what is the role of mass number in the interpretation of PET and SPECT scans?

... equal to the atomic number (Z). The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the ... It sounds so close to molar (or atomic) mass, but the idea is very different. Mass number is always an integer. Mass Number = Protons + Neutrons. Atom, Protons ... The atomic number is equal to the number of protons in the atom, therefore silicon ... What would happen to the atomic number and mass number? It would be an ... The correct answer is (D) The nucleus contains both protons and neutrons, the sum of which determines the mass number. atomic number=14Si28 = mass number. The mass number is 28, which tells us that silicon has a total number of protons and neutrons that equals 28. As we ... The new angular transmission labeled “projection” method is equal to ... mass number are shown in Fig.25. The parameters of the Abrasion-Ablation ... Proton Numbers Less Than or Equal to 82. Nuclei are composed of nucleons ... mass number has some odd-even fluctuation. Here are the incremental binding ... ... number of protons equals the number of electrons. Because these particles have the same but opposite charges, equal numbers cancel out, producing a neutral atom ... Mar 20, 2025 ... The mass number is defined as the total number of protons and neutrons in an atom. It can be calculated by adding the number of neutrons and the number of ... Nov 28, 2023 ... The number of protons is unique to each element. For example, there are six protons in a carbon nucleus; therefore, its atomic number is 6 on ...