MODEL RELEASED. Doctor positioning a patient to undergo a gamma camera scan,a diagnostic technique that uses mildy radioactive tracers to detect sites of disease at an early stage. The radioisotope used (the majority of scans use technetium-99m) is linked to a tracer substance that becomes concentrated in the organ under investigation,following its injection into the blood circulation. Gamma rays pass through the body & are detected by the gamma camera (right) that provides a map (a scintigram) of activity in the organ,where healthy & abnormal tissues absorb the tracer at a different rate. Models: Dr Mike Keir & Gwennie | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / MEDICAL PHYSICS, RVI, NEWCASTLE UPON-TYNE / SIMON FRASER |
Taille de l’image : | 5011 px × 3807 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : | - |