X-RAY OF THORACIC SPINE

X-ray Thoracic Spine A/P View

Thoracic Vertebrae AP (Supine)

Region: thoracic vertebrae, intervertebral space, pedicle, spinous process, costovertebral joint

Pathology: fracture, scoliosis, kyphosis, arthritis, herniated intervertebral disc of thoracic vertebrae

SID: 100 cm (40 inches)

Central Ray: perpendicular beam directed at the 7th thoracic vertebra (T7)

Respiration: suspended expiration

Position

1. The patient is in a supine position.
2. Place the 7th thoracic vertebra at the center of image receptor (IR), and align the IR parallel to the spinal column.
3. Flex hips and knees and fully attach the back on the table to alleviate the curvature of the of the thoracic vertebrae.
4. Place the shoulder about 2.5 cm inferior to the upper margin of the IR.

Evaluation

1. Vertebral body from 1st thoracic vertebra to 12th thoracic vertebra should be aligned in a straight line.
2. Spinous process should be aligned at the center of horizontal axis of the image.
3. Transverse process should be symmetric to the vertical axis.

kVp-80, mAs-20

Tip

1. Support the back with a pillow to reduce recurvation of thoracic vertebra.
2. 7th thoracic vertebra is located 8 ~10 cm below jugular notch or 5 cm below sternal angle.
3. In order to use heel effect, place the head anode of X-ray.