Physics A-Level
Coincidence detection
What Coincidence detection means in Physics A-Level, as defined for OCR.
Definition of Coincidence detection
Check what you remember
Read the wording for your board, then hide it and explain Coincidence detection in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Two detectors on opposite sides of a ring surrounding the patient register photons within a very short coincidence time window, so the annihilation event is assumed to lie on the line joining them.
Topics that use Coincidence detection
- Diagnostic methods in medicine (OCR A-Level)
Related terms
- Annihilation
- Clinical diagnosis from count maps
- Collimator
- Computer
- Fluorine–18
- Functional medical imaging
- Medical tracer
- Metabolic imaging in diagnosis
Using Coincidence detection in the exam
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