Transillumination
The passing of a strong beam of light through a part of the body for medical inspection. A method of examination by the passage of light through tissues or a body cavity. A common use of transillumination is in infancy. The infant's skull should normally not transilluminate (let a beam of light pass through it). But in hydranencephaly, a condition in which the cerebral hemispheres are almost totally absent, the head appears normal, but when transilluminated, light shines completely through. This is just one example of the use of transillumination, a simple, inexpensive, painless procedure.
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Method of examination by the passage of light through tissues or a body cavity. [trans- + L. illumino, pp. -atus, to light up]

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trans·il·lu·mi·na·tion -ə-.lü-mə-'nā-shən n the act, process, or an instance of transilluminating

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n.
the technique of shining a bright light through part of the body to examine its structure. Transillumination of the sinuses of the skull is a means of detecting abnormalities.

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trans·il·lu·mi·na·tion (trans″ĭ-loo″mĭ-naґshən) the passage of light through body tissues for the purpose of examination, the object or part under examination being interposed between the observer and the light source; called also diaphanoscopy.

Medical dictionary. 2011.

Look at other dictionaries:

  • Transillumination — is the technique of sample illumination by transmission of light through the sample. Transillumination is used in a variety of methods of imaging. Contents 1 Microscopy 2 Medicine 2.1 Hydrocephalus (water head) …   Wikipedia

  • transillumination — ● transillumination nom féminin Procédé d examen d une tuméfaction consistant à appliquer une petite source lumineuse sur l un des côtés de celle ci et à observer si la lumière est visible ou non par transparence de l autre côté …   Encyclopédie Universelle

  • transillumination — n. the technique of shining a bright light through part of the body to examine its structure. Transillumination of the sinuses of the skull is a means of detecting abnormalities …   The new mediacal dictionary

  • transillumination — noun see transilluminate …   New Collegiate Dictionary

  • transillumination — trans·il·lu·mi·na·tion (trăns ĭ lo͞o mə nāʹshən, trănz ) n. The passing of a light through the walls of a body part or organ to facilitate medical inspection.   trans il·luʹmi·nate ( lo͞oʹmə nāt ) v. trans il·luʹmi·na tor n. * * * …   Universalium

  • transillumination — noun The examination of a body part, or a tissue sample, by shining light through it …   Wiktionary

  • Transillumination — Trans|il|luminatio̱n [zu ↑trans... u. lat. illuminare = beleuchten] w; , en: Durchleuchtung des Organismus od. eines Körperteils mit einer starken Lichtquelle zur Feststellung krankhafter Veränderungen …   Das Wörterbuch medizinischer Fachausdrücke

  • transillumination — n. process of making transparent; (Medicine) diaphanoscopy, examination of an organ or body cavity using a light through the tissues (for medical inspection) …   English contemporary dictionary

  • transillumination — trans·illumination …   English syllables

  • transillumination — “+ noun : an act, process, or instance of transilluminating * * * transillumināˈtion noun • • • Main Entry: ↑transilluminate …   Useful english dictionary

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