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Questions and Answers
What is the purpose of the coincidence timing window (CTW) in PET tomography event detection?
What is the purpose of the coincidence timing window (CTW) in PET tomography event detection?
- To ensure that two annihilation photons are detected within a specific time frame (correct)
- To determine the exact time of event occurrence
- To calculate the line of response (LOR) between two detectors
- To identify the location of the imaging table
What is the function of the detector blocks in a PET tomograph?
What is the function of the detector blocks in a PET tomograph?
- To estimate randoms using singles methods
- To identify the bed positions for image acquisition
- To display the 3D image matrix
- To detect and identify individual events and determine the line of response (LOR) (correct)
What is the purpose of multiple acquisitions in PET studies at different bed positions?
What is the purpose of multiple acquisitions in PET studies at different bed positions?
- To determine the scintillation light pattern for each crystal within the detector block
- To estimate randoms using delayed coincidence and singles methods
- To capture the entire area of interest in the imaging table (correct)
- To calculate the coincidence timing window (CTW)
What is used to identify the crystal that detected an event in PET tomography?
What is used to identify the crystal that detected an event in PET tomography?
What is the purpose of electronic detection of coincidence events in PET tomography?
What is the purpose of electronic detection of coincidence events in PET tomography?
What is the primary function of delayed coincidence and estimation from singles methods in PET tomography?
What is the primary function of delayed coincidence and estimation from singles methods in PET tomography?
What is the main difference between 2D and 3D PET imaging?
What is the main difference between 2D and 3D PET imaging?
How does 2D PET imaging improve image quality?
How does 2D PET imaging improve image quality?
What is the purpose of holding each event for several CTWs in delayed sinogram?
What is the purpose of holding each event for several CTWs in delayed sinogram?
Which type of PET imaging has fewer random and scatter coincidences?
Which type of PET imaging has fewer random and scatter coincidences?
How does 3D PET imaging differ from 2D PET imaging in terms of sensitivity?
How does 3D PET imaging differ from 2D PET imaging in terms of sensitivity?
What is the impact of 3D PET imaging retracting the septa?
What is the impact of 3D PET imaging retracting the septa?
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