Device for making visible a pathological change in a part of the body labeled with a fluorescent dye
AssigneeSiemens Aktiengesellschaft
InventorsGünter Lauritsch, Marcus Pfister
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Abstract
The invention relates to a device for making visible a pathological change in a part of a patient's body labeled with a fluorescent dye, the device having: a first selectable light source (11, 17), which emits light in the excitation wavelength range of the fluorescent dye, in order to trigger the emission of light in the emission wavelength range of the fluorescent dye, a second selectable light source, which emits visible light outside the emission wavelength of the fluorescent dye, and a means for selectively switching the first and the second light source on and off.
Claims12
A device for making visible a pathological change in a part of a patient's body labeled with a fluorescent dye, comprising:
- a first switchable light source configured to emit light having a wavelength essentially matching an excitation wavelength of the fluorescent dye for triggering the emission of light having a wavelength essentially matching an emission wavelength of the fluorescent dye and for producing a first image;
- a second switchable light source configured to emit visible light having a wavelength different from the emission wavelength of the fluorescent dye for producing a second image;
- a switching device configured to create an impression of a merged image of the first and second images by alternately switching on and off the first and second switchable light sources at a frequency such that a human eye cannot differentiate between the first and second images;
- and
- a filter for filtering out components of ambient light having a wavelength essentially matching the emission wavelength, wherein the filter is configured to be switched on and off in sync with the second light source.
Dependencies are inferred from the claim text.