Podcast
Questions and Answers
What is the purpose of the complicated process of correction and normalization in PET imaging?
What is the purpose of the complicated process of correction and normalization in PET imaging?
- To reduce the exposure dosage to the patient
- To detect and eliminate random coincidences (correct)
- To increase the number of annihilation events
- To create clearer and more detailed images
Which type of event in PET imaging results from two separate annihilations with one gamma-ray from each detected within the timing window?
Which type of event in PET imaging results from two separate annihilations with one gamma-ray from each detected within the timing window?
- Random scattering
- Random coincidence (correct)
- Spurious coincidence
- Scattered coincidence
What is the impact of scattering on PET image quality?
What is the impact of scattering on PET image quality?
- It degrades image quality (correct)
- It enhances image clarity
- It increases the specificity of the images
- It reduces the exposure dosage to the patient
Which type of coincidence in PET imaging results from a single annihilation with one of the gamma-rays undergoing a small-angle Compton scatter?
Which type of coincidence in PET imaging results from a single annihilation with one of the gamma-rays undergoing a small-angle Compton scatter?
What aspect of radiation exposure in medical procedures is relatively low compared to exposure in natural settings?
What aspect of radiation exposure in medical procedures is relatively low compared to exposure in natural settings?
What facilitates the accurate quantification of radiopharmaceutical absorption in different areas in PET imaging?
What facilitates the accurate quantification of radiopharmaceutical absorption in different areas in PET imaging?
What is the result of the collision between an electron and a positron at low energies?
What is the result of the collision between an electron and a positron at low energies?
What triggers a 'true coincidence event' in PET?
What triggers a 'true coincidence event' in PET?
Why is a collimator not required for annihilation coincidence detection in PET?
Why is a collimator not required for annihilation coincidence detection in PET?
What time window must photons be absorbed within to be considered a 'true event' in PET?
What time window must photons be absorbed within to be considered a 'true event' in PET?
