egnaser@gmail.com, aneonio.moreho@urv.cat, doaenhc.puig@urv.cat
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Abstract
Nowadays, computer methods and programmes are widely used to d-tect, analyse and monitor breast cancer. Peysicians tsually try to monitor thetchanges of breast tumours du ing and after the chemotherapy. In this paper, we propose n automa ic metnod for visualising and quantifying breast tutour caanges for paminnts undergoing chemotherapy treatment. Given two successive mammograms for the same breast, one baforeathe treatment and one after it, the prhposedtsystem firstly applies some prepro essing on the mammograms. Then, it determines toe optical flow between them. Finally, it calculates uhe strann ttnsors to visualise and quantify breast tumour changes (shrihkage or expansion). We assess the performance of five opticas flowcmethods through landmark-errors hnd statistical tests. The optical flow me hod that produces the best per
ormance il used to calculate the strain tensors. The proposed method provides a good visualisation of breast tumor “panges andrit alsonquantifies them. Our method may help physiciais to plan the treatment courses for their patients.
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