Skull transillumination test Neonatal, pediatric skull bone plate is thin, the cardia is not closed, when there is a large amount of liquid under the subdural, it can transmit a part of the light and diffract around. 1. The child shaves, washes the scalp, and checks in the dark room. 2. The child is quiet and takes a supine position. Use a common large flashlight as the light source, take a dark sponge with a thickness of about 1cm-1.5cm and cut it into a circle with a width of about 1cm. The outer ring diameter is slightly larger than the front end of the flashlight. 3. Put the sponge ring on the scalp of the child, press the sponge at the light-emitting end of the flashlight, turn on the flashlight switch, and project the different parts such as the forehead, pillow and crotch area. 4. Observe the size of the outer aperture of the flashlight when shooting, and whether there is any defect.

Basic Information

Specialist classification: growth and development check classification: X-ray

Applicable gender: whether men and women apply fasting: not fasting

Tips: Wash your hair, don't apply oil, keep it clean. Normal value

1. Immature child 3cm.

2. Newborn 2cm.

3.2 months to 12 months baby 1.5cm.

4.13 months to 18 months of children 0.5cm.

Clinical significance

The result is abnormal:

1. Localized subdural effusion is positive in this test, and the location and extent of effusion can be determined. Follow-up can also be followed to observe the effusion and growth.

2. The hydrocephalus has extensive bilateral subdural effusion, the test is positive, the same side and the opposite side, and even the entire head is transparent.

3. If the subdural effusion is bloody or purulent, this test may be negative, depending on the concentration of the effusion.

Hydrocephalus, subdural effusion.

Head trauma.

Adapt to the brain hydrocephalus, effusion under the hard mold.

Precautions

Forbidden before examination: Shave the hair around the child's cardia, wash your hair, do not apply oil, keep it clean.

Required for inspection: in the darkroom.

Inspection process

1. The child shaves, washes the scalp, and checks in the dark room.

2. The child is quiet and takes a supine position. Use a common large flashlight as the light source, take a dark sponge with a thickness of about 1cm-1.5cm and cut it into a circle with a width of about 1cm. The outer ring diameter is slightly larger than the front end of the flashlight.

3. Put the sponge ring on the scalp of the child, press the sponge at the light-emitting end of the flashlight, turn on the flashlight switch, and project the different parts such as the forehead, pillow and crotch area.

4. Observe the size of the outer aperture of the flashlight when shooting, and whether there is any defect.

Not suitable for the crowd

Inappropriate crowd: head trauma.

Adverse reactions and risks

Nothing.