Parameters utilized to construct the ductal network.

<p>Parameters utilized to construct the ductal network.</p

Conceptual illustration of the thickness projection calculations.

<p>A numerical phantom composed of two materials (<i>M</i>_<i>a</i> and <i>M</i>_<i>b</i>) is first separated into two voxel phantoms. Then, ray tracing to each phantom is performed. The thickness projection contains only the spatial thickness distribution along the X-ray source and detector geometry.</p

Anatomical distributions of breast components.

<p>All of the distributions were assumed to be Gaussian.</p

Lateral projection images simulated using breast phantoms of various densities: Glandular tissue comprises 7.6%, 11.8%, 12.4%, 16.5%, 16.8%, 22.1%, 22.4%, 22.8%, 23.5%, and 27.1% of the total volume (clockwise from the upper left corner).

<p>Lateral projection images simulated using breast phantoms of various densities: Glandular tissue comprises 7.6%, 11.8%, 12.4%, 16.5%, 16.8%, 22.1%, 22.4%, 22.8%, 23.5%, and 27.1% of the total volume (clockwise from the upper left corner).</p

Generation of glandular tissue distribution.

<p>Generation of glandular tissue distribution.</p

Parameter values used to define Cooper’s ligament.

<p>Parameter values used to define Cooper’s ligament.</p

Generation of polychromatic projection for dedicated breast computed tomography simulation using anthropomorphic numerical phantom - Fig 6

<p>Modeled breast phantom compartments: (a) external boundary, (b) ductal network, (c) Cooper’s ligament, and (d) glandular tissue distribution.</p

Generation of polychromatic projection for dedicated breast computed tomography simulation using anthropomorphic numerical phantom - Fig 8

<p>Sinograms acquired from the cylindrical phantom using the (a) proposed and (b) conventional polyenergetic sampling and (c) monoenergetic (35 keV) sampling. Profiles of the center of the sinogram: image reconstructions based on the (d) proposed and (e) conventional polyenergetic sampling and (f) the 35 keV monoenergetic sinogram.</p

Le Courrier

23 mai 18481848/05/23 (N143)