Fig. 1
From: Variation of heart and lung radiation doses according to setup uncertainty in left breast cancer
Beam’s eye view of medial tangential field. After the organ at risks and target volume were drawn (Heart; brown, Left ventricle; yellow, left anterior descending coronary artery; blue, Lung; green, breast target volume; Orange) and original tangential fields were aligned, translation movement of deep (yellow arrow) and caudal (white arrow) directions was simulated in every 2.5 mm and 5 mm interval till 15 mm set-up error, respectively