chest Flashcards
preferred landmark for locating the central ray on a PA chest.
vertebra prominens which corresponds to the level of the apex of the lungs
For female (chest PA)
7 inches below
For male (chest PA)
8 inches below
CR LEVEL FOR FOR CHEST (T7)
same as the inferior angle of the scapula
recommended location landmark for location of central ray for chest AP projection
easily palpated jugular notch
level of T7 is __ inches below jugular notch
3-4
CR of chest PA
perpendicular to level of T7
SID of chest PA
72 inches (183 cm) to decrease magnification of the heart and to increase recorded detail of thoracic structures.
- Chin raised and resting against image receptor.
- Flex arms and back of the hands low on the hips with palms out so that scapula will move laterally and will not superimpose over the lung fields.
- Depress shoulder to move clavicles below apices and rotated forward.
- Exposure is made at the end of the 2nd full
inspiration to ensure maximum expansion of the lungs.
CHEST
PA PROJECTION
To demonstrate pneumothorax and foreign body, radiographs are made at (CHEST PA)
- end of full inspiration and expiration
- expiration chest will clearly demonstrate a pneumothorax.
- Hilum in the center of the image.
- Oblique and horizontal fissure fissures.
CHEST
LATERAL PROJECTION
demonstrate the heart, aorta and left sided pulmonary lesions.
Left lateral position
demonstrate right sided pulmonary lesions.
Right lateral position
- used to demonstrate the trachea,
bronchial tree, heat and aorta free from
superimposition of the vertebral column. - Best demonstrates side farthest from image receptor.
CHEST
PA OBLIQUE PROJECTION
RAO AND LAO POSITIONS
Routine position.
45 degrees obliquity
studies of the heart (LAO)
60 degrees obliquity
better visualization of various areas of the lungs for possible pulmonary lesions.
15-20 degrees
- Maximum area of the right lung.
- Anterior portion of left lung superimposed by the spine
LAO
- Maximum area of the left lung.
- Anterior portion of right lung superimposed by the spine
- Best image of the left atrium
RAO
Best demonstrates side nearest to image receptor.
CHEST
AP OBLIQUE PROJECTION
RPO AND LPO POSITIONS
- Maximum area of the right lung.
- Left lung appears shorter because of magnification of the diaphragm.
RPO POSITION
- Maximum area of the left lung.
- Right lung appears shorter because of magnification of the diaphragm.
LPO POSITION
Demonstrates air-fluid levels
CHEST
LATERAL DECUBITUS POSITION
demonstrate amounts of fluids in the pleural cavity which would be demonstrated with the patient lying on the __ side
affected side
demonstrate amounts of air in the pleural cavity which would be demonstrated with the patient lying on the ___ side.
unaffected
patient must remain in this position ____ mins before exposure to achieved best visualization so that fluid may settle and air to rise.
5 minutes
- Top of the IR 3-4 inches above shoulder.
- Patient standing 1 foot away from the vertical cassette holder (VCH), facing forward and leaning back with shoulders, neck and back of head against IR.
- Used to demonstrate right middle lobe pneumothorax.
- Preferred apical position for male patient.
- Pulmonary apices below clavicles
PULMONARY APICES
LORDOTIC POSITION
LINDBLOM METHOD
CR of LINDBLOM METHOD
perpendicular to mid sternum
