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- True coincidences: Two annihilation photons are detected simultaneously by the PET scanner.
- Scatter coincidences: One annihilation photon scatters before being detected, creating a false coincidence event.
- Random coincidences: Two annihilation photons from different decays are detected simultaneously, leading to a false detection.
- Detector dead time: Events that occur when the detectors are unable to detect photons due to being in a recovery state.
- Phantom scattering: Events where photons scatter within the phantom being imaged, leading to erroneous signal detection.
What else can I help you with?
Name the five types of listening?
The five types of listening are active listening, critical listening, empathic listening, appreciative listening, and comprehensive listening.
What are the five types of uxo's?
The five types of UXOs (Unexploded Ordnance) are bombs, shells, grenades, landmines, and missiles. These devices did not explode as intended and remain unstable, posing a risk of detonation.
Name the five types of electromagnetic radiation that you can't see?
Types of electromagnetic radiation that you can't see includes:ultraviolet radiationinfrared radiationradio wavesmicrowavesgamma rays
What are five general types of chemical reactions and how are they identified?
The general types of chemical reactions are:- synthesis- decomposition- single replacement- double replacement
When paleontologist refer to the Big five to what are they referring?
The "Big Five" in paleontology refers to the five major mass extinction events that have significantly shaped the history of life on Earth. These events are the Ordovician-Silurian, Late Devonian, Permian-Triassic, Triassic-Jurassic, and Cretaceous-Paleogene extinctions. Each of these events led to substantial biodiversity loss and dramatic changes in ecosystems, influencing the evolution of surviving species. The study of these extinctions helps scientists understand the dynamics of biological crises and recovery.
Which 1995 movie was introduced Five criminals one line-up no coincidence?
The Usual Suspects
What are the five essay types?
The five essay types are:ExpositoryPersuasiveNarrativeDescriptiveDefinition
What are five types of software?
what are five types of software piracy
What are the five key events that led to Indiana's statehood?
What are the five key events that led to Indians statehood
What were the types of dinosaurs?
There are five types of dinosaurs.
What is a decathlon minus five events?
A decathlon is a combined event in track and field that consists of ten events, typically held over two days. If you subtract five events, you are left with a pentathlon, which includes five events. The pentathlon can vary in its specific events but often includes a combination of running, jumping, and throwing disciplines.
How many events in a pentatholon?
Five events.
What are the five types of drama?
the five types of drama are; tragedy, comedy, farce, fantasy and melodrama
What are the five types of dreams?
there are five types of dreams: ordinary, lucid, telepathic, premonitory, and nightmares.
How many types of registers?
registers are five types.
What are the five types of TPS in business organization and their functions?
what are the five types of TPS in business organisation and their functions
Five types of monarchical government in the world today?
five types of monarchical governments in the world today
