1. Nat. Rev. Clin. Oncol. doi:10.1038/nrclinonc.2015.171
Figure 6 Strategies to reduce incidental cardiac exposure to radiation in patients with left-sided breast cancer
Figure 6 | Strategies to reduce incidental cardiac exposure to radiation in patients with left-sided breast cancer. a | Coronal CT image at free breathing. The thick white line highlighted by the arrow is the heart contour during a deep inspiratory breath-hold, with the heart being displaced inferiorly, medially and somewhat posteriorly, away from the left breast. b | Axial CT image showing positioning of the tangential radiation therapy beam with the patient in the prone position. The breast tissue falls anteriorly, thus allowing the posterior border of the tangential beam to exclude a portion of the heart. c | DRR of the Beam's eye view of a tangent field with a conformal hart block, and d | photograph of the skin of a patient showing conformal shaping of the radiation field and inclusion of a 'heart block'. These strategies are often used concurrently to avoid exposing the heart to radiation. DRR, digitally reconstructed radiograph.
Zagar, T. M. et al. (2015) Breast cancer therapy-associated cardiovascular disease
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