Nuclear Physics Exploring the Heart of Matter (2013) / Chapter Skim
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Highlight: Diagnosing Cancer with Positron Emission Tomography
Highlight: Diagnosing Cancer with Positron Emission Tomography
Pages 150-152
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From page 150... ...
has been used as a research tool in neuroscience and in diagnosing cancer.1 PET imaging makes use of the self-collimating nature of positron decay (see Figure PET 1) as two nearly collinear photons are used to locate an annihilation event.
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From page 151... ...
While this scheme reduces the cost of the scanner, there is a loss in resolution owing to the approximate nature of the light-sharing approach. There are prototype scanners using ava lanche photodiodes coupled to individual crystal elements, making the finer pixel identification better.
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From page 152... ...
The colored hot metal image is the PET image and the gray image is from the CT camera. The combined image enables physicians to determine the precise location of abnormal function (high uptake in the mass visible on the chest wall in the CT image in this case)
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