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Dissertations / Theses on the topic 'Gama kamera'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Smrčková, Alena. "Design kardiologické gama kamery." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319481.

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Tématem této diplomové práce je design kardiologické gama kamery. Hlavním cílem práce je navrhnout originální, vizuálně i ergonomicky vyvážený design pro sedícího či napůl ležícího pacienta s využitím nejnovějších technologií s důrazem na propojení dílčích segmentů v kompaktní celek.

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2

Girma, Menkir. "Untersuchung des Gesichtsfelds der HEGRA-Kamera auf unbekannte TeV-gamma-Quellen." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10605066.

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3

Tylš, Ladislav. "Získávání dat z kamer." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217760.

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This thesis describes the principles of making application which is able to set and control camera. The first part describes basic camera connections and it explains definition and specification of camera’s features. The second part of my thesis describes implementation of application, which can use more cameras to image preview, image acquisition and to simply set of camera’s features. To implement the applications we can use MATLAB and C++BUILDER uses opencv libraries.

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4

Jung, Ira. "Entwicklung der Spiegelmechanik, Eichung der Kamera und erste Ergebnisse zum Nachweis hochenergetischer gamma-Strahlung aus Richtung des Krebsnebels und PKS 2155-304 mit dem ersten H.E.S.S.-Teleskop." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10605103.

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5

Golnik, Christian. "Treatment verification in proton therapy based on the detection of prompt gamma-rays." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-227948.

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Background The finite range of a proton beam in tissue and the corresponding steep distal dose gradient near the end of the particle track open new vistas for the delivery of a highly target-conformal dose distribution in radiation therapy. Compared to a classical photon treatment, the potential therapeutic benefit of a particle treatment is a significant dose reduction in the tumor-surrounding tissue at a comparable dose level applied to the tumor. Motivation The actually applied particle range, and therefor the dose deposition in the target volume, is quite sensitive to the tissue compositio

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6

Hueso, González Fernando. "Nuclear methods for real-time range verification in proton therapy based on prompt gamma-ray imaging." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-204988.

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Accelerated protons are excellent candidates for treating several types of tumours. Such charged particles stop at a defined depth, where their ionisation density is maximum. As the dose deposit beyond this distal edge is very low, proton therapy minimises the damage to normal tissue compared to photon therapy. Nonetheless, inherent range uncertainties cast doubts on the irradiation of tumours close to organs at risk and lead to the application of conservative safety margins. This constrains significantly the potential benefits of proton over photon therapy and limits its ultimate aspirations.

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7

Rohling, Heide. "Simulation studies for the in-vivo dose verification of particle therapy." Helmholtz-Zentrum Dresden - Rossendorf, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-175213.

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An increasing number of cancer patients is treated with proton beams or other light ion beams which allow to deliver dose precisely to the tumor. However, the depth dose distribution of these particles, which enables this precision, is sensitive to deviations from the treatment plan, as e.g. anatomical changes. Thus, to assure the quality of the treatment, a non-invasive in-vivo dose verification is highly desired. This monitoring of particle therapy relies on the detection of secondary radiation which is produced by interactions between the beam particles and the nuclei of the patient’s tissu

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8

Freudenberg, Robert, Rudi Apolle, Martin Walther, Holger Hartmann, and Jörg Kotzerke. "Molecular imaging using the theranostic agent 197(m)Hg: phantom measurements and Monte Carlo simulations." Springer Open, 2018. https://tud.qucosa.de/id/qucosa%3A33332.

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Background Radiomercury 197mHg and 197Hg, henceforth referred to as 197(m)Hg, is a promising theranostic radionuclide endowed with properties that allow diagnostic and therapeutic applications. The aim of this work was to investigate the capabilities of 197(m)Hg for nuclear medicine imaging. Therefore measurements were performed by using a Philips BrightView SPECT camera. Furthermore, Monte Carlo simulations using the GATE software were performed to theoretically explore the imaging contribution from the various gamma and X-ray emissions from 197(m)Hg for a commercial clinical camera with low-

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9

Ström, Seez Jonas, and Fann Frederick Holmer. "Development of an MRI-compatible Multi-compartment Phantom for Dynamic Studies." Thesis, KTH, Medicinteknik och hälsosystem, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276996.

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Medical imaging based on radioactive tracers exposes the patient to radiation. For this reason, a phantom is preferably used for non-clinical studies such as routine quality assurance and research. The aim of this project was to design, build and test a multi-compartment phantom to be used in dynamic SPECT/CT, PET/CT and PET/MRI studies. By treating each compartment as a biological system and plotting activity distribution, desired characteristics of the phantom can be obtained. A software program was created to simulate compartment activity distribution for different input parameters. Such pa

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10

[Verfasser], Menkir Girma. "Untersuchung des Gesichtsfelds der HEGRA-Kamera auf unbekannte TeV-γ-Quellen [TeV-Gamma-Quellen] / vorgelegt von Menkir Girma". 2003. http://d-nb.info/967788455/34.

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11

Mánek, Petr. "Systém pro 3D lokalizaci zdrojů gamma záření Comptonovou kamerou založenou na detektorech Timepix3." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-387338.

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Compton cameras localize γ-ray sources in 3D space by observing evidence of Compton scattering with detectors sensitive to ionizing radiation. This thesis proposes a software system for operating a novel Compton camera device comprised of Timepix3 detectors and Katherine readouts. To communicate with readouts using UDP-based protocol, a dedicated hardware library was developed. The presented software can successfully control the acquisition of multiple Timepix3 detectors and simultaneously process their measurements in a real-time setting. To recognize instances of Compton scattering among obs

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12

Jung, Ira [Verfasser]. "Entwicklung der Spiegelmechanik, Eichung der Kamera und erste Ergebnisse zum Nachweis hochenergetischer γ-Strahlung [Gamma-Strahlung] aus Richtung des Krebnebels [Krebsnebels] und PKS 2155-304 mit dem ersten H.E.S.S.-Teleskop / vorgelegt von Ira Jung". 2003. http://d-nb.info/968338178/34.

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13

Jung, Ira Verena [Verfasser]. "Entwicklung der Spiegelmechanik, Eichung der Kamera und erste Ergebnisse zum Nachweis hochenergetischer γ-Strahlung [Gamma-Strahlung] aus Richtung des Krebnebels [Krebsnebels] und PKS 2155-304 mit dem ersten H.E.S.S.-Teleskop / vorgelegt von Ira Jung". 2003. http://d-nb.info/968338178/34.

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14

Golnik, Christian. "Treatment verification in proton therapy based on the detection of prompt gamma-rays." Doctoral thesis, 2016. https://tud.qucosa.de/id/qucosa%3A30476.

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Abstract:

Background The finite range of a proton beam in tissue and the corresponding steep distal dose gradient near the end of the particle track open new vistas for the delivery of a highly target-conformal dose distribution in radiation therapy. Compared to a classical photon treatment, the potential therapeutic benefit of a particle treatment is a significant dose reduction in the tumor-surrounding tissue at a comparable dose level applied to the tumor. Motivation The actually applied particle range, and therefor the dose deposition in the target volume, is quite sensitive to the tissue compositi

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15

Hueso, González Fernando. "Nuclear methods for real-time range verification in proton therapy based on prompt gamma-ray imaging." Doctoral thesis, 2015. https://tud.qucosa.de/id/qucosa%3A29620.

Full text

Abstract:

Accelerated protons are excellent candidates for treating several types of tumours. Such charged particles stop at a defined depth, where their ionisation density is maximum. As the dose deposit beyond this distal edge is very low, proton therapy minimises the damage to normal tissue compared to photon therapy. Nonetheless, inherent range uncertainties cast doubts on the irradiation of tumours close to organs at risk and lead to the application of conservative safety margins. This constrains significantly the potential benefits of proton over photon therapy and limits its ultimate aspiration

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