Test 2 Flashcards
Where is the CR centered for a PA chest projection on an adult?
T-7
Which body habitus most often requires a landscape alignment of the image receptor (IR)?
Hypersthenic
Situation: A patient enters the ER with a pleural effusion in the right lung. He is weak but can stand. Which positions of the chest would you perform for this patient?
An erect PA and right lateral
A radiograph of a PA chest demonstrates significant asymmetry of the SC joints. The right SC joint is much farther from the mid sternum as compared to the left. Which specific positioning error is present:
Left side rotation or LAO
A radiograph of a lateral chest demonstrate the posterior ribs are not superimposed. There is a separation of 1” (2.5 cm). What type of positioning error is present? Should this projection be repeated?
There is rotation of the patient. Yes, the projection should be repeated.
Situation: A patient comes to the ER with severe rib injuries on the right thorax. The ER physician suspects a pneumothorax. The patient comes from an extended care facility and hasn’t stood up for two years. Which position would best demonstrate the pneumothorax?
Left lateral decubitus
A radiograph demonstrates an oblique projection of the chest. It demonstrates that the right thorax is elongated and the left thorax is foreshorten. List both positions that would produce this radiographic appearance.
RPO and LAO
Situation: A patient comes to radiology with a possible mass under the left clavicle. The PA and left lateral projections are inconclusive. The patient has equilibrium issues and gets dizzy when leaning backwards. What projection could you perform that would demonstrate this possible mass?
AP semi-axial with a 15 to 20 degree cephalic CR angle.
Situation: This patient may have inhaled a marble in the airway. Which projections would be performed to determine if the foreign body is in the airway or esophagus?
PA and left lateral erect positions
Where would you center the CR for an AP portable chest projection?
3-4 inches below jugular notch
Which of the following structures is not within the mediastinum?
- heart
- thymus
- great vessels
- thyroid
Thyroid gland
Which of the following pathologies of the chest is when free air enters the pleural space and prevents normal expansion of lung?
Pneumothorax
Situation: A patient enters the ER due to chest trauma. She is a 36 y/o ambulatory female. The erect PA and Left lateral are taken. The PA reveals a small possible pneumothorax near the right apex. But the physician is unsure. What additional projections can be taken to rule-out a small pneumothorax?
Inspiration and expiration PA
Situation: A patient enters the ER with a know history of situs inversus. A pre-operative chest exam is order. The patient can stand and is ambulatory. Which positioning routine would be ideal for this patient?
PA and right lateral
What is the name of the upper, rounded region of the chest?
Apices
What is the name of the structure that prevents aspiration of food and fluids into the larynx?
Epiglottis
List the structures found in the mediastinum
Heart, esophagus, trachea, thymus gland, great vessels
Which structure of the respiratory system is common to both air and food?
Pharynx
Which bony structure is palpated and located at C7
Vetebra prominens
Which of the following structures is located most inferior?
Apices
Hilum
Carina
Costophrenic angle
Costophrenic angle
List the two layers of the pleura
parietal and pulmonary (visceral)
List three of the great vessels of the chest
Superior vena cava, inferior vena cava, Aorta, pulmonary arteries, pulmonary veins
The pulmonary veins bring oxygenated blood from lungs to the heart.
True
Which vertebral level does the xiphoid process (tip) correspond?
T9-10, 9th or 10th thoracic vertebral level
Which side is elongated for LPO, RPO, LAO and RAO
LPO - Left
RAO - left
RPO - Right
LAO- Right
When there is possible fluid in the lungs, the affected side is _____, when there is free air the affected side is ______
down, up
What is TB
Airborne disease from bacteria Myobacterium Tuberculosis
How can you tell on a radiography that a patient has TB
You can see an enlarged hilar region on the lateral
Who is affected by primary and secondary TB?
primary - children
secondary - adults
what is atelectasis
lung collapse as a result of obstruction of bronchi or puncture
True or false - Atelectasis is life threatening
false
How do you distinguish between atelectasis and pneumothorax
atalectasis - mediostinal is pushed toward the collapsed lung
Pneumothorax - mediostinal is pushed away from the collapsed lung
what are the key indicators consistent of diagnosis for atelectasis ?
radiodense region of collapsed lungs, mediostinal shift towards the collapsed lung, elevation of the diaphragm on the side of the collapsed lung
If a patient can stand what position would you use for diagnose an atelectasis ?
PA and an affected side lateral
If a patient cannot stand what position would you use for diagnose an atelectasis ?
decubitus with affected side up
what is a pneumothorax?
air or gas in the pleural cavity, which can cause full or partial lung collapse
what are the most common reasons for a pneumothorax
COPD or trauma
Patient has a suspected pneumothorax, patients pain is on the right side, the patient can stand, what position would you radiograph?
PA and right lateral
Patient has a suspected pneumothorax, patients pain is on the right side, the patient cannot stand, what position would you radiograph?
Left lateral decubitus