RT Book, Section SR Electronic(1) A1 Trevail, Tim YR 2018 T1 Lung patterns T2 BSAVA Congress Proceedings 2018 PB British Small Animal Veterinary Association DO 10.22233/9781910443590.18.7 UL https://www.bsavalibrary.com/content/chapter/10.22233/9781910443590.ch18sec7