Method of reconstituting cellular spectra useful for detecting cellular disorders
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.
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 intensity measurements associated with each spectral pixel corresponds to one characteristic peak measurement;
identifying a subset of the spectral pixels, at least one member of the subset being a pixel with a maximum spectral intensity, wherein the pixel with the maximum spectral intensity is a spectral pixel corresponding to a cell and having an associated characteristic peak measurement that is greater than or equal to a characteristic peak measurement associated with other spectral pixels corresponding to the 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 pixels in the subset.
2. The method of claim 1 , wherein another 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.
3. The method of claim 2 , wherein the first spectral pixel satisfies a second criterion, the second criterion being that the characteristic peak intensity of the first spectral pixel is greater than a first threshold.
4. The method of claim 3 , wherein the first threshold is a predefined percentage of the characteristic peak measurement in comparison to the pixel with the maximum spectral intensity.
5. 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.
6. 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 first spectral pixel's characteristic peak measurement and the wavenumber associated with the pixel with the characteristic peak's maximum spectral intensity measurement is less than a second threshold.
7. 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.
8. 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.
9. 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.
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, at least one member of the subset being a pixel with a maximum spectral intensity, wherein the pixel with the maximum spectral intensity is a spectral pixel corresponding to a cell and having an associated characteristic peak measurement that is greater than or equal to a characteristic peak measurement associated with other spectral pixels corresponding to the 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.
11. The system of claim 10 , wherein another 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.
12. The system of claim 10 , wherein the first spectral pixel satisfies a second criterion, the second criterion being that the characteristic peak intensity of the first spectral pixel is greater than a first threshold.
13. The system of claim 12 , wherein the first threshold is a predefined percentage of the characteristic peak measurement in comparison to the pixel with the maximum spectral intensity.
14. 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.
15. 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 first spectral pixel's characteristic peak measurement and the wavenumber associated with the pixel with the characteristic peak's maximum spectral intensity measurement is less than a second threshold.
16. 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.
17. 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.
18. 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.