Optical imaging method, and an apparatus for optical imaging
First Claim
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1. An imaging method, comprising:
- treating an object to be examined with an optically activatable contrast medium;
irradiating the object to be examined by an excitation source; and
detecting luminescent light excited by the irradiation by a detector, wherein an illumination unit including a plurality of LEDs is used as excitation source.
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Abstract
In an imaging method, an object to be examined is treated with an optically activatable contrast medium and illuminated via a plurality of LEDs. Luminescent light excited by the irradiation is detected by a detector. The LEDs have emission wavelengths preferably different from one another. There are preferably different spectral filter combinations present that respectively include as a structural unit, an excitation filter for selecting an excitation wavelength from the radiation output by the excitation source, and a luminescence filter for filtering out wavelengths above the expected emission maximum of the luminescent light.
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Citations
33 Claims
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1. An imaging method, comprising:
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treating an object to be examined with an optically activatable contrast medium;
irradiating the object to be examined by an excitation source; and
detecting luminescent light excited by the irradiation by a detector, wherein an illumination unit including a plurality of LEDs is used as excitation source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18, 19, 20, 21, 22, 23, 24, 25)
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10. An apparatus for optical imaging, comprising:
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an excitation source for irradiating an object to be examined, wherein the object is treated with an optically activatable contrast medium;
a detector for detecting luminescent light that has been excited by the excitation source, wherein the excitation source includes a plurality of LEDs. - View Dependent Claims (11, 12, 26, 27)
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13. An apparatus for optical imaging, comprising:
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an excitation source for irradiating an object to be examined, wherein the object is treated with an optically activatable contrast medium;
a detector for detecting luminescent light that has been excited by the excitation source; and
a filter arrangement including, as a structural unit, a spectral filter combination as follows, an excitation filter for selecting an excitation wavelength from radiation output by the excitation source, and a luminescence filter for filtering out wavelengths above the expected emission maximum of the luminescent light. - View Dependent Claims (14, 15, 28, 29)
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16. A set of a plurality of spectral filter combinations that are prepared for mutually different contrast media, each of the spectral filter combinations comprising:
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an excitation filter for selecting an excitation wavelength, suitable for the respective contrast medium, from irradiation output by an excitation source; and
a luminescence filter for filtering out wavelengths above the expected emission maximum of the luminescent light emitted by the contrast medium. - View Dependent Claims (17)
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30. An imaging apparatus, comprising:
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means for treating an object to be examined with an optically activatable contrast medium;
means for irradiating the object to be examined by an excitation source; and
means for detecting luminescent light excited by the irradiation by a detector, wherein an illumination unit including a plurality of LEDs is used as excitation source.
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31. An apparatus for optical imaging, comprising:
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excitation means for irradiating an object to be examined, wherein the object is treated with an optically activatable contrast medium;
detection means for detecting luminescent light that has been excited by the excitation means, wherein the excitation means includes a plurality of LEDs.
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32. An apparatus for optical imaging, comprising:
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excitation means for irradiating an object to be examined, wherein the object is treated with an optically activatable contrast medium;
detection means for detecting luminescent light that has been excited by the excitation means; and
a filter arrangement including, as a structural unit, a spectral filter combination as follows, excitation filtering means for selecting an excitation wavelength from radiation output by the excitation means, and luminescence filter means for filtering out wavelengths above the expected emission maximum of the luminescent light.
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33. A set of a plurality of spectral filter combinations that are prepared for mutually different contrast media, each of the spectral filter combinations comprising:
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excitation filter means for selecting an excitation wavelength, suitable for the respective contrast medium, from irradiation output by an excitation source; and
luminescence filter means for filtering out wavelengths above the expected emission maximum of the luminescent light emitted by the contrast medium.
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Specification