Digital Signal and Image Processing in Jagiellonian Positron Emission Tomography

Description: Digital Signal and Image Processing in Jagiellonian Positron Emission Tomography by Lech Raczynski Estimated delivery 3-12 business days Format Paperback Condition Brand New Description The Jagiellonian PET (J-PET) Collaboration developed a novel whole-body PET scanner based on plastic scintillators, which reduce the high cost of PET scanners. Lech Raczyski presents new approaches to developing signal and image processing algorithms that take into account the specifications of the J-PET detector. Publisher Description Positron Emission Tomography (PET) is a key technique in the medical imaging area, which allows to diagnose the organism functions and to track the tumor changes. In PET measurement the patient is injected with radiotracer, containing a large number of metastable atoms of radionuclide, that emmits positrons. As the result of positron annihilation, the two photons travelling off with nearly opposite directions are produced and registered by detection system positioned so that it surrounds the patient body. State-of-the-art PET scanners use scintillation crystals which are characterized by high detection efficiency of annihilation photons. In this context, it is worth to mention that the Jagiellonian PET (J-PET) Collaboration developed a novel whole-body PET scanner based on plastic scintillators. They are much cheaper than crystal scintillators, which gives the opportunity to reduce the high cost of PET scanners and make them more affordable. However, plastic scintillators have much lower detection efficiency of gamma quanta compared to inorganic scintillation crystals. This can be compensated by increasing the scanner field of view and improving the time resolution in the measurement of the time of flight of gamma quanta. The J-PET scanner consists of plastic scintillator strips read out at both ends by a pair of photomultipliers and arranged axially around a cylindrical tomograph tunnel. The axial coordinate of the annihilation photon interaction point in the scintillator strip is derived from the difference of the light propagation time measured with the pair of photomultipliers. The operational principles of the J-PET scanner are similar to conventional tomographs, except that the highly accurate time information is of paramount importance. Therefore, the J-PET scanner demands a preparation of novel methods on each step of the data processing. The goal of the work presented in this dissertation is a development of the signal and image processing algorithms taking into account uniqueness of the J-PET detector. The proposed methods include: signal recovery based on samples of a waveform registered on photomultiplier output, reconstruction of position and time of interaction of annihilation photon in the scintillator strip, classification of PET events types and image reconstruction that operates exclusively in the image space. Due to the dissimilarity from the conventional PET scanners, majority of the methods presented in this dissertation are innovative solutions in digital signal and image processing in tomography. Author Biography Lech Raczyski graduated from the Faculty of Electronics and Information Technology onWarsaw University of Technology. His scientific interests lie in the area of compressed acquisitionmethods, data processing and analysis, artificial intelligence and probabilistic mathematics and theapplication of these disciplines, in particular in medicine. Since 2012, he belongs to the group atNational Centre for Nuclear Research, which cooperates with the Jagiellonian University in theconstruction of a modern PET tomograph. His efforts focus on the development of new conceptsand techniques for signal and image processing. Details ISBN 8323350159 ISBN-13 9788323350156 Title Digital Signal and Image Processing in Jagiellonian Positron Emission Tomography Author Lech Raczynski Format Paperback Year 2023 Pages 124 Publisher Uniwersytet Jagiellonski, Wydawnictwo GE_Item_ID:141839814; About Us Grand Eagle Retail is the ideal place for all your shopping needs! With fast shipping, low prices, friendly service and over 1,000,000 in stock items - you're bound to find what you want, at a price you'll love! Shipping & Delivery Times Shipping is FREE to any address in USA. Please view eBay estimated delivery times at the top of the listing. Deliveries are made by either USPS or Courier. We are unable to deliver faster than stated. 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