Biophysique Test

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Biophysique Test

 

1 / 60

En radiothΓ©rapie, un plan de traitement est Γ©tabli Γ  l’aide d’un scanner dosimΓ©trique. Le faisceau de traitement est ensuite dΓ©fini par un collimateur multilames. Quel est le rΓ΄le du collimateur multilames ?

2 / 60

Un physicien mΓ©dical mesure une activitΓ© de 3,7 Γ— 10⁹ Bq autour d’une source de Cobalt-60. Quel type de rayonnement nΓ©cessite la plus grande Γ©paisseur de protection ?

3 / 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 ?

4 / 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 ?

5 / 60

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

6 / 60

What is the main component of transducer?

7 / 60

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

8 / 60

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

9 / 60

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

10 / 60

What is the number of cycles per unit of time?

11 / 60

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

12 / 60

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

13 / 60

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

14 / 60

Please select types of ultrasound image resolution correctly.

15 / 60

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

16 / 60

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

17 / 60

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

18 / 60

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

19 / 60

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

20 / 60

What is the frequency range of diagnostic imaging using ultrasound?

21 / 60

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

22 / 60

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

23 / 60

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

24 / 60

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

25 / 60

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

26 / 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. De quel Γ©lΓ©ment s’agit-il ?

27 / 60

On s’intΓ©resse Γ  l’étude la dΓ©sintΓ©gration Ξ², par example, la transformation du 32P en 32S par Γ©mission Ξ²-.
DΓ©terminez l’Γ©nergie libΓ©rΓ©e exprimΓ©es en MeV au cours de la transformation. OΓΉ M32P 31,98403 uma, M 32S =
31,98220 uma et 1 uma 931,5 MeV

28 / 60

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

29 / 60

Le schΓ©ma de dΓ©croissance de cet isotope est prΓ©sentΓ© ci-dessous. Identifiez le type de dΓ©croissance.

30 / 60

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

31 / 60

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

32 / 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

33 / 60

Quel est l’énergie cinΓ©tique d’électron Compton lors de l’interaction des photons X ou ΰͺ» avec des matiΓ¨res ?

34 / 60

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

35 / 60

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

36 / 60

Quelles sont les Γ©nergies principales qui ont lieux lors de l’annihilation de la paire positron-
Γ©lectron ?

37 / 60

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

38 / 60

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

39 / 60

es 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 ΰͺ»2 ?

40 / 60

On considΓ¨re de la diffusion Compton d’un photon d’énergie h sur un Γ©lectron au repos. Soit h’ l’énergie du photon
aprΓ¨s qu’il soit diffusΓ© d’un angle . Quelle est l’équation de conservation de l’énergie, si l’angle 0 ?

41 / 60

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

42 / 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.

43 / 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.

44 / 60

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

45 / 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±.

46 / 60

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

47 / 60

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

48 / 60

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

49 / 60

What does a sound intensity of 120-130 dB correspond to?

50 / 60

How do spiders primarily detect sounds?

51 / 60

What is the role of the basilar membrane in hearing?

52 / 60

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

53 / 60

Which part of the ear sends sound information to the brain?

54 / 60

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

55 / 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?

56 / 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?

57 / 60

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

58 / 60

A 60-year-old female with a history of severe headaches and dizziness is referred for an MRI to rule out any intracranial pathology. During the pre-MRI screening, it is discovered that she has a pacemaker implanted.

2. Which of the following is a contraindication for performing an MRI in this clinical case?

59 / 60

A 40-year-old male presents with persistent knee pain following a sports injury. The physician orders an MRI to assess the extent of the damage to the soft tissues and cartilage.

6. Which of the following components of the MRI machine is primarily responsible for generating the magnetic field used in this clinical case?

60 / 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?

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