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(3) Musculoskeletal Imaging > S1_L3: Trauma & Review of Bones > Flashcards

S1_L3: Trauma & Review of Bones Flashcards

1
Q

TRUE OR FALSE: Trauma is the most common disorder of the musculoskeletal system evaluated by radiology.

A

True

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2
Q

TRUE OR FALSE: Fracture and dislocation are the most frequently encountered conditions, especially in the ER.

A

True

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3
Q

TRUE OR FALSE: Bone consists of osteoblasts embedded in an extracellular matrix made of inorganic minerals and organic collagen.

A

False, bone consists of osteocytes embedded in an extracellular matrix made of inorganic minerals and organic collagen.

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4
Q
  1. Resorbs bone that is not needed
  2. Immature bone cell; migrates to a particular area where it is needed
  3. Mature bone cell

A. osteocyte
B. osteoblast
C. osteoclast

A
  1. C
  2. B
  3. A
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5
Q

TRUE OR FALSE: The osteoblasts eventually become the osteocytes in bones.

A

True

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6
Q

TRUE OR FALSE: Oblique views at 90 degrees may suffice when perfect positioning is not possible.

A

True, this is to maintain the perpendicular relationship of the X-ray beam to the anatomy to the image receptor.

Note: Oblique views are applied when the injury is quite painful and movement exacerbates the severity of trauma.

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7
Q

Modified TF
A. CT scan is the initial diagnostic imaging of choice in trauma cases.
B. Conventional radiography is used to visualize areas of complex anatomy.

A

FF

A. Conventional radiography
B. CT scan

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8
Q

Modified TF
A. MRI may be used in traumatic cases.
B. MRI is used for the assessment of soft tissue injury.

A

FT

MRI is NOT applicable in life and death situations as patients may have metallic debris or implants in the body. Note: Magnets and metals do NOT mix together.

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9
Q

Modified TF: Trauma Radiology
A. Primary Trauma Survey is the initial imaging performed at the ER.
B. Secondary Trauma Survey is the follow-up imaging or further imaging investigation done when the patient is clinically stable.

A

TT

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10
Q
  1. To assess for hemothorax, pneumothorax, pulmonary contusion
  2. Assess gross instability, fractures, dislocations of the cervical spine

A. Cross-table lateral of the cervical spine
B. Anteroposterior (AP) chest
C. AP Pelvis

A
  1. B
  2. A
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11
Q

It can assess for pleural effusion in the lung, shifting of the lung/heart d/t increased air/fluid on one side.

A. Cross-table lateral of the cervical spine
B. Anteroposterior (AP) chest
C. AP Pelvis

A

B. Anteroposterior (AP) chest

Example: No aeration in the R lung, so the R lung is filled with fluid (whitish).

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12
Q

Case: 39 y/o female presents with disruption of the symphysis pubis (diastasis). Which imaging in the primary trauma survey would you use?

A. Cross-table lateral of the cervical spine
B. Anteroposterior (AP) chest
C. AP Pelvis

A

C. AP Pelvis

Note: Injures in the pelvic area may cause intense bleeding (due to the retroperitoneal space).

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13
Q
  1. For further assessment of the cranio-vertebral and cervico-thoracic area
  2. Additional test when you see a depression in the skull x-ray

A. Cervical CT scan
B. Cranial CT scan
C. Lateral thoracolumbar spine x-ray

A
  1. A
  2. B (The depression is typically seen in GCS 12-14, unconscious or lethargic patients after MVA)
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14
Q
  1. Applicable for a case of pain on mid-back area after traumatic incident reported
  2. Applicable for anterior cervical displacements with a fracture present

A. Cervical CT scan
B. Cranial CT scan
C. Lateral thoracolumbar spine x-ray

A
  1. C
  2. A
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15
Q

Used to assess intracranial bleeding that creates a dentiform structure on the wall, but the cranial wall is intact.

A. Cervical CT scan
B. Cranial CT scan
C. Lateral thoracolumbar spine x-ray

A

B. Cranial CT scan

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16
Q

Case: 17 y/o female c/o seeing blood in her urine. You suspect abdominal and pelvic organ injuries. Which test should be done?

A. Focused abdominal ultrasound / sonography for trauma (FAST)
B. Extremity x-ray
C. Chest, abdominal, and pelvic CT scan with/out contrast

A

C. Chest, abdominal, and pelvic CT scan with/out contrast

17
Q

It identifies free fluid in the peritoneal cavity which may be due to intraperitoneal bleeding or a ruptured spleen or liver

A. Focused abdominal ultrasound / sonography for trauma (FAST)
B. Extremity x-ray
C. Chest, abdominal, and pelvic CT scan with/out contrast

A

A. Focused abdominal ultrasound / sonography for trauma (FAST)

Note: It is also used when the pt complains of abdominal pain and has abdominal trauma and abdominal muscle guarding

18
Q

Case: 29 y/o patient presents with flail extremities during movement and complains of extreme pain. Which test should be done?

A. Focused abdominal ultrasound / sonography for trauma (FAST)
B. Extremity x-ray
C. Chest, abdominal, and pelvic CT scan with/out contrast

A

B. Extremity x-ray

18
Q

Two x-rays that are perpendicular to each other (90deg) are referred to as ____

A

orthogonal views

19
Q

TRUE OR FALSE: Radiographic positioning for trauma includes the joints above and below to assess for associated fractures, subluxations or dislocations.

A

True

20
Q

TRUE OR FALSE: The factors affecting the load capacity of bone are the physiological health of bone, geometric configuration, and type and rate of loading.

A

True

21
Q

Modified TF
A. Cortical bone is porous, loosely arranged bone.
B. Cancellous bone is compact, hard bone.

A

FF

A: Cancellous
B: Cortical

21
Q

Modified TF
A. Bone is a visco-elastic material.
B. Bone does not deform when physically loaded.

A

TF

B: Bone deforms when physically loaded and returns to original shape when the load is removed.

22
Q

TRUE OR FALSE: Bone is rigid enough to resist deformity, yet flexible enough to be subjected in enough stress to return to original shape.

A

True

23
Q

Modified TF
A. Minerals provide rigidity and strength to the bone.
B. Collagen provides flexibility and resistance to the bone.

A

TT

24
Q

Modified TF
A. Minerals are the organic components of bone.
B. Collagen is the inorganic component of bone (i.e., calcium, phosphorus).

A

FF

A: Collagen
B: Mineral

(3) Musculoskeletal Imaging (25 decks)

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