PET scans require extremely fast computers coupled with gamma- ray detectors capable of accurate energy measurements. Explain why both energy accuracy and comparison of arrival times are crucial to the success of a PET scan.
Answer to relevant QuestionsA Geiger counter is not efficient. That is, the number of events it records is always smaller than the amount of ionizing radiation that enters it. Explain why the efficiency is not 100%. Write the nuclear equations for (a) The alpha decay of 237Np, (b) The decay of 32P, (c) The decay of 56Co, (d) Electron capture in 56Co, and (e) The decay of 42K from an excited nuclear state to the ground state (not ...A particular radioactive sample undergoes 2.50 x 106 decays/s. What is the activity of the sample in (a) Curies and (b) Becquerel’s? Prove that the number N of radioactive nuclei remaining in a sample after an integer number (n) of half-lives has elapsed is N –No/2n = (1/2)n No. Here No stands for the initial number of nuclei. Nitrogen-13, with a half-life of 10.0 min, decays by beta emission. (a) Write down the decay equation to determine the daughter product and whether the beta particle is a positron or electron. (b) If a sample of pure 13N ...
Post your question