?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F566%2F&rft.title=Microwave+Medical+Imaging%3A+Potentialities+and+Limitations+of+a+Stochastic+Optimization+Technique&rft.creator=Caorsi%2C+Salvatore&rft.creator=Massa%2C+Andrea&rft.creator=Pastorino%2C+Matteo&rft.creator=Rosani%2C+Andrea&rft.subject=TU+Technical+Reports+and+Publications&rft.description=An+approach+based+on+a+stochastic+optimization+technique+is+proposed+for+medical+microwave+imaging.+The+approach+is+based+on+the+integral+equations+of+the+electromagnetic+inverse+scattering.+After+discretization+of+the+continuous+model%2C+the+problem+solution+is+recast+as+a+global+optimization+problem.+A+functional+is+costructed+on+the+basis+of+a+Markov+random+field+model+and+minimized+by+a+genetic+algorithm.+In+order+to+reduce+the+computational+load%2C+a+model+of+the+cross+section+of+the+biological+body+is+considered.+In+this+way%2C+the+investigation+area+is+limited+by+separating+the+scattering+contribution+of+a+fixed+region+under+test+from+those+of+other+parts+of+the+model.+Some+preliminary+results+concerning+a+two-dimensional+model+of+a+human+thorax+are+reported.+Such+a+biological+structure+is+inspected+by+the+proposed+tomographic+approach+in+order+to+detect+and+localize+the+presence+of+and+%22object%22+modeling+a+tumor.&rft.date=2004-08&rft.type=Technical+Report&rft.type=NonPeerReviewed&rft.format=text&rft.language=en&rft.identifier=http%3A%2F%2Fwww.eledia.org%2Fstudents-reports%2F566%2F1%2FDIT-04-079.pdf&rft.identifier=++Caorsi%2C+Salvatore+and+Massa%2C+Andrea+and+Pastorino%2C+Matteo+and+Rosani%2C+Andrea++(2004)+Microwave+Medical+Imaging%3A+Potentialities+and+Limitations+of+a+Stochastic+Optimization+Technique.++%5BTechnical+Report%5D++++(Submitted)++