From: Radiation doses from 161Tb and 177Lu in single tumour cells and micrometastases
Cell surface
Intracytoplasmic
Whole cell
Intranuclear
177Lu
1.9
3.0
5.8
10.7
161Tb
5.0
8.3
19.5
38.6
Enhancement factor 161Tb/177Lu
2.6
2.8
3.4
3.6