A thought about cannon ball shadows.
Kumar
P D
PD
Chandrasekharan
K G
KG
D001921:Brain / Q000000981:diagnostic imaging*; D001932:Brain Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary*; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging / Q000556:secondary*; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D011859:Radiography