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Title:Razvoj detektorjev za visoko ločljivo pozitronsko tomografijo
Authors:ID Grošičar, Borut (Author)
ID Korpar, Samo (Mentor) More about this mentor... New window
ID Cindro, Vladimir (Comentor)
Files:.pdf MAG_Grosicar_Borut_2012.pdf (23,90 MB)
MD5: 9682CDC24617BC68AC91AE7B230F35CB
PID: 20.500.12556/dkum/900b2e81-9ac6-4aa8-8ef1-5e8aa5fab4a9
 
Language:Slovenian
Work type:Master's thesis
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:V delu je predstavljen razvoj detektorjev za uporabo pri visokoločljivostni pozitronski tomografiji PET, positron emmision tomography). Pozitronska tomografija je dobro uveljavljena metoda tridimenzionalnega slikanja v nuklearni medicini za postavljanje diagnoze. Ker diagnoza temelji na opazovanju slik pridobljenih s slikanjem, je bistvena kvaliteta slike oz. ločljivost. Z motivacijo izboljšanja krajevne ločljivosti pri slikanju s pozitronsko tomografijo je nastal koncept PET sonde, ki znotraj omejenega vidnega polja izboljša prostorsko ločljivost obstoječega pozitronskega tomografa. Srce PET sonde je krajevno ločljiv silicijev senzor. V delu je opisan razvoj in karakterizacija silicijevih detektorjev za uporabo pri PET sondi, ter karakterizacija in umeritev detektorskih blokov za uporabo pri napravi PET v kombinaciji s PET sondo. V okviru tega dela je bil razvit večplastni način zlaganja silicijevih senzorjev, ki omogoča večjo verjetnost pri interakciji anihilacijskih fotonov energije 511 keV in kot tak obeta izboljšanje kvalitete slike pri slikanju s pozitronsko tomografijo v kombinaciji s PET sondo.
Keywords:Silicijevi senzorji, emisijska pozitronska tomografija, PET sonda, zlaganje senzorjev, zaporni tok
Place of publishing:Maribor
Publisher:[B. Grošičar]
Year of publishing:2012
PID:20.500.12556/DKUM-36839 New window
UDC:53
COBISS.SI-ID:19297800 New window
NUK URN:URN:SI:UM:DK:3V9CIUKJ
Publication date in DKUM:11.09.2012
Views:3112
Downloads:264
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:Development of detectors for high resolution positron tomography
Abstract:This work represents development of detectors for high resolution positron emission tomography (PET), which is a very well established 3 dimensional imaging method in nuclear medicine for disease diagnoses. Since the diagnoses is based on images taken, the quality or resolution is most important. In search for better spatial resolution, PET probe concept has been developed, that within a limited field of view improves spatial resolution of positron tomograph. The heart of PET probe is a position sensitive silicon sensor. In this work the development and characterization of silicon detectors for use in PET probe is described. In addition characterization and calibration of block detectors for use in PET with the combination of PET probe is described. In this regard multilayer stacking mode of silicon sensors has been developed in order to achieve better interaction probability for 511 keV annihilation photons. As such this multilayer stacking mode promises improvements in image quality of positron tomography in combination with PET probe.
Keywords:silicon sensors, positron emission tomography, sensor stacking, leakage current


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