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Questions and Answers
What is the biggest contributor to dead time in nuclear medicine imaging?
What is the biggest contributor to dead time in nuclear medicine imaging?
- Single events (correct)
- Scatter coincidence
- Prompt events
- True coincidence
In nuclear medicine imaging, what is a scatter coincidence?
In nuclear medicine imaging, what is a scatter coincidence?
- Events where a gamma ray photon scatters within the patient body before being detected (correct)
- All coincident events counted in the initial coincidence
- Occurs when two single photons from two separate annihilations are detected within the CTW
- Two annihilation photons from a single annihilation interaction are detected within the CTW
What is a random coincidence in nuclear medicine imaging?
What is a random coincidence in nuclear medicine imaging?
- Each annihilation photon surpassing a low energy threshold but not ultimately counted unless a coincident photon is detected
- All coincident events counted in the initial coincidence
- Events where a gamma ray photon scatters within the patient body before being detected
- Occurs when two single photons from two separate annihilations are detected within the CTW (correct)
What is the role of a capacitor?
What is the role of a capacitor?
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What does 'random incident' refer to in the context of gamma ray detection?
What does 'random incident' refer to in the context of gamma ray detection?
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What does 'system sensitivity' refer to in the context of imaging systems?
What does 'system sensitivity' refer to in the context of imaging systems?
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What does 'noise' refer to in the context of acquired data or images?
What does 'noise' refer to in the context of acquired data or images?
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How does pitch change the amount of radiation a patient is exposed to during a radiopharmaceutical procedure?
How does pitch change the amount of radiation a patient is exposed to during a radiopharmaceutical procedure?
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What are Hounsfield Units used for in a CT study?
What are Hounsfield Units used for in a CT study?
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What type of imaging does Magnetic Resonance Imaging (MRI) utilize?
What type of imaging does Magnetic Resonance Imaging (MRI) utilize?
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What type of imaging does Computed Tomography (CT) employ?
What type of imaging does Computed Tomography (CT) employ?
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