Ch2 Chest, Review Exercise C

20) An erect chest PA radiograph aids the patient to achieve full inspiration and helps to prevent ---- and --- of the pulmonary vessels

Engorgement, hyperemia

19) True / False : No lead shielding is necessary for male patients or women greater than age 65 during radiographic imaging of the chest.

False

15) True / False : A grid is not recommended for a LPO projection of the adult chest.

False ( a grid is recommended)

5) How much separation of the posterior ribs on a lateral chest projection indicates excessive rotation from a true lateral position? --------- ( note: Less separation than this is caused by the divergent x-rays.)

Greater than 1 cm ( 1/2 to 3/4 inch)

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

Left lateral decubitus

13 b) Which posterior oblique projection would best demonstrate the left lung ----- RPO or LPO?

Left posterior oblique

14) For certain studies of the heart, the ------ ( right or left) anterior oblique requires a rotation of ----.

Left, 60 degrees

16) Where is the central ray placed for a lateral projection of the upper airway?

Level of C6 -C7, midway between thyroid cartilage and jugular notch

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

Lift the breasts up and outward and then remove her hand as she leans against the chest board ( image receptor) to keep them in the position.

1) Why is a PA chest preferred to an AP projection?

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

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

Pleural effusion

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

Pneumothorax

13 a) Which anterior oblique projection would best demonstrate the left lung --- right anterior oblique (RAO) or left anterior oblique (LAO)?---------

Right anterior oblique is the best projection to demonstrate the left lung.

10) which specific position would be used if the patient were unable to stand but the physician suspected the patient had free air in the left pleural cavity?

Right lateral decubitus ( affected side up)

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

Rule out calcifications or masses beneath the clavicles

3) The shoulders need to be rolled forward for the PA projection to allow the ---- to more laterally and be clear of the lung fields.

Scapulae

17) Careful collimation during a chest radiograph will improve image quality by decreasing ----- radiation to the IR.

Scatter

2) The CR is placed at the level of the --- vertebra for a PA chest projection.

T 7

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

A left lateral better demonstrates the heart region

6) To prevent the clavicles from obscuring the apices on an AP projection of the chest, the central ray should be angle (A) -------( caudad or cephalad) so that it is perpendicular to the (B) ------.

A) Caudad (+- 5 degree) B) Sternum

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

AP semiaxial projection, central ray 15 to 20 degree cephalad