Todos Medical Ltd. | Date: 2012-05-10
A method is provided including obtaining an infrared (IR) spectrum of a blood plasma sample by analyzing the blood plasma sample by infrared spectroscopy, and based on the infrared spectrum, generating an output indicative of the presence of a solid tumor or a pre-malignant condition. Other applications are also described.
Todos Medical Ltd. | Date: 2011-06-01
A method is provided comprising, obtaining an infrared (IR) spectrum of a Peripheral Blood Mononuclear Cells (PBMC) sample by analyzing the sample by infrared spectroscopy; and based on the infrared spectrum, generating an output indicative of the presence of a solid tumor or a pre-malignant condition. Other embodiments are also provided.
Zelig U.,Todos Medical Ltd |
Barlev E.,Tel Aviv University |
Bar O.,Todos Medical Ltd |
Gross I.,Ben - Gurion University of the Negev |
And 7 more authors.
BMC Cancer | Year: 2015
Background: Most of the blood tests aiming for breast cancer screening rely on quantification of a single or few biomarkers. The aim of this study was to evaluate the feasibility of detecting breast cancer by analyzing the total biochemical composition of plasma as well as peripheral blood mononuclear cells (PBMCs) using infrared spectroscopy. Methods: Blood was collected from 29 patients with confirmed breast cancer and 30 controls with benign or no breast tumors, undergoing screening for breast cancer. PBMCs and plasma were isolated and dried on a zinc selenide slide and measured under a Fourier transform infrared (FTIR) microscope to obtain their infrared absorption spectra. Differences in the spectra of PBMCs and plasma between the groups were analyzed as well as the specific influence of the relevant pathological characteristics of the cancer patients. Results: Several bands in the FTIR spectra of both blood components significantly distinguished patients with and without cancer. Employing feature extraction with quadratic discriminant analysis, a sensitivity of ~90 % and a specificity of ~80 % for breast cancer detection was achieved. These results were confirmed by Monte Carlo cross-validation. Further analysis of the cancer group revealed an influence of several clinical parameters, such as the involvement of lymph nodes, on the infrared spectra, with each blood component affected by different parameters. Conclusion: The present preliminary study suggests that FTIR spectroscopy of PBMCs and plasma is a potentially feasible and efficient tool for the early detection of breast neoplasms. An important application of our study is the distinction between benign lesions (considered as part of the non-cancer group) and malignant tumors thus reducing false positive results at screening. Furthermore, the correlation of specific spectral changes with clinical parameters of cancer patients indicates for possible contribution to diagnosis and prognosis. © 2015 Zelig et al.; licensee BioMed Central.
Todos Medical Ltd | Date: 2016-02-17
Ostrovsky E.,Ben - Gurion University of the Negev |
Ostrovsky E.,Todos Medical Ltd |
Zelig U.,Ben - Gurion University of the Negev |
Zelig U.,Todos Medical Ltd |
And 6 more authors.
IEEE Transactions on Biomedical Engineering | Year: 2013
We have developed a novel approach for detection of cancer based on biochemical analysis of peripheral blood plasma using Fourier transform infrared spectroscopy. This approach has proven to be quick, safe, minimal invasive, and effective. Our approach recognizes any signs of solid tumor presence, regardless of location in the body or cancer type by measuring a spectrum that gives information regarding the total molecular composition and structure of the peripheral blood samples. The analysis includes clinically relevant preprocessing and feature extraction with principal component analysis, and uses Fisher's linear discriminant analysis to classify between cancer patients and healthy controls. We evaluated our method with leave-one-out cross validation and were able to establish sensitivity of 93.33%, specificity of 87.8%, and overall accuracy of 90.7%. Using our method for cancer detection should result in fewer unnecessary invasive procedures and yield fast detection of solid tumors. © 1964-2012 IEEE.