How are PET images acquired?
In most PET scanners today, scintillation detectors are used as detection elements.
They couple inorganic scintillation crystals that emit visible or near ultraviolet light after interaction with an incident high-energy (511 keV) photon, to photo detectors that detect and measure the scintillation photons..
How does PET imaging work?
How does PET work? PET works by using a scanning device (a machine with a large hole at its center) to detect photons (subatomic particles) emitted by a radionuclide in the organ or tissue being examined..
How is the image captured when using a PET scan?
Images of the body are then taken using a PET scanner.
The camera detects emissions coming from the injected radiopharmaceutical, and the computer attached to the camera creates two and three-dimensional images of the area being examined..
What format is PET scan data?
PET imaging data are stored in .
- D (or
- D if only one volume was acquired) NIfTI files with a _pet suffix
What is detected in PET imaging?
In general, PET scans may be used to evaluate organs and/or tissues for the presence of disease or other conditions.
PET may also be used to evaluate the function of organs, such as the heart or brain.
The most common use of PET is in the detection of cancer and the evaluation of cancer treatment..
What is the future role of AI in PET imaging?
PET imaging has a low signal to noise ratio especially when compared to other imaging modalities and AI has been integral in working to change image reconstruction of PET scans to reduce noise and make images cleaner to interpret while also allowing for lower injection dose resulting in less radiation to the patient..
What type of information does a PET scan provide?
Positron emission tomography (PET) is a medical imaging procedure that provides unique information about how an organ or system in the body is working.
PET scans are mainly used to assess cancers, neurological (brain) diseases and cardiovascular (heart-related) disease..
- A small amount of radioactive glucose (a sugar) is injected into a vein.
The PET scanner rotates around the body and makes a picture of where glucose is being used in the brain.
Malignant tumor cells show up brighter in the picture because they are more active and take up more glucose than normal cells do. - PET imaging data are stored in .
- D (or
- D if only one volume was acquired) NIfTI files with a _pet suffix
- Preparation for the Procedure
You will be asked to follow the Limited Carbohydrate diet for the previous 24 hours before the date of your appointment.
Do not eat or drink anything, except water, for 6 hours before the exam.
You may drink water, as much water as you can would be helpful, until arrival.
