Fig. 1
From: Abdominal DIBH reduces the cardiac dose even further: a prospective analysis
The relative spatial position relationships of the breast CTV (orange), left lung (blue), heart (red), LMCA (green), and LADCA (yellow) in a typical patient during FB (a), T-DIBH (b) and A-DIBH (c). A vertebral body T7 (blue) is contoured as a position marker in the shown case. During T-DIBH, due to expansion of the left lung (B), the heart, LMCA, and LADCA are moved caudally compared with during FB (a). During A-DIBH (c), the heart, LMCA, and LADCA are moved farther caudally than during T-DIBH (b). During T-DIBH (b) and A-DIBH (c), the breast CTV is moved cranioventrally compared with during FB (a) due to the expansion of the left lung