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DXI CHEST EXAM QUESTIONS AND ANSWERS
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DXI CHEST EXAM QUESTIONS AND ANSWERS
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DXI CHEST EXAM QUESTIONS AND ANSWERSWhat should be visible on a chest X-ray - ANSWER Both clavicles down to the
vertebrae 9-10 posterior/ 7 anterior
What technical factor can make X-rays to lucent - ANSWER To many mAs will
make X-rays more lucent
What 4 things must you look at in a lateral Chest X-Ray - ANSWER Retrosternal
Clear space
Retrocardiac Clear space
Hilum
Posterior "gutter" or costophrenic angle
What are 5 patterns to assess in chest x-ray - ANSWER Interstitial - most difficult
to detect
Consolidation - alveolar pattern (air space disease)
Mass - or nodule
Airway
--Too little air (under-inflated; collapse)
--Too much air (over-inflated)
Extra-parenchymal
What is a normal cardia:thoracic ratio - ANSWER 1:2
T/F the corina angle should be > 90 degrees - ANSWER True
A costophrenic angle that is not sharp could indicate - ANSWER some kind of
fluid build up
What is the term for abnormal gas collection below the diaphragm - ANSWER
pneumoperitoneum
,At what is costocartilage calcification normal?
What can cause it to calcify early? - ANSWER 30, if it is before think some form
of metabolic disease such as Grave's or Chronic Renal disease
T/F Pectus extivatum can be observed on a P-A chest x-ray - ANSWER True, due
to increased bone density
What is a AKA for consolidation - ANSWER Air-space
or
Alveolar pattern
What has occured when consolidation is present in the lungs - ANSWER The air
normally present within the terminal airspace is replaced by a material of soft tissue
density (blood, pus, water, protein or cells)
What are key findings on a x-ray of the chest - ANSWER 1. Ill-defined
homogeneous opacity obscuring vessels
2. Silhouette sign: loss of lung/soft tissue interface
3. Air-bronchogram
4. Extension to the pleura or fissure, but not crossing it
5. No volume loss
What 2 things must be present in the silhouette sign - ANSWER The disease
process must have the same density as the normal structure
The disease process must be in anatomical contact with the normal structure.
If a silhouette sign is observed in the right upper mediastinal area which portion of
the lung is causing the silhouette? - ANSWER Right upper lobe
If a silhouette sign is observed in the right middle lobe which portion of the lung is
causing the silhouette? - ANSWER Right Atrium
If a silhouette sign is observed in the left upper lobe which portion of the lung is
causing the silhouette? - ANSWER Aortic knob/knuckle
, If a silhouette sign is observed along the left heart border which portion of the lung
is causing the silhouette? - ANSWER Left lingula
If a silhouette sign is observed in the hemidiaphragms which portion of the lung is
causing the silhouette? - ANSWER Lower lobes
What is the air bronchogram sign? - ANSWER When the surrounding lung is filled
with a water-density pathology, the bronchi appear as a lucent tube traversing the
region of consolidation.
Air bronchogram is associated with which pattern in the chest x-ray - ANSWER
Consolidation
Conditions necessary for a air bronchogram are - ANSWER The bronchi must be
present
The bronchi must have air within them
The surrounding lung tissue must be of water density
--Pneumonia
--Pulmonary edema
What are possible DDX of consolidation - ANSWER 1. Blood
2. Pus
3. Water
4. Protein
5. Cells
T/F Lobar pneumonia is caused by bacterial. In a patient with cough and fever. -
ANSWER True, bacterial not viral
Peripheral consolidation in a patient with acute shortness of breath with low
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