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עמוד בית
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April 2011
D. Belkic and K. Belkic

There are major dilemmas regarding the optimal modalities for breast cancer screening. This is of particular relevance to Israel because of its high-risk population. It was suggested that an avenue for further research would be to incorporate advances in signal processing through the fast Padé transform (FPT) to magnetic resonance spectroscopy (MRS). We have now applied the FPT[1] to time signals that were generated according to in vitro MRS[2] data as encoded from extracted breast specimens from normal, non-infiltrated breast tissue, fibroadenoma and cancerous breast tissue. The FPT is shown to resolve and precisely quantify the physical resonances as encountered in normal versus benign versus malignant breast. The FPT unambiguously delineated and quantified diagnostically important metabolites such as lactate, as well as phosphocholine, which very closely overlaps with glycerophosphocholine and phosphoethanolamine, and may represent a magnetic resonance-visible molecular marker of breast cancer. These advantages of the FPT could clearly be of benefit for breast cancer diagnostics via MRS. This line of investigation should continue with encoded data from benign and malignant breast tissue, in vitro and in vivo. We anticipate that Padé-optimized MRS will reduce the false positive rates of MR-based modalities and further improve their sensitivity. Once this is achieved, and given that MR entails no exposure to ionizing radiation, new possibilities for screening and early detection emerge, especially for risk groups. For example, Padé-optimized MRS together with MR imaging could be used with greater surveillance frequency among younger women with high risk of breast cancer.






[1] FPT = fast Padé transform



[2] MRS = magnetic resonance spectroscopy


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