Radioimmunotherapy: A Specific Treatment Protocol for Cancer by Cytotoxic Radioisotopes Conjugated to Antibodies

Table 1

Radioisotopes used in RIT.

Radioisotope	Energ (MeV)	Range	Half-life
-Particle emitter
^67Cu	0.58	2.1 mm	2.6 d
^90Y	2.28	12.0 mm	2.7 d
^131I	0.61	2.0 mm	8.0 d
^177Lu	0.50	1.5 mm	6.7 d
^186Re	1.07	4.5 mm	3.7 d
^188Re	2.12	10.4 mm	16.9 hr
-Particle emitter
^211At	6.8	80 m	7.2 hr
^213Bi	8.3	84 m	46 min
^225Ac	6.0~8.0	60~90 m	10.0 d
Auger-electron emitter
^125I		2~500 nm	60.5 d