the gamma camera

Question 1

what is a tracer

Answer 1

a radioactive substance that is ingested by a patient which emits gamma photons to be detected by a gamma camera

Question 2

what is a gamma camera

Answer 2

detects gamma photons emitted by the patient and is used to create a real-time image of the path of the trace through the body

Question 3

what is a collimator

Answer 3

a device for producing a parallel sided beam of EM radiation

Question 4

what is a scintillator

Answer 4

A material that produces many photons of visible light when struck by a high energy photon

Question 5

what is a photomultiplier tube

Answer 5

a device used to give a pulse of electrons for each incident photon

Question 6

what is the purpose of the lead

Answer 6

a block of lead with tens of thousands of of vertical holes is close to the patient and the tubes are used to collimate the beam so that only photons passing can go through the detector

photons moving in other directions will be absorbed by the lead