Relationship between electron density and effective densities of body tissues for stopping, scattering, and nuclear interactions of proton and ion beams
Nobuyuki Kanematsu, Taku Inaniwa, and Yusuke Koba
Purpose: In treatment planning of charged-particle radiotherapy, patient heterogeneity is conventionally modeled as variable-density water converted from CT images to best reproduce the stopping power, which may lead to inaccuracies in the handling of multiple scattering and nuclear interactions. ...
Spectral analysis of mammographic images using a multitaper method
Gang Wu, James G. Mainprize, and Martin J. Yaffe
Purpose: Power spectral analysis in radiographic images is conventionally performed using a windowed overlapping averaging periodogram. This study describes an alternative approach using a multitaper technique and compares its performance with that of the standard method. This tool will be valuable in ...
A novel technique to enable experimental validation of deformable dose accumulation
Carolyn J. Niu, Warren D. Foltz, Michael Velec et al.
Purpose: To propose a novel technique to experimentally validate deformable dose algorithms by measuring 3D dose distributions under the condition of deformation using deformable gel dosimeters produced by a novel gel fabrication method.
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The Editorial Board of Medical Physics and the American Association of Physicists in Medicine (AAPM) Journal Business Management Committee are committed to the dissemination of scientific information important to all medical physicists, not just those who subscribe to the journal. Toward this objective, many of the articles published in Medical Physics are available at no cost and can be accessed without a password. They are available at http://online.medphys.org by clicking on the Open Access tab. Under that tab, you will find the following collections.
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