Podcast
Questions and Answers
What is the typical thickness range of scintillators used in gamma cameras for medical imaging?
What is the typical thickness range of scintillators used in gamma cameras for medical imaging?
- 3 to 6 mm
- 18 to 25 mm
- 12.5 to 18 mm
- 6 to 12.5 mm (correct)
What happens to the energy of gamma photons after interacting with the scintillation crystal?
What happens to the energy of gamma photons after interacting with the scintillation crystal?
- It is absorbed by the crystal
- It is converted to visible optical photons (correct)
- It is transmitted to the PMT
- It is reflected back to the environment
What is the function of the photomultiplier tube (PMT) in gamma detection?
What is the function of the photomultiplier tube (PMT) in gamma detection?
- To transmit the optical photons to the scintillation crystal
- To detect and convert optical photons into electrical signals (correct)
- To amplify the electrical signal from the scintillation crystal
- To detect and convert gamma photons into electrical signals
What is the relationship between the electric current and the number of detected optical photons in a PMT?
What is the relationship between the electric current and the number of detected optical photons in a PMT?
What is the peak wavelength of the optical photons transmitted by the NaI scintillator?
What is the peak wavelength of the optical photons transmitted by the NaI scintillator?
What happens to the photocathode when it receives optical photons in a PMT?
What happens to the photocathode when it receives optical photons in a PMT?
What is the typical method of preparing radiopharmaceuticals?
What is the typical method of preparing radiopharmaceuticals?
What type of syringes are used to transfer radiopharmaceutical components?
What type of syringes are used to transfer radiopharmaceutical components?
What is the purpose of a glove box in radiopharmaceutical preparation?
What is the purpose of a glove box in radiopharmaceutical preparation?
What is a characteristic of the surfaces in a radiopharmaceutical preparation room?
What is a characteristic of the surfaces in a radiopharmaceutical preparation room?
How do workers typically enter a radiopharmaceutical preparation room?
How do workers typically enter a radiopharmaceutical preparation room?
What type of device is commonly used in preparing PET radiopharmaceuticals?
What type of device is commonly used in preparing PET radiopharmaceuticals?
What is a crucial aspect to consider when selecting a scintillator for gamma ray detection in clinical use?
What is a crucial aspect to consider when selecting a scintillator for gamma ray detection in clinical use?
What is a common issue with Sodium iodide (NaI) scintillators?
What is a common issue with Sodium iodide (NaI) scintillators?
What is a benefit of using a scintillator with a high light output?
What is a benefit of using a scintillator with a high light output?
What is the primary reason Sodium iodide (NaI) scintillators are widely used in conventional gamma ray imaging systems?
What is the primary reason Sodium iodide (NaI) scintillators are widely used in conventional gamma ray imaging systems?
What is a characteristic of CsI(Na) scintillators?
What is a characteristic of CsI(Na) scintillators?
Why are NaI scintillators required to be sealed in airtight containers?
Why are NaI scintillators required to be sealed in airtight containers?
What is the primary limitation of using collimators in gamma imaging?
What is the primary limitation of using collimators in gamma imaging?
What is the purpose of the hexagonal structured holes in parallel hole collimators?
What is the purpose of the hexagonal structured holes in parallel hole collimators?
What is the main advantage of improving the ability of the gamma camera to detect primary gamma photons?
What is the main advantage of improving the ability of the gamma camera to detect primary gamma photons?
What determines the appropriate type of collimator for gamma ray detection?
What determines the appropriate type of collimator for gamma ray detection?
What is the function of the scintillator in gamma imaging?
What is the function of the scintillator in gamma imaging?
What is the common material used in making the high density plate of parallel hole collimators?
What is the common material used in making the high density plate of parallel hole collimators?
What is the main reason for minimizing scattered gamma photon penetration in the collimator body?
What is the main reason for minimizing scattered gamma photon penetration in the collimator body?
What is a key difference between parallel-hole collimators and non-parallel hole collimators?
What is a key difference between parallel-hole collimators and non-parallel hole collimators?
Which type of collimator is suitable for scanning small targeted areas?
Which type of collimator is suitable for scanning small targeted areas?
What is the primary application of pinhole collimators?
What is the primary application of pinhole collimators?
What is the typical diameter range of the aperture in a pinhole collimator?
What is the typical diameter range of the aperture in a pinhole collimator?
What is a key advantage of pinhole collimators in nuclear medicine clinics?
What is a key advantage of pinhole collimators in nuclear medicine clinics?
