摘要:
A method for laser induced fluorescence of tissue in which laser radiation is used to illuminate and induce fluorescence in the tissue under study to determine the chemical composition or pathologic condition of tissue. The laser radiation and the retrieved fluorescing radiation can be conveyed through a catheter using an array of optical fiber. The fluorescence spectrum of the tissue can be displayed and analyzed to obtain information regarding the chemical composition and medical condition of the tissue inside the human body.
摘要:
A method for laser induced fluorescence of tissue in which laser radiation is used to illuminate and induce fluorescence in the tissue under study to determine the chemical composition or pathologic condition of tissue. The laser radiation and the retrieved fluorescing radiation can be conveyed through a catheter using an array of optical fiber. The fluorescence spectrum of the tissue can be displayed and analyzed to obtain information regarding the chemical composition and medical condition of the tissue inside the human body.
摘要:
The present invention relates to a method of generating and processing spectral information arising from the laser induced fluorescence of tissue. The intensity of fluorescence is recorded as a function of both excitation and emission wavelengths and contour maps of tissue fluorescence are generated which are useful in the diagnosis of condition of the tissue under examination.
摘要:
The present invention relates to a method of generating and processing spectral information arising from the laser induced fluorescence of tissue. The intensity of fluorescence is recorded as a function of both excitation and emission wavelengths and contour maps of tissue fluorescence are generated which are useful in the diagnosis of condition of the tissue under examination.
摘要:
Systems and methods for spectroscopic diagnosis and treatment are employed which utilize molecular spectroscopy to accurately diagnose the condition of tissue. Infrared Raman spectroscopy and infrared attenuated total reflectance measurements are performed utilizing a laser radiation source and a fourier transform spectrometer. Information acquired and analyzed in accordance with the invention provides accurate details of biochemical composition and pathologic condition.
摘要:
Systems and methods for spectroscopic diagnosis and treatment are employed which utilize molecular spectroscopy to accurately diagnose the condition of tissue. Infrared Raman spectrscopy and infrared attenuated total reflectance measurements are performed utilizing a laser radiation source and a fourier transform spectrometer. Information acquired and analyzed in accordance with the invention provides accurate details of biochemical composition and pathologic condition.
摘要:
The present application is directed to the use of photon migration analysis to provide a method of analyzing the diffuse reflectance, fluorescence, Raman or other types of spectra obtained from tissue. This procedure provides a means for processing spectral data such that the distortion in fluorescence spectra, for example, caused by the interplay of a variety of factors such as scattering, absorption, geometry and boundary conditions, can be precisely removed simply by measuring the diffuse reflectance spectrum as well as a second selected spectrum, such as fluorescence, and adjust the spectrum with the reflectance spectrum as described herein. By this procedure, the sample-to-sample variability is minimized. The intrinsic spectrum extracted by this procedure can be easily deconvoluted and provide quantitative information about the physicochemical composition of tissue. Analytical procedures for clinical diagnosis have been developed based on this method.
摘要:
The present invention relates to methods comprising whole genome sequencing for identifying polymorphisms in samples comprising mixtures of genomes, and for determining and/or monitoring the presence or absence of disorders associated with the identified polymorphisms.
摘要:
The invention provides a method for determining copy number variations (CNV) of a sequence of interest in a test sample that comprises a mixture of nucleic acids that are known or are suspected to differ in the amount of one or more sequence of interest. The method comprises a statistical approach that accounts for accrued variability stemming from process-related, interchromosomal and inter-sequencing variability. The method is applicable to determining CNV of any fetal aneuploidy, and CNVs known or suspected to be associated with a variety of medical conditions. CNV that can be determined according to the method include trisomies and monosomies of any one or more of chromosomes 1-22, X and Y, other chromosomal polysomies, and deletions and/or duplications of segments of any one or more of the chromosomes, which can be detected by sequencing only once the nucleic acids of a test sample.
摘要:
The invention provides methods for determining aneuploidy and/or fetal fraction in maternal samples comprising fetal and maternal cfDNA by massively parallel sequencing. The method comprises a novel protocol for preparing sequencing libraries that unexpectedly improves the quality of library DNA while expediting the process of analysis of samples for prenatal diagnoses.