摘要:
A method for operating a confocal microscope system includes deflecting a light beam on a specimen with at least one beam deflection device. The position of the light beam is stepped with at least one beam deflection device across the specimen. A sample of emitted fluorescent light from the specimen is captured in synchronization with each of the stepped positions of the light beam. An image is obtained from the captured samples of emitted fluorescent light.
摘要:
A method for operating a confocal microscope system includes deflecting a light beam on a specimen with at least one beam deflection device. The position of the light beam is stepped with at least one beam deflection device across the specimen. A sample of emitted fluorescent light from the specimen is captured in synchronization with each of the stepped positions of the light beam. An image is obtained from the captured samples of emitted fluorescent light.
摘要:
A method for operating a confocal microscope system includes deflecting a light beam on a specimen with at least one beam deflection device. The position of the light beam is stepped with at least one beam deflection device across the specimen. A sample of emitted fluorescent light from the specimen is captured in synchronization with each of the stepped positions of the light beam. An image is obtained from the captured samples of emitted fluorescent light.
摘要:
The present invention utilizes a plurality of spectroscopic systems and methods to measure characteristics of tissue useful in the diagnosis of disease. In a preferred embodiment, a combination of fluorescence, reflectance and light scattered spectra can be measured and processed to provide biochemical, architectural and morphological state of tissue. The methods and systems can be used particularly in the early detection of carcinoma within tissue in vivo and in vitro.
摘要:
A method of manufacturing a biopolymer optical waveguide includes providing a biopolymer, unwinding the biopolymer progressively to extract individual biopolymer fibers, and putting the unwound fibers under tension. The tensioned fibers are then cast in a different polymer to form a biopolymer optical waveguide that guides light due to the difference in indices of refraction between the biopolymer and the different polymer. The optical fibers may be used in biomedical applications and can be inserted in the body as transmissive media. Printing techniques may be used to manufacture the biopolymer optical waveguides.
摘要:
The present invention utilizes a plurality of spectroscopic systems and methods to measure characteristics of tissue useful in the diagnosis of disease. In a preferred embodiment, a combination of fluorescence, reflectance and light scattered spectra can be measured and processed to provide biochemical, architectural and morphological state of tissue. The methods and systems can be used particularly in the early detection of carcinoma within tissue in vivo and in vitro.
摘要:
The present invention provides methods and systems for performing in-vivo flow cytometry to obtain desired information regarding one or more cell types of interest flowing through a subject's circulatory system. In one embodiment of the invention, a portion of the subject's circulating blood is illuminated with radiation having multiple wavelength components, and the backscattered radiation generated in response to the excitation radiation is detected at a plurality of scattering angles and analyzed to derive the desired information.
摘要:
The present invention generally provides methods for assessing the potential of tumor formation and/or metastasis using a combination (e.g., a ratio) of the number of circulating tumor cells and the number of circulating cells exhibiting autofluorescence within a selected wavelength region (e.g., red autofluorescence). In one aspect, it is directed to a method for providing likelihood of occurrence of a primary and/or a metastatic cancerous tumor in an animal, which comprises inoculating the animal with a plurality of cancer cells, determining a ratio of a number of cancer cells relative to a number of circulating indicator cells (e.g., immature leukocytes) that exhibit autofluorescence in the inoculated animal's blood and correlating the ratio to a likelihood that the animal will develop at least one primary and/or metastatic cancerous tumor, e.g., by way of assigning a probability for tumor development and/or metastasis based on the measured ratio. The method can also be utilized in human studies using, e.g., contrast agents to identify the circulating tumor cells.
摘要:
A method of manufacturing a biopolymer optofluidic device including providing a biopolymer, processing the biopolymer to yield a biopolymer matrix solution, providing a substrate, casting the biopolymer matrix solution on the substrate, embedding a channel mold in the biopolymer matrix solution, drying the biopolymer matrix solution to solidify biopolymer optofluidic device, and extracting the embedded channel mold to provide a fluidic channel in the solidified biopolymer optofluidic device. In accordance with another aspect, an optofluidic device is provided that is made of a biopolymer and that has a channel therein for conveying fluid.
摘要:
A method of manufacturing a microfluidic device having at least one cylindrical microchannel includes providing a substrate, casting an uncured polymer matrix solution onto the substrate, embedding an elongated rod in the uncured polymer matrix solution, curing the polymer matrix solution to form a solidified body, and extracting the elongated rod to form the cylindrical microchannel in the solidified body. In another embodiment, the method includes forming an optical feature on a surface of the microfluidic device. A microfluidic device is also provided, the device including a polymer body, and at least one cylindrical microchannel in the polymer body, the cylindrical microchannel having a diameter between approximately 40 ?m and 250 ?m, inclusive. An additional microfluidic device is provided that functions as an optofluidic spectrometer. The optofluidic spectrometer includes a polymer body, a diffraction grating integrated within the polymer body, and a cylindrical microchannel behind the diffraction grating on the polymer body.