Terms in this set (35)
Which of the following technical factors is ideal for adult chest radiography?
- 100 kV, 200 mA, 1/20 sec, 60-inch (153 cm) source image receptor distance (SID)
- 120 kV, 800 mA, 1/40 sec, 72-inch (183 cm) SID
- 125 kV, 400 mA, 1/40 sec, 40-inch (102 cm) SID
- 120 kV, 600 mA, 1/60 sec, 60-inch (153 cm) SID
Terms in this set (75)
Which of the following technical factors is recommended for an adult chest radiography?
a.) 100 kV, 200 mA, 1/20 sec, 60-inch SID
b.) 120 kV, 800 mA, 1/40 sec, 72-inch SID
c.) 125 kV, 400 mA, 1/40 sec, 40-inch SID
d.) 120 kV, 600 mA, 1/60 sec, 60-inch SID
How many posterior ribs should be seen above the diaphragm for a well inspired PA chest projection?
A good inspiration on a PA CXR shows at least 9 posterior ribs.
How is symmetry of a PA projection of the chest determined?
The lungs, mediastinum and bony thorax (ribs, spine and clavicles) need to be demonstrated. Some spine detail is visualised through the heart and mediastinum. Symmetry is checked by having the medial ends of the clavicle equidistant from the spinous process.
At what level should the central ray be centered for anteroposterior ribs above the diaphragm?
The central ray (CR) for an anteroposterior (AP) supine, adult chest projection, should be centered: 3 to 4 inches (8 to 10 cm) below the jugular notch.
How many degrees should the patient be rotated for PA oblique projections of the chest to evaluate the lungs?
The central ray is centered at the level of the T7 vertebra. Positioning for oblique radiographs requires rotation at approximately 45 degrees.