Lavin Ch 16
Any positioning device(s) superimposed on an area of interest must be radiodense.
Any positioning device(s) superimposed on an area of interest must be radiolucent.
Disk spaces must be near parallel to the table top for a diagnostic radiograph of the vertebral column.
Using positioning devices under the thoracolumbar area is usually necessary for a lateral view of the spine.
Base of the skull, entire cervical spine, and first few thoracic vertebrae
Base of the skull and first few thoracic vertebrae
Base of the skull and cervical vertebrae
Skull, cervical vertebrae, and first few thoracic vertebrae
CS-6
C6-7
T2-3
T-1 (thoracic inlet)
Humeri are parallel.
The heart is parallel on either side of the thoracic spine
The sternum is superimposed over the thoracic spine
The sixth rib is superimposed over the scapulo- humeral joint.
For a flexed lateral view of the cervical spine, the head should be pulled cranially.
For an extended lateral view of the cervical spine, the head should be pulled caudally.
For a flexed lateral view of the cervical spine, the head is pulled caudally.
For an extended lateral view of the cervical spine, the head is extended rostrally.
Seventh thoracic vertebra
Sixth thoracic vertebra
Eighth thoracic vertebra
Thickest area of the thorax
Tll-L3
Tll-L2
T12-L2
All of the thoracic and lumbar vertebrae
Pulled cranially
Pulled caudally
Frog-leg
The limb closest to the cassette is pulled slighdy cranially
30 degrees toward the tail
20 degrees toward the head
30 degrees toward the head
40 degrees toward the tail
Under the sacrum
In the Bucky tray
On the tabletop
Perpendicular to the table top