Deposited energy for chest wall irradiation with different compositions.

<p>Deposited energy for chest wall irradiation with different compositions.</p

HF values for irradiation at 0° for the three types of heterogeneity studied.

<p>HF values for irradiation at 0° for the three types of heterogeneity studied.</p

Breast simulator with the representative structures.

<p>1-chest wall, 2-breast tissue and skin, 3-tissue expander and 4-lung.</p

Breast phantom composed by five layers with the magnetic disk fixed at the first layer.

<p>Breast phantom composed by five layers with the magnetic disk fixed at the first layer.</p

Deposited energy curves calculated with MCNP for the three heterogeneity types studied on the structures representing chest wall and breast tissue and skin (A) 0°, (B) 90° and (C) for 270° irradiation, respectively.

<p>Deposited energy curves calculated with MCNP for the three heterogeneity types studied on the structures representing chest wall and breast tissue and skin (A) 0°, (B) 90° and (C) for 270° irradiation, respectively.</p

Treatment Planning isodose Curves for the two extremes volumes considered with and without heterogeneity correction algorithm applied.

<p>The curve of 5000cGy is the prescribed curve. (A) Planning Isodose curves for the first volume without heterogeneity correction and (B) with correction; (C) Planning Isodose curves for the last volume without heterogeneity correction and (D) with correction.</p

Illustration of the computational simulation of the magnetic valves.

<p>They were performed with the intersection between cylinders and planes with MCNPX code. A) Cylinder 1, planes 2 and 3 generate the magnetic disk; B) Cylinder 4, planes 5 and 6 generate the metal capsule; C) Cylinders 7, 8 and planes 6, 9 generate the external cup-shape structure that contains the magnetic disk in the expanders type I and II.</p

Dose x Depth Monte Carlo Simulations, comparing the two densities; black squares for 7.4g/cm³ and red circles for 5.0g/cm³.

<p>Dose x Depth Monte Carlo Simulations, comparing the two densities; black squares for 7.4g/cm³ and red circles for 5.0g/cm³.</p

Results for density and dimensional stability tests for some breast phantoms.

<p>Results for density and dimensional stability tests for some breast phantoms.</p

Isodose crossplane calculated with (a) TPS and (b) measured with radiochromic film.

<p>Isodose crossplane calculated with (a) TPS and (b) measured with radiochromic film.</p