Technical Aspects
Steps must be taken to avoid artifacts or luminous pollution during the venous translumination. Reflection and refraction of light are important to avoid distorted images which can appear during a scanning. Many are due to inappropriate sources which would provoke light loss similar to luminous pollution.
During the venous translumination, the amount of reflected light depends on the index of refraction which can be altered by the venous thrombosis. Certain types of lamps process more dispersion than reflection, and therefore favor the formation of artifacts.
Another aspect is the inability to be obtain useful images with a fiber-optic source due to the high irradiation frequency. It is also known that the reflection in an optic fiber source is initially processed internally. Certain instruments are not specific to obtain reflected images. The illumination of the skin by distant infrared light, without the impression of the source on the skin, does not reveal a diagnostic image. The translumination transductor must be in direct contact with the skin. The process should be similar to that used in Doppler ultrasonography.
Read more about this topic: Venous Translucence
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