Laser imaging apparatus using biomedical markers that bind to cancer cells
First Claim
1. A method for collecting data for use in image reconstruction of a tissue being scanned containing cancer cells, comprising the steps of:
- a) providing a source of laser beam;
b) providing a biochemical marker that selectively binds to cancer cells within the tissue;
c) directing the laser beam toward the object being scanned;
d) orbiting the laser beam around the object;
e) providing a plurality of sensors adapted to simultaneously detect radiation exiting from the object; and
f) limiting the sensors to detect only the radiation released by the biochemical marker after having been activated by the laser beam.
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Accused Products
Abstract
A method for collecting data for use in image reconstruction of a tissue being scanned containing cancer cells comprises the steps of providing a source of laser beam; providing a biochemical marker that selectively binds to cancer cells within the tissue; directing the laser beam toward the object being scanned; orbiting the laser beam around the object; providing a plurality of sensors adapted to simultaneously detect the laser beam after passing through the object; and limiting the sensors to detect only the radiation released by the biochemical marker after having been activated by the laser beam.
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Citations
12 Claims
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1. A method for collecting data for use in image reconstruction of a tissue being scanned containing cancer cells, comprising the steps of:
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a) providing a source of laser beam; b) providing a biochemical marker that selectively binds to cancer cells within the tissue; c) directing the laser beam toward the object being scanned; d) orbiting the laser beam around the object; e) providing a plurality of sensors adapted to simultaneously detect radiation exiting from the object; and f) limiting the sensors to detect only the radiation released by the biochemical marker after having been activated by the laser beam. - View Dependent Claims (2, 3, 4)
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5. A method for activating a photodynamic therapy (PDT) drug attached to abnormal cells within a tissue, comprising the steps of:
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a) providing a biochemical marker carrying a PDT drug within the tissue; b) scanning the tissue to locate the position of the abnormal cells; c) determining the shortest path length for a laser beam having a wavelength appropriate for the PDT drug; and d) directing the laser beam toward the abnormal cells to activate the PDT drug. - View Dependent Claims (6)
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7. A detector array for a laser imaging apparatus, comprising:
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a) a plurality of detectors disposed in an arc around an opening in which a tissue to be scanned is disposed; and b) each of said detectors including an optical wavelength restricting filter matched to the wavelength of radiation emitted by a biochemical marker within the tissue after being activated by a laser beam. - View Dependent Claims (8, 9)
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10. An apparatus for imaging an object, comprising:
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a) a scanning chamber for receiving therein an object being scanned; b) a source of laser beam disposed within said scanning chamber for impinging on the object being scanned, said laser beam being adapted to orbit around the object; c) an array of sensors disposed within said chamber, each of said sensors being adapted to detect radiation emanating from a biochemical marker attached to cancer cells; and d) a computer programmed to take the output value of each detector at every location in the orbit around the object to reconstruct an image of the object. - View Dependent Claims (11, 12)
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Specification