TRANSILLUMINATION

Clinical use of transillumination.

An inexpensive device for transillumination.

Patients with cracked-tooth syndrome often present with a chief complaint of vague pains while eating that they cannot localize, making the diagnosis difficult. Frequently practitioners are unable to discover the cause of their symptoms, so treatment is delayed, which can result in apical propagation of the crack, leading to unrestorable vertical root fracture. Transillumination is a valuable a...

Cranial transillumination in early and severe malnutrition.

I . By means of a cranial transillumination method used in conjunction with lumbar and bregmatic punctures, an increase in the space which contains the cerebro-spinal fluid in the cranial region is suggested in children with severe marasmic malnutrition. 2. The results appear to indicate that this is due to a diminished brain size, creating a space in the interior of the cranium which secondari...

Femtosecond transillumination optical coherence tomography.

We describe a new technique, femtosecond transillumination optical coherence tomography, for time-gated imaging of objects embedded in scattering media. Time gating is performed with a fiber-optic interferometer with femtosecond pulses and coherent heterodyne detection to achieve a 130-dB dynamic range. A confocal imaging arrangement provides additional spatial discrimination against multiply s...

Albinisme oculocutané: iris en transillumination

L'albinisme regroupe un ensemble d'affections héréditaires liées à une anomalie de biosynthèse de la mélanine secondaire à un déficit variable en tyrosinase, enzyme impliquée dans la synthèse de ce pigment. La mélanine est élaborée dans des cellules spécialisées de la peau, des cheveux, de l'épithélium pigmenté de la rétine et au niveau de l'iris. L'examen à la lampe à fente d'un sujet albinos ...