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Figure 6 | Radiation Oncology

Figure 6

From: Radiotherapy treatment planning with contrast-enhanced computed tomography: feasibility of dual-energy virtual unenhanced imaging for improved dose calculations

Figure 6

Planar dose distributions and error maps (energy, 10 MV; field size, 10 × 10 cm2). Dose calculations were performed using (a) true unenhanced, (b) enhanced, (c) virtual unenhanced (80/Sn140-kVp), and (d) virtual unenhanced (100/Sn140-kVp) images. The three error (difference) maps correspond to the (e) enhanced, (f) virtual unenhanced (80/Sn140-kVp), and (g) virtual unenhanced (100/Sn140-kVp) images, with the true unenhanced images as the reference. Dose distributions obtained from the virtual unenhanced images are quite similar to dose distributions from the true unenhanced images. In particular, the virtual unenhanced (100/Sn140-kVp) images achieved almost entirely 0-cGy of errors, except at the beam edges.

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Radiation Oncology

ISSN: 1748-717X

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