Biophysique Test

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Biophysique Test

 

1 / 60

Which mode of echography provides a real-time, two-dimensional image of the internal structures of the body?

2 / 60

A 70-year-old male patient with a history of obesity is referred for an echocardiogram. Which of the following is a limitation of echography in this patient?

3 / 60

A 60-year-old male patient with suspected deep vein thrombosis (DVT) is referred for an ultrasound. Which type of probe is most suitable for imaging superficial structures and vessels?

4 / 60

A patient with suspected deep vein thrombosis (DVT) is referred for an ultrasound. Which echography mode is primarily used to assess blood flow in the veins?

5 / 60

D’aprΓ¨s la dΓ©sintΓ©gration Ξ±, par exemple, le radium 226 se transforme spontanΓ©ment en l’élΓ©ment Y en Γ©mettant d’un
noyau d’hΓ©lium. Donnez la valeur du nombre de masse (A) du noyau Y de la voie de sortie. 226Ra88 Y 4He2

6 / 60

On s’intΓ©resse Γ  l’étude la dΓ©sintΓ©gration Ξ², un proton se transforme en neutron dans le noyau selon la rΓ©action
suivante. Γ‰crivez l’équation de conservation du nombre leptonique.

7 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Donnez la valeur du nombre atomique (Z) de particule Ξ±.

8 / 60

Les transitions isomΓ©riques aprΓ¨s dΓ©sintΓ©grations bΓͺta moins de l’isotope 60 de Cobalt. Quelle est
l’énergie libΓ©rΓ©e est Γ©mise sou forme d’un photon 1 ?

9 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Donnez la valeur de la charge (Z) de particule Ξ² ?

10 / 60

Quelle est la dΓ©sintΓ©gration beta moins qui a lieu lors de l’atome radioactive se transforme
spontanΓ©ment en autre atome ?

11 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Γ‰crivez la conservation de charge lors de la rΓ©action.

12 / 60

Quelle est la dΓ©sintΓ©gration alpha qui a lieu lors de l’atome radioactive se transforme
spontanΓ©ment en autre atome ?

13 / 60

D’aprΓ¨s la dΓ©sintΓ©gration Ξ±, par exemple, le radium 226 se transforme spontanΓ©ment en l’élΓ©ment Y en Γ©mettant d’un
noyau d’hΓ©lium. Donnez la valeur du nombre atomique (Z) du noyau Y de la voie de sortie.

14 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Donnez la valeur leptonique de n ?

15 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Donnez la valeur leptonique de particule Ξ² ?

16 / 60

Quel est l’énergie du photon incident pour que soit matΓ©rialisΓ©e une masse Γ©gale Γ  celle de 2 Γ©lectrons ?

17 / 60

On s’intΓ©resse Γ  l’étude de la rΓ©action nuclΓ©aire ci-dessous. Γ‰crivez la conservation de masse lors de la rΓ©action.

18 / 60

Le schΓ©ma de dΓ©croissance de cet isotope est prΓ©sentΓ© ci-dessous. Identifiez la pΓ©riode radioactive.

19 / 60

A 55-year-old male with a history of chronic kidney disease presents with worsening lower back pain. The physician considers ordering an MRI to evaluate the cause of the pain.

4. Which of the following is a disadvantage of using MRI in this clinical case?

20 / 60

A 35-year-old female presents with sudden onset of severe headaches, visual disturbances, and nausea. The physician suspects a possible brain tumor and considers ordering an MRI.

3. Which of the following is an indication for performing an MRI in this clinical case?

21 / 60

A 65-year-old female with a history of breast cancer presents with new onset of back pain. The physician considers ordering an MRI to evaluate for possible metastasis.

5. Which of the following is a disadvantage of using MRI in this clinical case, particularly related to cost?

22 / 60

Dans une expΓ©rience de laboratoire, on expose une feuille d’aluminium Γ  des photons X de 60 keV. Que reprΓ©sente le coefficient d’attΓ©nuation linΓ©ique (ΞΌ) dans ce contexte ?

23 / 60

Un manipulateur en mΓ©decine nuclΓ©aire prΓ©pare une dose de 99mTc pour une scintigraphie osseuse. Ce radionuclΓ©ide Γ©met un photon Ξ³ de 140 keV. Quelle est la nature de cette Γ©mission ?

24 / 60

Dans une expΓ©rience de laboratoire, on expose une feuille d’aluminium Γ  des photons X de 60 keV. Quelle consΓ©quence observe-t-on aprΓ¨s l’effet photoΓ©lectrique ?

25 / 60

Un manipulateur en mΓ©decine nuclΓ©aire prΓ©pare une dose de 99mTc pour une scintigraphie osseuse. Ce radionuclΓ©ide Γ©met un photon Ξ³ de 140 keV. Quelle prΓ©caution principale doit prendre le manipulateur lors de la prΓ©paration du 99mTc ?

26 / 60

Un technicien allume un gΓ©nΓ©rateur Γ  rayons X Γ  100 kV pour une radiographie thoracique. D’oΓΉ proviennent les rayons X ?

27 / 60

Lors d’une curiethΓ©rapie au cΓ©sium-137, le personnel doit se protΓ©ger contre les radiations Γ©manant des sources scellΓ©es. Le type de rayonnement majoritaire Γ©mis par le Cs-137 est :

28 / 60

Un manipulateur en mΓ©decine nuclΓ©aire prΓ©pare une dose de 99mTc pour une scintigraphie osseuse. Ce radionuclΓ©ide Γ©met un photon Ξ³ de 140 keV. Quelle est la demi-vie du 99mTc ?

29 / 60

Un physicien mΓ©dical mesure une activitΓ© de 3,7 Γ— 10⁹ Bq autour d’une source de Cobalt-60. Γ€ combien de Curie (Ci) cela correspond-il ?

30 / 60

Dans une expΓ©rience de laboratoire, on expose une feuille d’aluminium Γ  des photons X de 60 keV. Quelle consΓ©quence observable indique la survenue d’un diffusion Compton dans l’expΓ©rience ?

31 / 60

What is the approximate dynamic range of the human ear in the 1–2 kHz frequency range?

32 / 60

What is the primary function of the cochlear hair cells?

33 / 60

Where in the ear does the amplification of sound primarily occur?

34 / 60

What part of the ear captures sound from the environment?

35 / 60

What is the role of the ossicles (malleus, incus, stapes)?

36 / 60

What can happen if the volume flow rate of blood or air is too low?

37 / 60

Why is volume flow rate important in the respiratory system?

38 / 60

What happens to the dynamic range at very low or very high frequencies?

39 / 60

Which of the following is not true about sound waves?

40 / 60

Why does the flow rate increase more slowly in turbulent flow compared to laminar flow?

41 / 60

Which principle explains how different frequencies affect different parts of the cochlea?

42 / 60

What is the main biophysical role of the ossicles in hearing?

43 / 60

Please select types of ultrasound image resolution correctly.

44 / 60

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

45 / 60

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

46 / 60

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

47 / 60

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

48 / 60

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

49 / 60

What is the maximum frequency audible to human ear?

50 / 60

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

51 / 60

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

52 / 60

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

53 / 60

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

54 / 60

What is the frequency range of diagnostic imaging using ultrasound?

55 / 60

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

56 / 60

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

57 / 60

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…………………?

58 / 60

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

59 / 60

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

60 / 60

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

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