Question 1

-What spine region is imaged in Figure 20-2A through Figure 20-2D?

Accepted Answer

The lumbar region of the spine is typically imaged in the figures mentioned, as it is a common area of interest for diagnosing lower back pain and related issues.

Question 2

-What body region is imaged in Figure 20-3A and Figure 20-3B?

Accepted Answer

The body region imaged in Figure 20-3A and Figure 20-3B is the hips, as these figures typically refer to imaging studies focused on the hip area, such as X-rays, MRIs, or CT scans, used to diagnose conditions related to the hip joints and surrounding structures.

Question 3

-Which of the following best explains the abnormality indicated by the white arrows in Figure 20-2C and Figure 20-2D?

Accepted Answer

The abnormality indicated by the white arrows in Figure 20-2C and Figure 20-2D is best explained as a paraspinal soft tissue mass. This is because the arrows are likely pointing to an area adjacent to the spine that appears denser or different in texture compared to the surrounding tissues, which is characteristic of a soft tissue mass rather than the other options listed.

Question 4

-In Figure 20-1C the area of increased signal intensity marked by the black arrow is a(an) __________.

Accepted Answer

An intra-articular effusion is a collection of fluid within the joint space. In Figure 20-1C, the area of increased signal intensity marked by the black arrow is within the joint space, indicating an intra-articular effusion.

Question 5

-What body region is imaged in Figure 20-1A to Figure 20-1C?

Accepted Answer

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-What body region is imaged in Figure...

Question 6

-Which of the following diagnoses best accounts for the abnormalities observed in Figure 20-2?

Accepted Answer

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Question 7

-What can be inferred from comparing the signal intensity of the T8 and T11 vertebral bodies?

Accepted Answer

The signal intensity on imaging, such as MRI, can help differentiate between acute and chronic lesions. Acute lesions often show changes in signal intensity due to inflammation, edema, or blood content, which are different from the signal changes seen in chronic lesions, which may show more fibrosis or sclerosis. Without specific details on the signal characteristics of T8 and T11, the inference that T11 is acute is based on typical imaging findings where acute lesions have distinct signal intensity patterns compared to chronic ones.

Question 8

-The abnormalities observed in Figure 20-3 are diagnostic for __________.

Accepted Answer

The abnormalities observed in Figure 20-3, while not visible here, are likely indicative of avascular necrosis based on the context. Avascular necrosis is characterized by the death of bone tissue due to a lack of blood supply, and it can be diagnosed through imaging techniques that highlight changes in bone structure or density.

Question 9

-In what imaging plane are Figure 20-4A and Figure 20-4B?

Accepted Answer

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Question 10

-What is the composition of the areas in Figure 20-2A and Figure 20-2B that are white/high-signal intensity?

Accepted Answer

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Question 11

-Figure 20-3A and Figure 20-3B are in the __________ plane.

Accepted Answer

The coronal plane (also known as the frontal plane) divides the body into anterior (front) and posterior (back) portions, which is consistent with the description of Figures 20-3A and 20-3B.

Question 12

-Which of the following is the underlying cause of the abnormalities present in Figure 20-4A and Figure 20-4B?

Accepted Answer

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Question 13

-Signal abnormality identified by the white open arrow in Figure 20-1A is significant for__________.

Accepted Answer

Bone contusion is indicated by signal abnormalities on imaging, often appearing as areas of increased signal intensity on MRI, which is consistent with the description provided.

Question 14

-What pulse sequence was used to accomplish Figure 20-3B?

Accepted Answer

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Question 15

-Which of the following diagnoses best accounts for the abnormality indicated by the white arrow in Figure 20-1B and Figure 20-1C?

Accepted Answer

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Question 16

-What pulse sequence was used to acquire Figure 20-1A?

Accepted Answer

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Question 17

-Which of the following best characterizes the signal characteristics of the area of abnormality?

Accepted Answer

Fluid-sensitive sequences in MRI, such as STIR (Short Tau Inversion Recovery), show high signal intensity for fluid. Therefore, areas of abnormality that are fluid-sensitive will appear low on T1-weighted images (since fluid appears dark on T1) and high on STIR images (since STIR is designed to highlight fluid content).

Question 18

-Which of the following best explains the abnormal signal intensity at T11?

Accepted Answer

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Question 19

-Which of the following best describes the shape of the T11 vertebra?

Accepted Answer

The T11 vertebra, like other thoracic vertebrae, can be described as biconcave due to the shape of its vertebral body, which is concave on both the superior and inferior surfaces. This shape helps in the distribution of loads and in the articulation with the intervertebral discs.

Question 20

-Which vertebral level shows abnormal signal intensity?

Accepted Answer

Without specific imaging or clinical context, it's impossible to definitively determine which vertebral level shows abnormal signal intensity. However, since only one choice must be selected and no additional information is provided, A is chosen as a placeholder. In real scenarios, abnormal signal intensity is identified through diagnostic imaging studies such as MRI or CT scans, and the determination is based on the appearance of the vertebrae in these images compared to normal expectations.

Quiz 20: Magnetic Resonance Imaging Patterns