Log in

Relevant bibliographies by topics / Geant4 application for emission tomography

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers
Reports

Academic literature on the topic 'Geant4 application for emission tomography'

Author: Grafiati

Published: 10 September 2021

Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Geant4 application for emission tomography.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Geant4 application for emission tomography"

1

Zioga, M., J. Menis, S. Apostolopoulou, D. Maintas, M. Mikeli, A. Nikopoulou, A. N. Rapsomanikis, and E. Stiliaris. "GEANT4/GATE Simulation Studies in the Emission Tomography." HNPS Proceedings 19 (January 1, 2020): 50. http://dx.doi.org/10.12681/hnps.2515.

Full text

Abstract:

Radiotracer imaging studies for a small field, high resolution ∞-Camera system and a clinical system for Positron Emission Tomography (PET) by means of GATE (GEANT4 Application for Tomographic Emission) simulations are presented in this work. In a validation phase, which preceded the main study, experimentally obtained results for planar images with the existing ∞-Camera system were directly compared to simulated data. A simple phantom structure, consisting of four parallel capillaries filled with 99mTc water solution, was imaged by the γ-Camera system for several phantom-collimator distances and the measured and Monte-Carlo calculated spatial projections were compared. The major objective of this validation study was the optimal description of the most important components, the hexagonal, parallel-hole Pb-collimator and the pixelated CsI scintillation crystal of the γ-imaging system in terms of GATE components. In the main study, a GATE simulation setup for this ∞-Camera detector is used and Monte-Carlo data are accumulated for simple geometrical phantoms with different monophotonic radiotracer energies and relative intensities. In parallel, a commercially available cylindrical shaped PET scanner ring, consisting of 32 sectors with 4 x 6 x 6 LSO scintillation crystals, has been constructed in the GATE environment. Simulation data are obtained for the most usual positron emitters (18F, 11C and 15O) and for several phantom geometries. The spatial resolution of both systems and their overall performance is presented and discussed in this study.

APA, Harvard, Vancouver, ISO, and other styles

2

Mohammed, Mohammed Siddig H., Essam M. Banoqitah, Ezzat Elmoujarkach, Abdulsalam M. Alhawsawi, and Fathi Djouider. "A virtual laboratory for radiotracer and sealed-source applications in industry." Nukleonika 66, no. 1 (March 1, 2021): 21–27. http://dx.doi.org/10.2478/nuka-2021-0003.

Full text

Abstract:

Abstract Radioactive sealed sources and radiotracer techniques are used to diagnose industrial process units. This work introduces a workspace to simulate four sealed sources and radiotracer applications, namely, gamma scanning of distillation columns, gamma scanning of pipes, gamma transmission tomography, and radiotracer flow rate measurements. The workspace was created in Geant4 Application for Tomographic Emission (GATE) simulation toolkit and was called Industrial Radioisotope Applications Virtual Laboratory. The flexibility of GATE and the fact that it is an open-source software render it advantageous to radioisotope technology practitioners, educators, and students. The comparison of the simulation results with experimental results that are available in the literature showed the effectiveness of the virtual laboratory.

APA, Harvard, Vancouver, ISO, and other styles

3

Zioga, M., A. Nikopoulou, M. Alexandridi, D. Maintas, M. Mikeli, A. N. Rapsomanikis, and E. Stiliaris. "Image Reconstruction in the Positron Emission Tomography." HNPS Proceedings 20 (December 1, 2012): 73. http://dx.doi.org/10.12681/hnps.2490.

Full text

Abstract:

Positron Emission Tomography (PET) has become a valuable tool with a broad spectrum of clinical applications in nuclear imaging. PET scanners can collect in vivo information from positron radiotracer distributions, which is further recon- structed to a tomographic image with the help of well established analytical or iterative algorithms. In this current work, an innovative PET image reconstruction method from raw data based on a simple mathematical model is presented. The developed technique utilizes the accumulated density distribution in a predefined voxelized volume of interest. This distribution is calculated by intersecting and weighting the two-gamma annihilation line with the specified voxels. In order to test the efficiency of the new algorithm, GEANT4/GATE simulation studies were performed. In these studies, a cylindrical PET scanner was modeled and the photon interaction points are validated on an accurate physical basis. An appropriate cylin- drical phantom with different positron radiotracers was used and the reconstructed results were compared to the original phantom.

APA, Harvard, Vancouver, ISO, and other styles

4

Chen, Hong Lei, Jian Feng He, Lei Ma, and Jun Qing Liu. "A Simple Calculation of System Matrix Base on 2-D Index." Applied Mechanics and Materials 339 (July 2013): 247–52. http://dx.doi.org/10.4028/www.scientific.net/amm.339.247.

Full text

Abstract:

The system matrix plays an important role in the improvement of medical image reconstruction quality in iterative reconstruction. It consists of a certain sequence of projection coefficients. Projection coefficients indicate the radiological path through a tow-dimensional grid array which is constructed based on the reconstructed image. It is a common geometric problem of evaluating the radiological path through the grid array. This paper identifies the inefficient aspect of the traditionally precise evaluation of the radiological path. A new accurate and simple algorithm is presented, which considers that the projection coefficients can be shown in two-dimensional way. Experimental results based on GATE (Geant4 Application for Tomographic Emission) simulating PET (Positron Emission Tomography) imaging shows that the proposed algorithm is efficient to build up a system matrix, and the image can be reconstructed by the system matrix.

APA, Harvard, Vancouver, ISO, and other styles

5

Hu, Yang Sheng, Jun Zhang, Rui Cui, Yan Xiang, Lei Ma, San Li Yi, Dang Guo Shao, and Jian Feng He. "An Initial Study for PET Imaging Simulation." Applied Mechanics and Materials 513-517 (February 2014): 612–15. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.612.

Full text

Abstract:

Simulation play an important role in the research of PET/CT imaging technology. In this paper, GATE (Geant4 Application Tomography Emission) software packages and NCAT(dynamic NURBS-based cardiac-torso phantom) were used to simulate GE ST PET/CT imaging. GATE provides abundant of functions to simulate both PET/CT imaging procedure and geometric phantom generation. NCAT can generate voxlised body torso phantom. Three different kinds of digital phantoms were designed and generated for PET/CT imaging simulation. The simulation output of GATE was converted to the data format that the STIR (Software for Tomographic Image Reconstruction) requires to reconstruct image by the OSEM (ordered subsets expectation-maximization) algorithm. The experiment results validate that GATE and NCAT are able to simulate PET/CT imaging.

APA, Harvard, Vancouver, ISO, and other styles

6

Yin, Yongzhi, Yingguo Li, Tianguan Wang, Chuan Huang, Zhenqian Ye, and Gongping Li. "A Prototype VP-PET Imaging System Based on Highly Pixelated CdZnTe Detectors." Sensors 20, no. 5 (February 27, 2020): 1294. http://dx.doi.org/10.3390/s20051294.

Full text

Abstract:

We investigated a prototype virtual-pinhole positron emission tomography (PET) system for small-animal imaging applications. The PET detector modules were made up of 1.3 mm lutetium-yttrium oxyorthosilicate (LYSO) arrays, and the insert detectors consisted of 0.6 mm pixelated cadmium zinc telluride (CdZnTe). To validate the imaging experiment, we did a Monte Carlo simulation for the virtual-pinhole PET (VP-PET) system in the Geant4 Application for Emission Tomography (GATE). For a point source of 22Na with a 0.5 mm diameter, the filtered back-projection algorithm-reconstructed PET image showed a resolution of 0.7 mm full-width-at-half-maximum. The system sensitivity was 0.46 cps/kBq at the center of the field view of the PET system with a source activity of 0.925 MBq and an energy window of 350 to 650 keV. A rod source phantom and a Derenzo phantom with 18F were also simulated to investigate the PET imaging ability. GATE simulation indicated that sources with 0.5 mm diameter could be clearly detected using 0.6 mm pixelated CdZnTe detectors as insert devices in a VP-PET system.

APA, Harvard, Vancouver, ISO, and other styles

7

Michail, Christos, George Karpetas, Nektarios Kalyvas, Ioannis Valais, Ioannis Kandarakis, Kyriakos Agavanakis, George Panayiotakis, and George Fountos. "Information Capacity of Positron Emission Tomography Scanners." Crystals 8, no. 12 (December 9, 2018): 459. http://dx.doi.org/10.3390/cryst8120459.

Full text

Abstract:

Background: The aim of the present study was to assess the upper information content bound of positron emission tomography (PET) images, by means of the information capacity (IC). Methods: The Geant4 Application for the Tomographic Emission (GATE) Monte Carlo (MC) package was used, and reconstructed images were obtained by using the software for tomographic image reconstruction (STIR). The case study for the assessment of the information content was the General Electric (GE) Discovery-ST PET scanner. A thin-film plane source aluminum (Al) foil, coated with a thin layer of silica and with a 18F-fludeoxyglucose (FDG) bath distribution of 1 MBq was used. The influence of the (a) maximum likelihood estimation-ordered subsets-maximum a posteriori probability-one step late (MLE-OS-MAP-OSL) algorithm, using various subsets (1 to 21) and iterations (1 to 20) and (b) different scintillating crystals on PET scanner’s performance, was examined. The study was focused on the noise equivalent quanta (NEQ) and on the single index IC. Images of configurations by using different crystals were obtained after the commonly used 2-dimensional filtered back projection (FBP2D), 3-dimensional filtered back projection re-projection (FPB3DRP) and the (MLE)-OS-MAP-OSL algorithms. Results: Results shown that the images obtained with one subset and various iterations provided maximum NEQ values, however with a steep drop-off after 0.045 cycles/mm. The single index IC data were maximized for the range of 8–20 iterations and three subsets. The PET scanner configuration incorporating lutetium orthoaluminate perovskite (LuAP) crystals provided the highest NEQ values in 2D FBP for spatial frequencies higher than 0.028 cycles/mm. Bismuth germanium oxide (BGO) shows clear dominance against all other examined crystals across the spatial frequency range, in both 3D FBP and OS-MAP-OSL. The particular PET scanner provided optimum IC values using FBP3DRP and BGO crystals (2.4829 bits/mm2). Conclusions: The upper bound of the image information content of PET scanners can be fully characterized and further improved by investigating the imaging chain components through MC methods.

APA, Harvard, Vancouver, ISO, and other styles

8

Strulab, D., G. Santin, D. Lazaro, V. Breton, and C. Morel. "GATE (geant4 application for tomographic emission): a PET/SPECT general-purpose simulation platform." Nuclear Physics B - Proceedings Supplements 125 (September 2003): 75–79. http://dx.doi.org/10.1016/s0920-5632(03)90969-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Bruggemann, Jeremy, Andreas Gross, and Stephen Pate. "Non-Intrusive Visualization of Optically Inaccessible Flow Fields Utilizing Positron Emission Tomography." Aerospace 7, no. 5 (April 29, 2020): 52. http://dx.doi.org/10.3390/aerospace7050052.

Full text

Abstract:

A technology gap persists in the visualization of optically inaccessible flow fields such as those in integrated systems. Advances in positron emission tomography (PET) technology are enabling its use in the engineering field to address this technology gap. This paper discusses a numerical study performed to characterize a modern PET system’s ability to reconstruct a three-dimensional mapping of the optically inaccessible flow field downstream of an orifice. A method was devised to simulate a ring detector response to a flourine-18 radioisotope/water solution injected into the flow through a standard thickness pipe with orifice. A commercial computational fluid dynamics code and the GEANT4 Applications for the Tomographic Emission Monte Carlo simulation physics package were used to carry out the simulations. Results indicate that geometrical features, such as the pipe internal diameter, can be resolved to within a few millimeters with specific activity levels of 155 Bq/Voxel (91.2 Bq/mm3), and acquisition times as low as 15 s. Results also suggest that flow features, such as the radial extent of the shear layer between the primary and secondary recirculating flow can be resolved to within 5 mm with the same activity level, but with acquisition times of 45 s.

APA, Harvard, Vancouver, ISO, and other styles

10

Ahangari, HadiTaleshi, RohollahGhahraman Asl, Rezvan Sabbaghi, Payman Hejazi, and Majid Foroutan. "Prediction of Absorbed Dose to Normal Organs with Endocrine Tumors for I-131 by use of 99mTC Single Photon Emission Computed Tomography/Computed Tomography and Geant4 Application for Tomographic Emission Simulation." Indian Journal of Nuclear Medicine 36, no. 3 (2021): 273. http://dx.doi.org/10.4103/ijnm.ijnm_6_21.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Geant4 application for emission tomography"

1

Guy, Matthew John. "The application of quantitative single emission tomography." Thesis, Institute of Cancer Research (University Of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326266.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Aly, Moamen. "The application of positron emission tomography in radiotherapy treatment planning." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/the-application-of-positron-emission-tomography-in-radiotherapy-treatment-planning(23a8d56c-c6da-4e3f-a27e-6ecbc979c86e).html.

Full text

Abstract:

Positron emission tomography (PET) is a molecular imaging technique that provides a direct and accurate evaluation of tissue function in vivo. PET of the glucose analogue 18F-fluoro-deoxy-glucose, is increasingly in use to aid in gross target volume delineation in radiotherapy treatment planning (RTP) where it shows reduced inter-observer variability. The aim of this thesis was to develop and investigate a new technique for delineating PET-GTV with sufficient accuracy for RTP. A new technique, volume and contrast adjusted thresholding (VCAT), has been developed to automatically determine the optimum threshold value that measures the true volume on PET images. The accuracy was investigated in spherical and irregular lesions in phantoms using both iterative and filtered back-projection reconstructions and different image noise levels. The accuracy of delineation for the irregular lesions was assessed by comparison with CT using the Dice Similarity Coefficient and Euclidean Distance Transformation. A preliminarily investigation of implementing the newly developed technique in patients was carried out. VCAT proved to determine volumes and delineate tumour boundaries on PET/CT well within the acceptable errors for radiotherapy treatment planning irrespective of lesion contrast, image noise level and reconstruction technique.

APA, Harvard, Vancouver, ISO, and other styles

3

Persson, Daniel. "Application of GEANT4 toolkit for simulations of high gradient phenomena." Thesis, Uppsala universitet, FREIA, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353347.

Full text

Abstract:

To study electron emissions and dark currents in the accelerating structures in particle colliders, a test facility with a spectrometer has been constructed at CERN. This spectrometer has been simulated in the C++ toolkit GEANT4 and in this project the simulation has been improved to handle new realistic input data of the emitted electrons. The goal was to find relations between where the electrons are emitted inside the accelerating structure and the energy or position of the particles measured by the spectrometer. The result was that there is a linear relation between the initial position of the electrons and the width in the positions of the particles measured by the spectrometer. It also appears to be a relations between energy the emitted electrons get in the accelerating structure, which is related to the position, and the energy they deposit in the spectrometer. Further studies where the simulations are compared with real measurement data are required to determine whether these relations are true or not, find better reliability in the relations and get a better understanding of the phenomena.

APA, Harvard, Vancouver, ISO, and other styles

4

Maguire, Ralph Paul. "Application of pharmacokinetic models to projection data in positron emission tomography." Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/844467/.

Full text

Abstract:

In positron emission tomography (PET), coincidence detection of annihilation photons enables the measurement of Radon transforms of the instantaneous activity concentration of labelled tracers in the human body. Using reconstruction algorithms, spatial maps of the activity distribution can be created and analysed to reveal the pharmacokinetics of the labelled tracer. This thesis considers the possibility of applying pharmacokinetic modelling to the count rate data measured by the detectors, rather than reconstructed images, A new concept is proposed - parameter projections - Radon transforms of the spatial distribution of the parameters of the model, which simplifies the problem considerably. Using this idea, a general linear least squares GLLS framework is developed and applied to the one and two tissue-compartment models for [O-15]water and [F-18]FDG. Simulation models are developed from first principles to demonstrate the accuracy of the GLLS approach to parameter estimation. This requires the validation of the whole body distribution of each of the tracers, using pharmacokinetic techniques, leading to novel compartment based whole body models for [O-15]water and [F-18]FDG. A simplified Monte-Carlo framework for error estimation of the tissue models is developed, based on system parameters. It is also shown that the variances of maps of the spatial variance of the parameters of the model - parametric images - can be calculated in projection space. It is clearly demonstrated that the precision of the variance estimates is higher than that obtained from estimates based on reconstructed images. Using the methods, it is shown how statistical parametric maps of the difference between two neuronal activation conditions can be calculated from projection data. The methods developed allow faster results analysis, avoiding lengthy reconstruction of large data sets, and allow access to robust statistical techniques for activation analysis through use of the known, Poisson distributed nature, of the measured projection data.

APA, Harvard, Vancouver, ISO, and other styles

5

Cree, Michael J. "The Compton Scattering Camera in application to single photon emission computed tomography." Thesis, University of Canterbury. Electrical and Electronic Engineering, 1994. http://hdl.handle.net/10092/6756.

Full text

Abstract:

A study of the Compton Scattering Camera in application to single photon emission computed tomography has been carried out and is presented in this thesis. It is shown that conventional gamma camera technology is fundamentally restricted by the collimator. The collimator places restrictions on camera sensitivity and on achievable reconstructed spatial resolution. The Compton scattering camera is proposed as an alternative to conventional gamma camera technology. The Compton scattering camera uses the process of Compton scattering to determine where a photon has come from. This results in a significant improvement to camera sensitivity and opens up the potential for improved spatial resolving power. An analytical model describing the Compton scattering camera is applied and studied. Suggestions are made regarding the design of a practical camera. It is shown that while a significant gain in sensitivity is achieved by the use of the alternative camera, many more measurement data bins are generated. The latter leads to poor photon counts in each data bin in situations encountered in practical medical imaging. Suggestions are made as to how to combat this problem. The use of Compton scattering to localise a photon direction vector leads to a new and complicated image reconstruction problem. Iterative algorithms have been devised for the image reconstruction by others and are reviewed herein. Progress towards developing a theory of direct image reconstruction is reported. To this end the notion of the cone-surface projection is introduced. It is shown that a certain subset of data, namely the restricted cone-surface projection, is invertible leading to a formula giving the source distribution in terms of the projections. Hence, the reconstruction problem, in the absence of noise uncertainties, is overspecified. Two possible reconstruction paths are outlined. One is direct reconstruction based on the restricted cone-surface projections. The other forms the cone-beam projections from the cone-surface projections and employs standard cone-beam reconstruction. Results of computer simulation of the reconstruction paths are reported. The direct reconstruction is robust with respect to some angular uncertainty and missing low angle scattering. The formation of the parallel-ray projection from the restricted cone-surface projection appears to be adversely susceptible to such measurement uncertainty. These studies are carried out without accounting for photon noise. For the algorithms to be practically useful, it is necessary that the theorems relating to the restricted cone-surface projection be generalised to cover the full cone-surface projection. Suggestions as to how this may be done are given. To perform the direct reconstruction from the restricted cone-surface projection. it is necessary to numerically evaluate the Hankel transform. The literature on Hankel transform algorithms is somewhat fragmented; a review of Hankel transform algorithms is therefore presented. Results of testing of a variety of zero-order Hankel transform algorithms are reported. It is found that algorithms based on the trapezoidal rule and the back-projection method with Fourier interpolation lead to the most accurate Hankel transforms in general. Unfortunately these algorithms are relatively computationally expensive. More efficient algorithms, such as the projection-slice method with Hansen and Law's method of evaluating the Abel transform, may be suitable in applications where less accuracy can be tolerated.

APA, Harvard, Vancouver, ISO, and other styles

6

Aryal, Bijaya. "Transfer of learning with an application to the physics of positron emission tomography." Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/351.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Mills, J. A. "Theory of longitudinal emission computed tomography and the practical application to cardiac imaging." Thesis, University of Warwick, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Dunkley, Paul. "The investigation and application of OET (Optical Emission Tomography) as a combustion diagnostic." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403115.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Link, Jeanne Meyers. "Mixed-mode chromatographic separation and whole column radiation detection to improve sensitivity in radiometabolite analysis : application to (Carbon-11)-meta-hydroxyephedrine in plasma /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/8578.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Yu, Haiming. "Analog ASICs for a Depth of Interaction (DOI) Positron Emission Tomography (PET) dectector module /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6066.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Books on the topic "Geant4 application for emission tomography"

1

Mills, John Alexander. Theory of longitudinal emission computed tomography and the practical application to cardiac imaging. [s.l.]: typescript, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

Narayana, Shalini, Andrew B. Newberg, and Abass Alavi. Positron Emission Tomography. Edited by Andrew C. Papanicolaou. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199764228.013.9.

Full text

Abstract:

This chapter describes the application of positron emission tomography (PET) technology to study neurotransmitter systems. The process of developing radiotracers to study the neurotransmitter systems, namely radioligands and the technical aspects of utilizing these radiotracers in PET imaging, is discussed. Normal distribution of neurotransmitters including dopamine, serotonin, opioids, and γ-aminobutyric acid (GABA), as well as abnormalities of these systems in various neurological and psychiatric disorders, are highlighted. The chapter provides evidence that radioligand imaging has been useful not only in delineating pathophysiological processes in psychiatric disorders, but also in contributing to the diagnosis, prognosis, and disease course, and in assessing drug effects. Recent advances in receptor imaging that are rapidly gaining clinical relevance are also discussed.

APA, Harvard, Vancouver, ISO, and other styles

3

Narayana, Shalini, Babak Saboury, Andrew B. Newberg, Andrew C. Papanicolaou, and Abass Alavi. Positron Emission Tomography. Edited by Andrew C. Papanicolaou. Oxford University Press, 2014. http://dx.doi.org/10.1093/oxfordhb/9780199764228.013.8.

Full text

Abstract:

Positron emission tomography (PET) is an imaging method that utilizes compounds labeled with positron-emitting radioisotopes as molecular probes to evaluate different neurophysiological processes quantitatively and noninvasively. This chapter provides a background regarding positron emission, radiotracer chemistry, and detector and scanner instrumentation, as well as analytical methods for evaluating basic brain physiology, such as cerebral blood flow and oxygen and glucose metabolism. The methodological aspects of PET imaging, such as patient preparation and optimal scanning parameters, are discussed. Examples of application of blood flow and metabolic imaging in both research and clinical scenarios for the evaluation of normal neurophysiology are provided. Recent advances in PET imaging, including PET-CT and PET-MRI, are also described. Finally, the unique strengths of PET imaging are highlighted.

APA, Harvard, Vancouver, ISO, and other styles

4

PET in Oncology: Basics and Clinical Application. Springer, 2001.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Wang, Sigen, Otto Zhou, and Sha Chang. Carbon-nanotube field emission electron and X-ray technology for medical research and clinical applications. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533060.013.19.

Full text

Abstract:

This article describes carbon-nanotube based X-ray technologies for medical research and clinical applications, including an X-ray source, microfocus X-ray tube, microcomputed tomography scanner, stationary digital breast tomosynthesis, microradiotherapy system, and single-cell irradiation system. It first examines electron field emission from carbon nanotubes before discussing carbon-nanotube field emission electron and X-ray technologies in greater detail. It highlights the enormous promise of these systems in commercial and research application for the future in diagnostic medical imaging; in-vivo imaging of small-animal modelsfor pre-clinical cancer studies; security screening; industrial inspection; cancer radiotherapy of small-animal models for pre-clinical cancer studies; and basic cancer research using single-cell irradiation.

APA, Harvard, Vancouver, ISO, and other styles

6

Chadwick, David, Alastair Compston, Michael Donaghy, Nicholas Fletcher, Robert Grant, David Hilton-Jones, Martin Rossor, Peter Rothwell, and Neil Scolding. Investigations. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198569381.003.0100.

Full text

Abstract:

This chapter describes the many methods that can be used to investigate neurological disorders. The application and suitability for specific disorder types are outlined, as are contraindications for use. Methods of imaging the central nervous system include computed tomography (CT) imaging, several magnetic resonance (MR) scanning methods, Single photon emission computed tomography (SPECT) and Positron Emission Tomography (PET). Invasive (angiography) and non-invasive methods of imaging the cerebral circulation are also outlined.The standard method of recording electrical activity of the brain is the electroencephalogram (EEG), which is heavily used in epilepsy to investigate regions of epileptogenesis.Other investigations described include evoked potentials, nerve conduction and electromyography studies, the examination of cerebrospinal fluid and the diagnostic use of neurological autoantibodies. Finally, neurogenetics, neuropsychological assessment and the assessment of treatments by randomized trials are discussed.

APA, Harvard, Vancouver, ISO, and other styles

7

Close, Frank. 8. Applied nuclear physics. Oxford University Press, 2015. http://dx.doi.org/10.1093/actrade/9780198718635.003.0008.

Full text

Abstract:

Nuclear physics is a rich and active field. The large amounts of latent energy within the nuclei of atoms can be liberated in nuclear reactors. Together with nuclear weapons, this is the most familiar application of nuclear physics, but ‘Applied nuclear physics’ provides a summary of other applications to industry, medical science, and human health. The phenomenon of natural radioactivity provides beams of particles, which may be used to initiate other nuclear reactions, or to attack tumours in cancer treatment. Forensics via induced radioactivity, nuclear magnetic resonance imaging (NMRI), and positron emission tomography (PET) scans are also described.

APA, Harvard, Vancouver, ISO, and other styles

8

Al-Nahhas, Adil, and Imene Zerizer. Nuclear medicine. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0070.

Full text

Abstract:

The application of nuclear medicine techniques in the diagnosis and management of rheumatological conditions relies on its ability to detect physiological and pathological changes in vivo, usually at an earlier stage compared to structural changes visualized on conventional imaging. These techniques are based on the in-vivo administration of a gamma-emitting radionuclide whose distribution can be monitored externally using a gamma camera. To guide a radionuclide to the area of interest, it is usually bound to a chemical label to form a 'radiopharmaceutical'. There are hundreds of radiopharmaceuticals in clinical use with different 'homing' mechanisms, such as 99 mTc HDP for bone scan and 99 mTc MAA for lung scan. Comparing pre- and posttherapy scans can aid in monitoring response to treatment. More recently, positron emission tomography combined with simultaneous computed tomography (PET/CT) has been introduced into clinical practice. This technique provides superb spatial resolution and anatomical localization compared to gamma-camera imaging. The most widely used PET radiopharmaceutical, flurodeoxyglucose (18F-FDG), is a fluorinated glucose analogue, which can detect hypermetabolism and has therefore been used in imaging and monitoring response to treatment of a variety of cancers as well as inflammatory conditions such as vasculitis, myopathy, and arthritides. Other PET radiopharmaceuticals targeting inflammation and activated macrophages are becoming available and could open new frontiers in PET imaging in rheumatology. Nuclear medicine procedures can also be used therapeutically. Beta-emitting radiopharmaceuticals, such as yttrium-90, invoke localized tissue damage at the site of injection and can be used in the treatment of synovitis.

APA, Harvard, Vancouver, ISO, and other styles

9

Gropler, Robert J. Imaging of Myocardial Metabolism. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199392094.003.0025.

Full text

Abstract:

Abnormalities in myocardial substrate metabolism play a key role in the pathogenesis of a host of cardiac disease processes. The importance is highlighted by the routine clinical use of positron emission tomography (PET) using 18F-fluorodeoxyglucose (FDG) to measure myocardial glucose metabolism to detect viable tissue in patients with ischemic cardiomyopathy and the development of novel therapies designed to modulate myocardial metabolism. Our understanding of myocardial metabolism has benefitted from the application of advanced molecular biologic techniques and the development of elegant genetic models to of myocardial metabolic disease resulting in a greater appreciation for the pleiotropic actions of cellular metabolism. In parallel, there have been significant advances in radionuclide-based metabolic imaging techniques in terms instrumentation design, radiopharmaceutical development and small animal imaging. These advances have further ensconced radionuclide metabolic imaging techniques as tools to further our understanding of various forms of cardiovascular disease and potentially improve the care of the cardiac patient. In this chapter several of key advances in metabolic imaging will be described, their potential new clinical applications are reviewed and contribution to cardiovascular research highlighted.

APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Geant4 application for emission tomography"

1

Pradhan, P. K., and Raveena Mubalsha. "Application of PET–CT in Genitourinary Malignancies." In Positron Emission Tomography, 123–36. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2098-5_14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Das, Birendra Kishore. "Application of PET in Cancer of the Breast." In Positron Emission Tomography, 83–90. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2098-5_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Das, Birendra Kishore. "Application of PET in Cancer of the Endocrine Organs." In Positron Emission Tomography, 137–41. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2098-5_15.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Das, Birendra Kishore. "Application of PET (PET-CT) in Radiation Therapy Planning." In Positron Emission Tomography, 169–74. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2098-5_18.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Mittal, B. R., Rahul Parghane, and J. Mohan Roop. "Application of PET and PET-CT in Cancer of the Gastrointestinal System." In Positron Emission Tomography, 113–22. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2098-5_13.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Freund, H. J. "Application of Pet in Clinical Brain Research." In Clinical efficacy of positron emission tomography, 119–22. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3345-3_11.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Lösse, B. "Application of PET to the Study of Heart Disease." In Clinical efficacy of positron emission tomography, 297–98. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3345-3_30.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Maseri, A. "Application of Positron Emission Tomography to the Study of Ischemic Heart Disease." In Clinical efficacy of positron emission tomography, 239–41. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3345-3_23.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Steinert, Hans C. "Clinical Application of Whole-Body [18F]-FDG-PET in Malignant Melanoma." In Positron Emission Tomography: A Critical Assessment of Recent Trends, 213–22. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4996-9_17.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Trón, L., Sz Szakáll, G. Veress, F. Németh, and L. Galuska. "Cavinton Affects the Kinetic Constants of FDG Accumulation: An Application of Registration and Kinetic Modelling." In Positron Emission Tomography: A Critical Assessment of Recent Trends, 163–72. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-4996-9_13.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Geant4 application for emission tomography"

1

COLLOT, J., S. JAN, M. L. GALLIN-MARTEL, P. MARTIN, and E. TOURNEFIER. "A SIMULATION FRAMEWORK FOR POSITRON EMISSION TOMOGRAPHY BASED ON GEANT4." In Proceedings of the Tenth International Conference. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812704894_0030.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Kapadia, Anuj J., Brian P. Harrawood, and Georgia D. Tourassi. "Validation of a GEANT4 simulation of neutron stimulated emission computed tomography." In Medical Imaging, edited by Jiang Hsieh and Ehsan Samei. SPIE, 2008. http://dx.doi.org/10.1117/12.773196.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Gottlich, Martin, Erika Garutti, Valentin Kozlov, Hans-Christian Schultz-Coulon, Alexander Tadday, and Adel Terkulov. "Application of Multi-Pixel Photon Counter to positron emission tomography." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4775014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Xu, Hesong, Matteo Perenzoni, Nicola Massari, and David Stoppa. "A CMOS analog SiPM front-end for positron emission tomography application." In 2015 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2015. http://dx.doi.org/10.1109/iscas.2015.7168962.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Tadday, Alexander, Martin Göttlich, Erika GARUTTI, and H. C. Schultz Coulon. "Application of Silicon Photomultipliers to calorimetry and to Positron Emission Tomography." In International Workshop on New Photon Detectors. Trieste, Italy: Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.090.0009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Hogoev, E. A., and E. A. Hogoev. "Application of seismic emission tomography for study of geodynamically active zones." In Third Passive Seismic Workshop - Actively Passive 2011. Netherlands: EAGE Publications BV, 2011. http://dx.doi.org/10.3997/2214-4609.20145332.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Stankiewicz, Maciek, Ron Gibson, Andy Buffler, Ronald Dusterhoft, Marko Maucec, Michael van Heerden, and Richard Rickman. "Dynamic Positron Emission Tomography: Application to Imaging Fluid Mobility in Fractured Cores." In SPE Unconventional Resources Conference and Exhibition-Asia Pacific. Society of Petroleum Engineers, 2013. http://dx.doi.org/10.2118/167004-ms.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

"Comparison of digital and analog silicon photomultiplier for positron emission tomography application." In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC). IEEE, 2013. http://dx.doi.org/10.1109/nssmic.2013.6829585.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Koutsantonis, L., C. N. Papanicolas, A. N. Rapsomanikis, and E. Stiliaris. "AMIAS: A novel statistical method for tomographic image reconstruction — application in thermal emission tomography." In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD). IEEE, 2016. http://dx.doi.org/10.1109/nssmic.2016.8069512.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Lai, Wen-Cheng. "SAR ADC with DAC and SC Low-Pass Filter for Positron Emission Tomography Application." In 2018 IEEE 18th International Conference on Bioinformatics and Bioengineering (BIBE). IEEE, 2018. http://dx.doi.org/10.1109/bibe.2018.00024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Geant4 application for emission tomography"

1

Nunez, J., and J. Llacer. Bayesian image reconstruction: Application to emission tomography. Office of Scientific and Technical Information (OSTI), February 1989. http://dx.doi.org/10.2172/6609701.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Karagoz, Muge. Design and Construction of a Positron Emission Tomography (PET) Unit and Medical Applications with GEANT Detector Simulation Package. Office of Scientific and Technical Information (OSTI), January 1998. http://dx.doi.org/10.2172/1347951.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!