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288   Computational Modeling in Biomedical Engineering and Medical Physics
























                Figure 8.30 The medical image reconstruction part of the computational domain—the breast and
                the tumoral formation.























                Figure 8.31 Temperature profile along a line coaxial with the cylindrical enclosure, passing through
                the breast.




                   The highest computed value is B41.36 C, and it is found in the tissue, behind the
                tumor. This thermal exposure is less than required for ablation, but a longer exposure
                may push this limit beyond the critical value.
                   The results here suggest that the procedure has to be adjusted—duration, fre-
                quency, transducer-to-breast distance and shape, power, etc.—to provide for a satisfac-
                tory set of protocol parameters. Furthermore, material properties and local
                vascularization have to be carefully considered.
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