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Microwave scattering data were collected at 0.8 to 1.2\u2009GHz with 24 transmitting and receiving antennas located in a matching fluid of deionized water and table salt. Inversion of the microwave data was performed with a balanced version of the multiplicative-regularized contrast source inversion algorithm formulated using the finite-element method (FEM-CSI). T1-weighted MRI images of each volunteer\u2019s forearm were also collected in the same plane as the microwave scattering experiment. Initial \u201cblind\u201d imaging results from the utilized inversion algorithm show that the image quality is dependent on the thickness of the arm\u2019s peripheral adipose tissue layer; thicker layers of adipose tissue lead to poorer overall image quality. Due to the exible nature of the FEM-CSI algorithm used, prior information can be readily incorporated into the microwave imaging inversion process. We show that by introducing prior information into the FEM-CSI algorithm the internal anatomical features of all the arms are resolved, significantly improving the images. The prior information was estimated manually from the blind inversions using an<jats:italic>ad hoc<\/jats:italic>procedure.<\/jats:p>","DOI":"10.1155\/2013\/673027","type":"journal-article","created":{"date-parts":[[2013,8,19]],"date-time":"2013-08-19T17:01:33Z","timestamp":1376931693000},"page":"1-17","source":"Crossref","is-referenced-by-count":60,"title":["Microwave Imaging of Human Forearms: Pilot Study and Image Enhancement"],"prefix":"10.1155","volume":"2013","author":[{"given":"Colin","family":"Gilmore","sequence":"first","affiliation":[{"name":"TRTech Inc., Winnipeg MB, Canada R3T 6A8"}]},{"given":"Amer","family":"Zakaria","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg MB, Canada R3T 5V6"}]},{"given":"Stephen","family":"Pistorius","sequence":"additional","affiliation":[{"name":"Department of Physics and Astronomy, University of Manitoba, Winnipeg MB, Canada R3T 2N2"},{"name":"Medical Physics, 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