Abstract
Positron (PET) and Single photon tomography (SPECT) are both methods used to acquire data in nuclear medicine from the detection of gamma photons. While SPECT is normally performed by rotating a device such as one or more gamma cameras around a patient, conventional PET devices are normally composed of rings of individual detectors, such as small BGO crystals. The total number of such detectors can be very high, and requires clever electronic design to reduce the total number of components. In both PET and SPECT the data recorded must be reconstructed to form sets of transaxial slices, after various types of correction to remove sources of degradation such as scatter etc. Filtered backprojection as originally employed in both PET and SPECT is now being widely superseded by iterative techniques such as OSEM, which are increasing being operated in true 3D.
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OTT, R.J. (2007). EMISSION TOMOGRAPHY. In: Lemoigne, Y., Caner, A., Rahal, G. (eds) Physics for Medical Imaging Applications. NATO Science Series, vol 240. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-5653-6_22
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DOI: https://doi.org/10.1007/978-1-4020-5653-6_22
Publisher Name: Springer, Dordrecht
Print ISBN: 978-1-4020-5649-9
Online ISBN: 978-1-4020-5653-6
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