# US 9,436,992 B2 · Method of reconstituting cellular spectra useful for detecting cellular disorders > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,436,992 B2 - Document ID: US9436992B2 - Status: Granted - Kind: B2 - Application number: 14/678,396 - Filed: 2015-04-03 - Published: 2015-07-30 - Granted: 2016-09-06 - Earliest claimed: 2008-05-29 - Assignees: Northeastern University - Applicants: Northeastern University - Inventors: Max Diem; Milos Miljkovic; Melissa Romeo; Benjamin Bird; Jennifer Schubert; Kostas Papamarkakis - Web page: https://patentgrep.com/patent/US9436992B2 ## CPC - G06T 7/0012: {Biomedical image inspection} - G06T 7/42: using transform domain methods - G06T 7/90: Determination of colour characteristics - G06V 10/431: {Frequency domain transformation; Autocorrelation} - G06V 20/698: {Matching; Classification} - G06T 2207/10056: Microscopic image - G06T 2207/20021: Dividing image into blocks, subimages or windows - G06T 2207/30004: Biomedical image processing - G06T 2207/30024: Cell structures in vitro; Tissue sections in vitro - G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING ## Abstract Embodiments of the present disclosure provides improved methods for determining the presence of abnormalities in exfoliated cells. In one embodiment, the present disclosure provides methods for reconstructing cellular spectrum of a cell sample by creating a spectral map of the cellular sample, generating a binary mask of the spectral map, removing edge artifacts from each cell, and co-adding spectral data of each pixel corresponding to the cell to reconstruct the spectrum of each cell. ## Claims ### Claim 1 A method of generating a spectrum of a cell, the method comprising: receiving a plurality of spectral pixels, each spectral pixel corresponding to a portion of a sample and being associated with a plurality of intensity measurements, each intensity measurement representing an intensity of light associated with a wavenumber, wherein one of the plurality of intensity measurements associated with each spectral pixel corresponds to one characteristic peak measurement; identifying a subset of the spectral pixels, each of the spectral pixels in the subset including a spectral intensity that is greater than or equal to a threshold value, wherein the spectral intensity that is greater than or equal to the threshold value is associated with a cell; and forming a reconstructed cellular spectrum, the reconstructed cellular spectrum having a plurality of reconstructed measurements, each of the reconstructed measurements corresponding to a selected wavenumber, each of the reconstructed measurements being formed according to a sum of the intensity measurements associated with the selected wavenumber of the spectral pixels in the subset. ### Claim 2 (depends on 1) The method of claim 1, wherein a member of the subset is a first spectral pixel that satisfies a first criterion, the first criterion being that the first spectral pixel corresponds to the cell. ### Claim 3 (depends on 2) The method of claim 2, wherein the first spectral pixel satisfies a second criterion, the second criterion being that a characteristic peak intensity of the first spectral pixel is greater than a first threshold. ### Claim 4 (depends on 3) The method of claim 3, wherein the first threshold is a predefined percentage of the characteristic peak measurement in comparison to a pixel in the subset with a maximum spectral intensity. ### Claim 5 (depends on 3) The method of claim 3, wherein when the first spectral pixel does not satisfy the second criterion, removing the first spectral pixel from the subset. ### Claim 6 (depends on 3) The method of claim 3, wherein the first spectral pixel satisfies a third criterion, the third criterion being that the difference between the wavenumber associated with the characteristic peak measurement of the first spectral pixel and the wavenumber associated with the pixel with the maximum spectral intensity measurement is less than a second threshold. ### Claim 7 (depends on 6) The method of claim 6, wherein when the first spectral pixel does not satisfy the third criterion, removing the first spectral pixel from the subset. ### Claim 8 (depends on 1) The method of claim 1, further comprising: determining whether the reconstructed cellular spectrum has a predetermined criterion, the predetermined criterion being indicative of a physiological state of the cell. ### Claim 9 (depends on 1) The method of claim 1, further comprising: determining whether the reconstructed cellular spectrum has a predetermined criterion, the predetermined criterion being indicative of presence of a disorder in the cell. ### Claim 10 A system for generating a spectrum of a cell, the system comprising: a component for receiving a plurality of spectral pixels, each spectral pixel corresponding to a portion of the sample and being associated with a plurality of intensity measurements, each intensity measurement representing an intensity of light associated with a wavenumber, wherein one of the intensity measurements associated with each spectral pixel corresponds to one characteristic peak measurement; a component for identifying a subset of the spectral pixels, each of the spectral pixels in the subset including a spectral intensity that is greater than or equal to a threshold value, wherein the spectral intensity that is greater than or equal to the threshold value is associated with a cell; and a component for forming a reconstructed cellular spectrum, the reconstructed cellular spectrum having a plurality of reconstructed measurements, each of the reconstructed measurements corresponding to a selected wavenumber, each of the reconstructed measurements being formed according to a sum of the intensity measurements associated with the selected wavenumber of the pixels in the subset. ### Claim 11 (depends on 10) The system of claim 10, wherein a member of the subset is a first spectral pixel that satisfies a first criterion, the first criterion being that the first spectral pixel corresponds to the cell. ### Claim 12 (depends on 10) The system of claim 10, wherein the first spectral pixel satisfies a second criterion, the second criterion being that a characteristic peak intensity of the first spectral pixel is greater than a first threshold. ### Claim 13 (depends on 12) The system of claim 12, wherein the first threshold is a predefined percentage of the characteristic peak measurement in comparison to a pixel in the subset with a maximum spectral intensity. ### Claim 14 (depends on 12) The system of claim 12, wherein when the first spectral pixel does not satisfy the second criterion, removing the first spectral pixel from the subset. ### Claim 15 (depends on 12) The system of claim 12, wherein the first spectral pixel satisfies a third criterion, the third criterion being that the difference between the wavenumber associated with the characteristic peak measurement of the first spectral pixel and the wavenumber associated with the pixel with the maximum spectral intensity measurement is less than a second threshold. ### Claim 16 (depends on 15) The system of claim 15, wherein when the first spectral pixel does not satisfy the third criterion, removing the first spectral pixel from the subset. ### Claim 17 (depends on 10) The system of claim 10, further comprising: determining whether the reconstructed cellular spectrum has a predetermined criterion, the predetermined criterion being indicative of a physiological state of the cell. ### Claim 18 (depends on 10) The system of claim 10, further comprising: determining whether the reconstructed cellular spectrum has a predetermined criterion, the predetermined criterion being indicative of a presence of a disorder in the cell. ### Claim 19 A method of generating a spectrum of a cell, the method comprising: receiving a plurality of spectral pixels, each spectral pixel corresponding to a portion of the sample and being associated with a plurality of intensity measurements, each intensity measurement representing an intensity of light associated with a wavenumber, wherein one of the intensity measurements associated with each spectral pixel corresponds to one characteristic peak measurement; identifying a subset of the spectral pixels, a number of the spectral pixels in the subset is within a threshold range, wherein the threshold range is associated with a size of a cell of interest; and forming a reconstructed cellular spectrum, the reconstructed cellular spectrum having a plurality of reconstructed measurements, each of the reconstructed measurements corresponding to a selected wavenumber, each of the reconstructed measurements being formed according to a sum of the intensity measurements associated with the selected wavenumber of the pixels in the subset.