transillumination


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transillumination

[‚tranz·ə‚lü·mə′nā·shən]
(engineering)
Indirect lighting on a console panel that uses edge and backlighting techniques on clear, fluorescent, or layered plastic materials.
Transmission of light through sections of material in order to enhance inspection for deviations in quality.
(optics)
Illumination of translucent material by light being transmitted through the material from the rear.

transillumination

The illumination of a material from the rear by light which is transmitted through the material.
References in periodicals archive ?
Laser transillumination imaging for determining wood defects and grain angle.
The endotracheal tube is carefully withdrawn together with the FOB until transillumination is obtained at the selected operation site at the front of the neck.
The best way to see a transillumination defect is to shine a beam of light co-axially through the pupil, such that the slit lamp beam height is shorter than the pupil diameter; this should be done with a bright light and the room light dimmed to improve the chances of this showing up.
The clinical cases illustrated in this work emphasize the major role of the new classification in insuring a more predictable treatment showing the importance of Transillumination in identifying the location but to significantly evaluate the opacity of the lesion.
This technology uses a laser diode of wavelength 780 nm for transillumination of teeth.
Note the presence of enamel cracks (white arrow), observed under transillumination, which could constitute a possible pathway for chromatogenic substances (b).
A normal axial length, provided by biometry, excluded microphthalmos [12]; nystagmus and iris transillumination were absent which eliminates the probability of ocular albinism [13].
Given the suspicion of epididymal cyst (EC), after positive transillumination, ultrasound was requested.
The main inclusion criteria was an existing and detectable pseudoexfoliation syndrome with its characteristic findings in the anterior segment which includes the typical PXF disc with its fluffy deposits on the anterior lens capsule, the transillumination defect on the pupillary borders, and the poor pupillary dilation (maximum pupil diameter 3.5 mm in spite of medical-induced mydriasis).
The electrode placement is assisted with a transillumination technique, and also is based on known neuroanatomic landmarks for branches of cranial nerves V VII, and IX, along with branches of the occipital nerve (Clin Med Diagnostics.
The electrode placement is assisted with a transillumination technique, and also is based on known neuroanatomic landmarks for branches of cranial nerves V, VII, and IX, along with branches of the occipital nerve (Clin Med Diagnostics.
Before securing the explant (AJL Ophthalmic) to the superotemporal region, a fiber-optic light attached to the explant was used to check where the explant contacted the posterior pole by transillumination (Figure 3).