Ch.2 review C

Where is the CR places for a lateral projection of the upper airway?

C6-C7; midway between thyroid cartilage & jugular notch

To prevent the clavicles from obscuring the apices on an AP projection of the chest, the CR should be angled ________ so that it is perpendicular to the ________

Caudad (+-5°) Sternum

An erect PA radiograph aids the patient to achieve full inspiration & helps to prevent _______&________ of the pulmonary vessels

Engorgement & hyperemia

True/False A grid is not recommended for an LPO projection of the adult chest

False

True/False No lead shielding is necessary for male patients or women older than 65 during radiographic imaging of the chest

False

How much separation of the posterior ribs on a lateral chest projection indicates excessive rotation from a true lateral position?

Greater than 1cm (1/2-3/4 inches)

For certain studies of the heart, the ______ anterior oblique requires a rotation of ___ degrees

LAO 60°

Which posterior oblique projection would best demonstrate the left lung

LPO

Which specific position would be used if a patient were unable to stand but the physician suspected that the patient has fluid in the left lung?

Left lateral decubitus

What are the recommended patient instructions when performing an erect PA chest on a female patient with large pendulous breasts?

Lift breast up & outward & then remove her hands as she leans against the IR to keep them in position

Why is a PA chest preferred to an AP projection?

Places the heart closer to the image receptor to reduce magnification of the heart

What is the name of the condition characterized by fluid entering the pleural cavity?

Pleural effusion

What is the name of the condition characterized by free air entering the pleural cavity?

Pneumothorax

Which anterior oblique projection would best demonstrate the left lung

RAO

Which specific position would be used if the patient were unable to stand but the physician suspected that the patient had free air in the pleural cavity?

Right lateral decubitus

What circumstances or clinical indications suggest that an AP lordotic projection should be ordered?

Rule out calcifications or masses beneath the clavicles

The shoulders need to be rolled forward for the PA projection to allow the _________ to move laterally & be clear of the lung fields

Scapula

Careful collimation during a chest radiograph will improve image quality by decreasing

Scatter radiation

The CR is placed at what vertebra level for a PA chest projection?

T7

Why should a left lateral be performed unless department protocol indicates otherwise?

A left lateral better demonstrates the heart region

What position/projection would be used for a patient who is too ill or weak to stand for an AP lordotic projection?

AP semi axial projection, CR 15-20° cephalad