injected/swallowed and there is enough time for it to flow through the body and be detected before it decays away but is only present for a short enough time to minimise any harm from radiation
Half life of technetium?
6 years
What does technetium decay into?
a safe isotope that can be excreted by the body
What type of emitter is technetium?
Gamma emitter, so can pass through the body tissue without being absorbed
Chemotherapy
gamma emitters are used to emit gamma rays, which are directed onto certain areas of the body with cancerous cells, which absorb energy and die, controlling the disease
use to control any other unwanted tissues to
hard to direct, surrounding healthy cells may also be irradiated, and their destruction causes unhealthy side effects
