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MN Exam Chest Module
MN State Exam Prep
Question | Answer |
---|---|
2. What structure separates the thoracic cavity from the abdominal cavity? | The diaphragm |
What organs can be found within the mediastinum? | Trachea and Heart |
There lobes are present in which lung? | Right |
5.What is the name of the upper portion of the lung? | Apex |
The inferior lateral corners of the lungs, visible on a PA chest radiograph, are called _____? | costophrenic angles |
When taking a PA projection of the chest, the recommended SID is | 72 inches |
What is the purpose of the 72-inch SID used for chest radiography? | Minimizes magnification of the heart shadow |
Why is it important to use an upright position for chest radiography? | *to demonstrate air-fluid levels *this position allows maximum lung expansion *this position minimizes magnification of the heart |
10.In chest radiography, which body habitus is best imaged by placing the 35 x 43 cm IR crosswise in the upright grid cabinet? | Hypersthenic |
What technique is desirable for chest radiography? | High kVp, high mA, and short exposure time |
What is the purpose of rotating the patient's shoulders anteriorly for the PA projection of the chest? | This motion rotates the scapulae out of the lungs. |
Where does the central ray enter the patient for the upright, PA projection of the chest? | Midsagittal plane at the level of T7 |
What is the proper placement of the arms for the upright lateral projection of the chest? | Arms raised over the head, hands grasping opposite elbows |
15.What are the proper patient instructions for the PA projection? | Stop breathing after second deep inspiration |
Lateral projections of the chest are taken with the left side against the IR because: | Magnification of the cardiac silhouette is reduced with the left side near the IR. |
How much should the central ray be angled cephalad for an AP axial projection of the chest if the patient cannot assume the lordotic position? | 15 degrees |
which chest projection and position are needed to demonstrate free pleural fluid along the dependent chest wall? | AP, lateral decubitus |
What projection is best for demonstration of the apices (apex plural form - top tip of an organ) of the lungs without body superimposition? | AP axial, lordotic position |
Why is a grid used for routine chest radiography? | To reduce scatter fog caused by the use of high kVp |