The radiation tolerance of whole liver is:
Maximal tolerance dose (TD50/5) of liver is 40 Gy. Ref: X. Allen Li (2011), Chapter 20, "Adaptive Radiation Therapy for Liver Cancer", In the Book, "Adaptive Radiation Therapy", USA, Page 317 ; Clinical Radiation Oncology By Gunderson and Tepper, Page 715
15 Gy
30 Gy
40 Gy
45 Gy