Gamma camera - Study guides, Class notes & Summaries

Nuclear Medicine Instrumentation Exam Questions with 100% Correct Answers The amount of light generated by a sodium iodide crystal is directly related to the: A. photon energy absorbed in the crystal B. Diameter of the crystal C. Thickness of the crystal D. Age of the crystal - answerA. photon energy absorbed in the crystal A NaI (Tl) scintillation detector provides an output signal from the photo-multiplier tube that is proportional in amplitude to the amount of energy absorbed in the c...

Instrumentation NMTCB Practice with Certified Solutions What is a gamma camera crystal made of? Sodium iodide activated with thallium What is the purpose of the crystal in a gamma camera? To absorb gamma (γ) rays and convert them into visible-light photons What is the mechanism by which gamma (γ) rays interact with a gamma camera crystal? Photoelectric effect or Compton scattering. What is the relationship between the energy of an absorbed gamma (γ) ray and the amount of light produced by...

Basic Gamma Camera Components -ANSWER Collimator, NaI scintillation crystal, light guide, PMT array How does the collimator work? -ANSWER Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. What information do event signals contain? -ANSWER Position and energy information (could also contain time information). Reflective Material Around Crystal -ANSWER Maximizes light output. Aluminum Casing Ar...

Basic Gamma Camera Components - correct answer Collimator, NaI scintillation crystal, light guide, PMT array How does the collimator work? - correct answer Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. What information do event signals contain? - correct answer Position and energy information (could also contain time information). Reflective Material Around Crystal - correct answer M...

Nuclear Medicine demonstrates: Ans: function Nuclear Medicine is under the radiology umbrella because: Ans: radiation is used Types of radiation used for conventional radiography Ans: Alpha, Beta, Particulate, Ionizing Types of radiation used for nuclear medicine Ans: Gamma Rays, Nonparticulate Source of radiation for conventional radiography Ans: x-ray tube Source of radiation for nuclear medicine Ans: patient Equipment used for conventional radiography Ans: x-ray tube and image re...

Nuclear Medicine Final Exam corBasic Gamma Camera Components -ANSWER Collimator, NaI scintillation crystal, light guide, PMT array How does the collimator work? -ANSWER Controls which gamma rays are accepted by absorptive collimation, forming a projected image of the distribution on the surface of the crystal. What information do event signals contain? -ANSWER Position and energy information (could also contain time information). Reflective Material Around Crystal -ANSWER Maximizes ligh...

Nuclides with the same atomic number but different numbers of neutrons are called? -ANSWER Isotopes Two nuclides with the same atomic numbers are called? -ANSWER Isobars Two nuclides with the same number of neutrons but different atomic numbers are called? -ANSWER Isotones What is a radionuclide? -ANSWER A nuclide that emits particular or photon energy to achieve a more stable energy state Another name for a helium ion containing two protons and two neutrons is? -ANSWER an alpha part...

Radioactive isotope used for majority of cases99m Technetium Why 99m Technetium- 99m Tc gamma emitter - scintillating crystal within gamma camera = detects gamma rays Half life of 99m Technetium6 hours 99 Molybdenum- 99m Technetium is there 'daughter' - moly decays into 99m Tech - half life = 3 days - as moly decays = so does 99m tech = less radioactivity to work with

Nuclear Medicine Final Exam 2023 Basic Gamma Camera Components - ANS->>Collimator, NaI scintillation crystal, light guide, PMT array How does the collimator work?...

For what purpose are radiopharmaceuticals administered Answer Diagnose, treat and assess pathologies What is a kit? Answer Vial containing pharmaceuticals which, when combined with radionuclides, become radiopharmaceuticals Which NM imaging procedure is used to assess perfusion to the heart? Answer Myocardial perfusion scan (MPS) What does the term 'hot' mean with respect to radioactivity Answer High concentration of radioactivity / radioactive List the challenges associated with N...