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(a) Name 4 major components of a Gamma camera. Briefly explain the function of each component. Also,...

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Physics

(a) Name 4 major components of a Gamma camera. Briefly explainthe function of each component.
Also, describe the advantages and disadvantages of using “thin”scintillating crystal.

(b) In an experiment with 51.80 MBq 99mTc, 5.88×105 counts aremeasured in 2 minutes. According to the manufacturer thesensitivity is 202 cnts/(min⋅μCi) (American manufacturers still useCi instead of Bq, 1μCi = 37 kBq). What is the difference betweenthe sensitivity of the measurement and the factoryspecification?


(c) in a NM scan, we use a specific contrast agent with half-lifeof 2h and emitted gamma radiation with wavelength of the 8.79x0-12m. We image the patient immediately after the injection and thescan takes 20 minutes. Injecting 1 mCi, the acquired NM images havesignal-to-noise ratio of 40. Calculate the SNR if we inject thepatient with 3 mCi and scan him for 60 minutes.

Answer & Explanation Solved by verified expert
3.5 Ratings (376 Votes)
a The major components and there functions in a gamma camera are 1 Photomultiplier Tubes These are responsible for amplifying the number of photons This makes sure that the number of photons falling    See Answer
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