Specular Refraction b. . Diffuse Refraction c. . Medium Reflection d. . Specular Reflection e. . Diffuse Reflection 12 / 42 12) What is the application of doppler ultrasound? a. . Muscle imaging b. . Cervical imaging c. . Blood flow imaging d. . Braining imaging e. . Heart imaging 13 / 42 13) What is the speed at which sound waves travel through a particular medium? a. . Speed of frequency b. . Wavelength c. . Velocity d. . Echo speed e. . Reflection speed 14 / 42 14) The region where the beam diameter increases as the distance from the transducer increases. What is it? a. . Fresnel Zone b. . Focal Zone c. . Fraunhoffer zone d. . Near Zone e. . Near Field 15 / 42 15) Ultrasound is the most commonly used diagnostic imaging modality, accounting for approximately……of all imaging examinations performed worldwide nowadays. a. . 27% b. . 24% c. . 28% d. . 26% e. . 25% 16 / 42 16) 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. . A mode. b. . M mode c. . Transmitted mode d. . Reflection mode e. . B mode. 17 / 42 17) The ratio of the pressure to the particle velocity is called…………………? a. . Reflection b. . Frequency c. . Refraction d. . Echo e. . Acoustic Impedance 18 / 42 18) What is the change of sound direction on passing from one medium to another? a. . Reflection sound b. . Redirected sound c. . Return sound d. . Cycle e. . Refraction 19 / 42 19) What is unit of sound beam attenuation? a. . Hz (Hertz). b. . m/s (meter per second). c. . km/s (kilometer per second). d. . dB(decibel). e. . mm/s (millimeter per second). 20 / 42 20) The region where the beam diameter is most concentrated giving the greatest degree of focus. What is it ? a. . Fraunhoffer zone b. . Focal Zone c. . Near Field d. . Near Zone e. . Fresnel Zone 21 / 42 21) Amplitude mode. Where the signals are displayed as spikes that are dependent on the amplitude of the returning sound energy. It is called………………? a. . B mode. b. . Transmitted mode c. . Reflection mode d. . M mode e. . A mode 22 / 42 22) The part of ultrasound which transmit and receive sound is called…………? a. . Echo Pulse b. . Transducer c. . Scan Converter d. . Pulse generator e. . Beam 23 / 42 23) What is the distance between the onset of peak compression or cycle to the next? a. . Cycle b. . Echo distance c. . Frequency d. . Wavelength e. . Reflection distance 24 / 42 24) The reflection at the smooth surface is…………………? a. . Specular Refraction b. . Diffuse Reflection c. . Specular Reflection d. . Medium Reflection e. . Diffuse Refraction 25 / 42 25) The ability to resolve objects side by side is called………………? a. . Axial Resolutions b. . Transverse and Transmit Resolutions c. . Bright and Dark Resolutions d. . Lateral resolution e. . Proportional and Inversion resolutions 26 / 42 26) What is an application of ultrasound which is currently developing? a. . Ophthalmology b. . in utero imaging of the developing foetus c. . cardiac and vascular imaging d. . Cervical imaging e. . imaging of the abdominal organs 27 / 42 27) What is the maximum frequency audible to human ear? a. . 20kHz b. . 19kHz c. . 18kHz d. . 21kHz e. . 22kHz 28 / 42 28) Linear Array probe, Curved probe, Phrased array probe are three types of ……………? a. . Scan Converter b. . Beam c. . Pulse generator d. . Echo Pulse e. . Transducer 29 / 42 29) What is the decrease in amplitude and intensity as a sound wave travels through a medium? a. . Attenuation matching. b. . Reflection Attenuation. c. . Intensity Reduce. d. . Attenuation. e. . Amplitude Decrease. 30 / 42 30) What is the boundary between two different media where reflection and refraction occur? a. . Redirected sound Point b. . Return sound Boundary c. . Cycle Point d. . Acoustic Mismatch e. . Reflection Boundary 31 / 42 31) What is the number of cycles per unit of time? a. . Echo b. . Frequency c. . Refraction d. . Reflection e. . Cycle 32 / 42 32) Select a material which has the highest speed of sound? a. Gases b. Blood c. Fat d. Water e. Solids 33 / 42 33) An ultrasound image has lower spatial resolution but greater depth of penetration is given by…? a. . Normal Frequency b. . Higher frequency c. . Lower Frequency d. . Ear frequency e. . Adult frequency 34 / 42 34) Select a material which has the highest attenuation coefficient(dB/cm) a. . Fat b. . Air c. . Muscle and bone d. . Liver e. . Water 35 / 42 35) 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. . M mode. b. . Transmitted mode c. . A mode. d. . Reflection mode e. . B mode. 36 / 42 36) Please select types of ultrasound image resolution correctly. a. . Proportional and Inversion resolutions b. . Clear and deep resolutions c. . Bright and Dark Resolutions d. . Lateral and Axial Resolutions e. . Transverse and Transmit Resolutions 37 / 42 37) What is an application of ultrasound which is currently using in medical imaging? a. . Blood echography b. . Cancer imaging c. . Musculoskeletal imaging d. . Ophthalmology e. . In utero imaging of the developing foetus 38 / 42 38) The Specular medium reflections, diffuse reflections are three types of…………….…? a. . Refraction b. . Cycle c. . Frequency d. . Return sound e. . Reflection 39 / 42 39) The lateral resolution is proportionally affected by………………? a. . Speed of sound b. . Frequency c. . Velocity d. . Cycle e. . Wavelength 40 / 42 40) Select a material which has the lowest speed of sound? a. . Solids b. . Blood c. . Fat d. . Gases e. . Water 41 / 42 41) Select a material which has the lowest attenuation coefficient(dB/cm)? a. . Muscle and bone b. . Liver c. . Air d. . Water e. . Fat 42 / 42 42) What is the frequency range of diagnostic imaging using ultrasound? a. . 1MHz to 16MHz b. . 2MHz to 15MHz c. . 1MHz to 15MHz d. . 1MHz to 14MHz e. . 2MHz to 16MHz Your score isThe average score is 92% Facebook 0% Restart quiz Any comments? Send feedback