Difference Between T1 And T2 Weighted MRI!

1. Questions 44 through 48 refer to the figure below of a coronal CT reformat of the neck.

Which arrow points to the epiglottis?

A

B

C

D

E

The arrow pointing to D indicates the epiglottis. The epiglottis is a flap of cartilage located at the base of the tongue that prevents food and liquid from entering the trachea during swallowing. In the given figure, D is the only arrow pointing to a structure that resembles the shape and position of the epiglottis. Therefore, D is the correct answer.

Explanation

The arrow pointing to D indicates the epiglottis. The epiglottis is a flap of cartilage located at the base of the tongue that prevents food and liquid from entering the trachea during swallowing. In the given figure, D is the only arrow pointing to a structure that resembles the shape and position of the epiglottis. Therefore, D is the correct answer.

2. Matching

B

A

Submit

3. Questions 44 through 48 refer to the figure below of a coronal CT reformat of the neck.

Which arrow points tot he thyroid gland?

A

B

C

D

E

The arrow points to the structure that is identified as the thyroid gland.

Explanation

The arrow points to the structure that is identified as the thyroid gland.

4. Questions 36 through 39 refer to the figure below of a sagittal CT reformat of the pharynx.

Which arrow points to the hard palate?

A

B

C

D

In the given figure, the arrow labeled "A" points to the hard palate. The hard palate is the bony structure that forms the roof of the mouth and separates the oral and nasal cavities. It is located towards the front of the pharynx, as indicated by arrow A.

Explanation

In the given figure, the arrow labeled "A" points to the hard palate. The hard palate is the bony structure that forms the roof of the mouth and separates the oral and nasal cavities. It is located towards the front of the pharynx, as indicated by arrow A.

5. Questions 53 through 57 refer to the figure below of an axial, T1-weighted MRI of the neck.

Which arrow points to the levator scapulae muscle?

A

B

C

D

E

In the given figure of an axial, T1-weighted MRI of the neck, arrow A points to the levator scapulae muscle.

Explanation

In the given figure of an axial, T1-weighted MRI of the neck, arrow A points to the levator scapulae muscle.

6. Questions 20 through 23 refer to the figure below of an axial, T2-weighted MRI of the lumbar vertebra.

Which arrow points to the thecal sac?

A

B

C

D

The correct answer is A because it is pointing to the structure that represents the thecal sac in the axial T2-weighted MRI image of the lumbar vertebra. The thecal sac is a membrane-filled sac that surrounds the spinal cord and contains cerebrospinal fluid. In this image, arrow A is pointing to a clearly visible structure that is located in the center and has a similar signal intensity to the cerebrospinal fluid, indicating that it is the thecal sac.

Explanation

The correct answer is A because it is pointing to the structure that represents the thecal sac in the axial T2-weighted MRI image of the lumbar vertebra. The thecal sac is a membrane-filled sac that surrounds the spinal cord and contains cerebrospinal fluid. In this image, arrow A is pointing to a clearly visible structure that is located in the center and has a similar signal intensity to the cerebrospinal fluid, indicating that it is the thecal sac.

7. Questions 53 through 57 refer to the figure below of an axial, T1-weighted MRI of the neck.

Which arrow points to the middle scalene muscle?

A

B

C

D

E

The arrow pointing to E indicates the middle scalene muscle. The middle scalene muscle is one of the three scalene muscles located in the neck. It lies between the anterior and posterior scalene muscles.

Explanation

The arrow pointing to E indicates the middle scalene muscle. The middle scalene muscle is one of the three scalene muscles located in the neck. It lies between the anterior and posterior scalene muscles.

8. Questions 49 through 52 refer to the figure below of an axial, T1-weighted MRI of the sublingual glands.

Which arrow points to the genioglossus muscle?

A

B

C

D

The genioglossus muscle is the muscle responsible for protruding and retracting the tongue. In the given axial, T1-weighted MRI of the sublingual glands, arrow C points to the genioglossus muscle.

Explanation

The genioglossus muscle is the muscle responsible for protruding and retracting the tongue. In the given axial, T1-weighted MRI of the sublingual glands, arrow C points to the genioglossus muscle.

9. Questions 59 through 63 refer to the figure below of an axial CT of the brain.

Which arrow points to the basilar artery in the prepontine cistern?

A

B

C

D

E

In the given figure, arrow D points to the basilar artery in the prepontine cistern.

Explanation

In the given figure, arrow D points to the basilar artery in the prepontine cistern.

10. Questions 44 through 48 refer to the figure below of a coronal CT reformat of the neck

Which arrow points to the internal jugular vein?

A

B

C

D

E

The correct answer is B because it is pointing to the structure that is most consistent with the internal jugular vein based on its location and anatomical features. The internal jugular vein is located in the neck and runs parallel to the carotid artery. It is larger and more centrally located compared to the other structures shown in the figure. Therefore, arrow B is the most likely to be pointing to the internal jugular vein.

Explanation

The correct answer is B because it is pointing to the structure that is most consistent with the internal jugular vein based on its location and anatomical features. The internal jugular vein is located in the neck and runs parallel to the carotid artery. It is larger and more centrally located compared to the other structures shown in the figure. Therefore, arrow B is the most likely to be pointing to the internal jugular vein.

11. The lymph nodes of the neck can be classified or divided into how many levels or regions for ease of identification?

5

6

7

8

The lymph nodes of the neck can be classified into seven levels or regions for ease of identification. This classification helps in locating and evaluating the spread of diseases or infections in the neck area. Each level corresponds to specific anatomical landmarks and plays a crucial role in diagnosing and treating conditions related to the lymphatic system in the neck.

Explanation

The lymph nodes of the neck can be classified into seven levels or regions for ease of identification. This classification helps in locating and evaluating the spread of diseases or infections in the neck area. Each level corresponds to specific anatomical landmarks and plays a crucial role in diagnosing and treating conditions related to the lymphatic system in the neck.