Log in

Relevant bibliographies by topics / Radiosurgery / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Radiosurgery.

Dissertations / Theses on the topic 'Radiosurgery'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Radiosurgery.'

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.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Yun, Michael Jino. "Radiosurgery for Malignant Brain Tumors." VCU Scholars Compass, 1994. http://scholarscompass.vcu.edu/etd/5088.

Full text

Abstract:

Radiosurgery using the Linear Accelerator or the Gamma Knife has proven to be an effective treatment modality for malignant brain tumors. In comparison to other treatments, radiosurgery can be performed on an outpatient basis and is noninvasive (Table 5). Due to the functional properties of radiosurgical devices, they are ideal for patients who are unable to undergo surgical removal of their brain tumors. The sharp dose drop—off beyond the tumor margin allows for high dosage tumor irradiation while sparing normal brain tissue. Many procedures that involve radiosurgery use it as a ”boost” thera

APA, Harvard, Vancouver, ISO, and other styles

2

Dubé, Frédéric. "Spiral irradiation in stereotactic radiosurgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0016/MQ55049.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Dubé, Frédéric 1973. "Spiral irradiation in stereotactic radiosurgery." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29884.

Full text

Abstract:

The aim of stereotactic radiosurgery is to deliver a high and uniform radiation dose to the target volume and a minimized dose to the surrounding healthy tissue. Various linac-based radiosurgical techniques are used clinically: multiple non-coplanar converging arcs, dynamic arc rotation, and conical rotation. The techniques differ in their beam distribution over the patient's head.<br>A study of the beam distribution characteristics for the clinical linac-based radiosurgical techniques is presented. Two spiral linac-based radiosurgical techniques are developed: the uniform dose-rate spiral irr

APA, Harvard, Vancouver, ISO, and other styles

4

Bourque, Daniel. "Static conformal fields in stereotactic radiosurgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37097.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Schlaefer, Alexander. "Computer assisted planning for robotic radiosurgery." Berlin Logos-Verl, 2007. http://d-nb.info/988177684/04.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Hu, Xiaoliang. "A New Gamma Knife Radiosurgery Paradigm: Tomosurgery." online version, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=case1170292131.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Chua, T. T. Daniel. "Stereotactic radiosurgery as salvage treatment for locally recurrent nasopharyngeal carcinoma." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37223513.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Otto, Karl. "3-dimensional anatomy-based verification in stereotactic radiosurgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0014/MQ37154.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Auld, Lindsay. "Treatment dose verification in stereotactic radiosurgery quality assurance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0015/MQ45883.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Otto, Karl 1972. "3-dimensional anatomy-based verification in stereotactic radiosurgery." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27895.

Full text

Abstract:

An on-line beam to target portal verification technique has been developed for stereotactic radiosurgery. Conventional radiosurgery employs a stereotactic frame in order to obtain sufficient spatial accuracy in dose delivery. Frame based verification methods attempt to ensure accurate target positioning with respect to the frame but they do not account for possible movement of the frame with respect to the anatomy and isocenter. We account for this possibility by superimposing digitally reconstructed radiographs (DRRs) over orthogonal edge detected digital portal image pairs. By developing a p

APA, Harvard, Vancouver, ISO, and other styles

11

Sixel, Katharina E. (Katharina Elisabeth). "Physical parameters of narrow photon beams in radiosurgery." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59890.

Full text

Abstract:

Radiosurgery is a radiation treatment modality in which a high radiation dose (few 1000 cGy) is given to a small volume (few cm$ sp3$) within the patient's brain during a single treatment. The main physical characteristics of radiosurgery are narrow circular radiation beams, stringent requirements on the numerical ($ pm$2%) and spatial ($ pm$1 mm) accuracy of dose delivery to the target and the need for sharp dose fall-offs outside the target volume.<br>Physical aspects of radiosurgery based on isocentric linear accelerators (linacs) are presented. The equipment and techniques used in the meas

APA, Harvard, Vancouver, ISO, and other styles

12

Oliveira, Silvana C. "Comparison of three linac-based stereotactic radiosurgery techniques." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=19455.

Full text

Abstract:

In this thesis, physical and biological aspects of three linear-accelerator-based stereotactic radiosurgery techniques, namely the dynamic rotation, static conformal beam, and intensity-modulated beam, are compared. Comparisons are carried out using simulated targets which include spheres, hemispheres and a C-shaped target wrapped around a critical structure, inserted within modified slabs of an Alderson Rando anthropomorphic phantom. The phantom is CT-scanned with a stereotactic frame, and the images are transferred to the treatment planning systems. The best possible treatment plans are gene

APA, Harvard, Vancouver, ISO, and other styles

13

Narayanan, Sridar 1966. "Image analysis for the assessment of stereotactic radiosurgery." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68229.

Full text

Abstract:

This thesis describes an image-based system for analyzing dose distributions produced during treatment planning of stereotactic radiosurgery. A review of stereotaxy and radiosurgery, particularly for the treatment of arteriovenous malformations (AVMs), is presented. The stereotactic apparatus and linear accelerator-based irradiation techniques used at McGill University are described in some detail.<br>The image-dose analysis software, running on a UNIX workstation, is presented, including software utilities for the evaluation of radiosurgery treatment plans based on magnetic resonance (MR) ima

APA, Harvard, Vancouver, ISO, and other styles

14

Bercier, Yanic. "Image fusion for radiosurgery treatments of arteriovenous malformations." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82830.

Full text

Abstract:

An interactive 3D target localisation and delineation tool has been developed for radiosurgery planning of arteriovenous malformations (AVMs). With this system, magnetic resonance (MR), MR angiography (MRA) and computed tomography (CT) volumes can be fused in stereotactic space. Stereotactic angiography (SA) images can be linked to the MRA volume by recovering the SA acquisition geometry. The MRA and SA images can be correlated (1) by ray-tracing through the MRA volume with the recovered SA acquisition geometry and overlaying the images onto the SA images and (2) by localising the AVM o

APA, Harvard, Vancouver, ISO, and other styles

15

Tozer-Loft, Stephen M. "Dose volume analysis in brachytherapy and stereotactic radiosurgery." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366100.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Ashfaq, Awais. "Segmentation of Cone Beam CT in Stereotactic Radiosurgery." Thesis, KTH, Skolan för teknik och hälsa (STH), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-193107.

Full text

Abstract:

C-arm Cone Beam CT (CBCT) systems – due to compact size, flexible geometry and low radiation exposure – inaugurated the era of on-board 3D image guidance in therapeutic and surgical procedures. Leksell Gamma Knife Icon by Elekta introduced an integrated CBCT system to determine patient position prior to surgical session, thus advancing to a paradigm shift in facilitating frameless stereotactic radiosurgeries. While CBCT offers a quick imaging facility with high spatial accuracy, the quantitative values tend to be distorted due to various physics based artifacts such as scatter, beam hardening

APA, Harvard, Vancouver, ISO, and other styles

17

Sandström, Helena. "Contouring variability in radiosurgery - dosimetric and radiobiological implications." Licentiate thesis, Stockholms universitet, Fysikum, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-123252.

Full text

Abstract:

The use of Stereotactic Radiation Therapy (SRT) employing one large fraction of radiation, as in stereotactic radiosurgery (SRS), or few fractions of high doses, has continuously increased due to the technical development and the progress in dose delivery complemented by the positive clinical experience. The success of stereotactic radiation therapy depends on many clinical, dosimetric and radiobiological factors. For SRS in particular, the delivery of a highly conformal dose distribution to the target in one fraction allowing at the same time the sparing of the normal tissue and the critical

APA, Harvard, Vancouver, ISO, and other styles

18

Andisheh, Bahram. "Improving the therapeutic ratio of stereotactic radiosurgery and radiotherapy." Doctoral thesis, Stockholms universitet, Fysikum, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-81079.

Full text

Abstract:

New methods of high dose delivery, such as intensity modulated radiation therapy (IMRT), stereotactic radiation therapy (SRT) or stereotactic radiosurgery (SRS), hadron therapy, tomotherapy, etc., all make use of a few large fractions. To improve these treatments, there are three main directions: (i) improving physical dose distribution, (ii) optimizing radiosurgery dose-time scheme and (iii) modifying dose response of tumors or normal tissues. Different radiation modalities and systems have been developed to deliver the best possible physical dose to the target while keeping radiation to norm

APA, Harvard, Vancouver, ISO, and other styles

19

Charpentier, Pierre E. "Dosimetric evaluation of four techniques used in stereotactic radiosurgery." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112386.

Full text

Abstract:

The thesis presents a comparison of four techniques used for stereotactic radiosurgery, consisting of the static conformal beam, static cone-based, proton therapy, and the Gamma Knife techniques. The comparisons involved six test cases in which phantom target lesions were created in the center of the modified anthropomorphic RandoRTM head. The phantom lesions presented in the study were extreme irregular cases that ranged in shape and volume and were near a critical structure to receive minimal dose during treatment planning. The best treatment plans from each technique for all studies were se

APA, Harvard, Vancouver, ISO, and other styles

20

Dimitriadis, Alexis. "Assessing the dosimetric and geometric accuracy of stereotactic radiosurgery." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/813888/.

Full text

Abstract:

Stereotactic radiosurgery (SRS) is a non-invasive treatment predominantly used for the management of malignant and benign brain tumours. The treatment can be delivered by various platforms in a single fraction where a high dose of radiation is delivered to the target whilst the surrounding healthy tissue is spared. This requires a high degree of accuracy in terms of the dose level delivered but also in terms of geometric precision. The purpose of this work was to identify the variations of SRS practice in the UK and develop a novel method compatible with all practices, capable of assessing the

APA, Harvard, Vancouver, ISO, and other styles

21

Jitprapaikulsarn, Suradet. "An Optimization-Based Treatment Planner for Gamma Knife Radiosurgery." Case Western Reserve University School of Graduate Studies / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=case1109959500.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Shihadeh, Fadi Easa. "Optimized and integrated alignment system for functional proton radiosurgery." CSUSB ScholarWorks, 2007. https://scholarworks.lib.csusb.edu/etd-project/3258.

Full text

Abstract:

In this thesis work, a system for proton beam alignment was studied and optimized in many of its functional areas. The resulting system was named Positioning Alignment Control System (PACS). The PACS system is an integrated and efficient system as a result of the work done on it in the course of this thesis work.

APA, Harvard, Vancouver, ISO, and other styles

23

Wenner, Lisa Ellen. "Using regression techniques for the automated selection of radiosurgery plans." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/13706.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Fox, Timothy Harold. "Computation and optimization of dose distributions for rotational stereotactic radiosurgery." Diss., Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/32843.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Hössjer, Simon. "3D/2D Image Registration for Patient Positioning in Stereotactic Radiosurgery." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170639.

Full text

Abstract:

In the application of stereotactic radiosurgery for treatment of brain tumors it is imperative that patients are positioned with sub-millimetre accuracy so as to not damage surrounding healthy tissue during treatment. We investigate how feasible the technique of digitally reconstructed radiographs is as a registration method for patient positioning in this type of high-accuracy application. In particular, since most registration methods based on said technique only rely on two simultaneous projection angles seldom reaching high enough accuracy, we consider any arbitrary amount and observe its

APA, Harvard, Vancouver, ISO, and other styles

26

Chua, T. T. Daniel, and 蔡清淟. "Stereotactic radiosurgery as salvage treatment for locally recurrent nasopharyngeal carcinoma." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37223513.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Josefsson, Marcus. "Robust Optimization for Radiosurgery under the Static Dose Cloud Approximation." Thesis, KTH, Optimeringslära och systemteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-156415.

Full text

Abstract:

This report investigates methods of optimization to make treatment plans in radiosurgery robust to spatial uncertainty, and attempts to determine whether they could be used with bene t in a Gamma Knife context. To make the problem mathematically feasible, regions of interest (ROIs) are approximated to move in a pre-computed static dose cloud, which in turn is estimated by methods of linear interpolation and linear approximation. The movements of ROIs are modeled by transforms, of which rigid, general affine, and a special case of non-affine transforms are treated. Of these, the rigid transform

APA, Harvard, Vancouver, ISO, and other styles

28

Alexander, Dana J. "Dose accuracy of the CMS convolution algorithm for stereotactic radiosurgery." Diss., Online access via UMI:, 2009.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

29

Malkoc, Veysi. "Sequential alignment and position verification system for functional proton radiosurgery." CSUSB ScholarWorks, 2004. https://scholarworks.lib.csusb.edu/etd-project/2535.

Full text

Abstract:

The purpose of this project is to improve the existing version of the Sequential Alignment and Position Verification System (SAPVS) for functional proton radiosurgery and to evaluate its performance after improvement .

APA, Harvard, Vancouver, ISO, and other styles

30

Poffenbarger, Brett A. "Viability of an isocentric cobalt-60 teletherapy unit for stereotactic radiosurgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0007/MQ44248.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Sixel, Katharina E. (Katharina Elisabeth). "Measurements and Monte Carlo simulations of X-ray beams in radiosurgery." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41242.

Full text

Abstract:

Radiosurgery is characterized by high radiation doses, delivered via small diameter radiation beams in a single session, placing stringent requirements on the numerical and spatial accuracy of dose delivery to the target volume within the brain. In this thesis, physical and clinical aspects of radiosurgery are discussed, including a method for the production of cylindrical dose distributions with rectangular beams using cylindrical dynamic rotation.<br>The measurements of radiosurgical x-ray beam parameters are presented. Monte Carlo simulations determine that a measured increase depth of dose

APA, Harvard, Vancouver, ISO, and other styles

32

Thakur, Varun. "Planning and delivery comparison of six Linac-based stereotactic radiosurgery techniques." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=107888.

Full text

Abstract:

This work presents planning and delivery comparison of linac-based SRS treatment techniques currently available for single lesion cranial SRS. In total, two dedicated SRS systems (Novalis Tx, Cyberknife) and a HI-ART TomoTherapy system with six different delivery techniques are evaluated. Four delivery techniques are evaluated on a Novalis Tx system: circular cones, dynamic conformal arcs (DCA), static non-coplanar intensity modulated radiotherapy (NCP-IMRT), and volumetric modulated arc therapy (RapidArc) techniques are compared with intensity modulation based helical Tomotherapy on the HI-

APA, Harvard, Vancouver, ISO, and other styles

33

Rojas, Villabona Alvaro Alexander. "Optimisation of planning and delivery methods for Gamma Knife Stereotactic Radiosurgery." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10048270/.

Full text

Abstract:

The work presented in this dissertation is the response to a series of technical and clinical challenges encountered during the first four years of operations in the Gamma Knife Centre at Queen Square. These challenges, which are common to most contemporary Gamma Knife centres, were prospectively addressed and practical solutions were developed for the questions they posed. The dosimetric differences between the new convolution algorithm and the standard TMR 10 algorithm traditionally used for prediction of dose distribution in Gamma Knife Radiosurgery (GKR) were explored. It was demonstrated

APA, Harvard, Vancouver, ISO, and other styles

34

Cadman, Patrick F. (Patrick Frank). "Target localization and treatment set-up verification in linear accelerator-based radiosurgery." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61344.

Full text

Abstract:

The stringent demands for accuracy in radiosurgery impinge on all aspects of the radiosurgical procedure. A computer program, used to determine target coordinates from planar stereotactic image pairs, has been developed. Digital subtraction angiography images, obtained with a localizer attachment affixed to the stereotactic frame, are analyzed with the program for the localization of certain malformations. During treatment set-up verification, the center of the radiation distribution is determined using portal linear accelerator images of the collimated radiosurgery beam, with the patient in t

APA, Harvard, Vancouver, ISO, and other styles

35

Gianolini, Stefano. "Comparative treatment planning and dosimetry for stereotatic radiosurgery: Gamma knife versus adapted LINAC /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16814.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Robar, James L. "Film dosimetry and three-dimensional verification of conformal dose distributions in stereotactic radiosurgery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/NQ48701.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Bercier, Yanic. "A multimodality image fusion and localisation system for radiosurgery treatments of arteriovenous malformations /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33379.

Full text

Abstract:

A multimodality image fusion and localisation system for radiosurgery treatments of arteriovenous malformations (AVM) has been developed and validated. Within this system, three-dimensional magnetic resonance angiography (MRA) and two-dimensional digital subtraction angiography (DSA) vasculature information is combined with three-dimensional magnetic resonance (MR) and/or computed tomography (CT) anatomical information in order to benefit from the functionality of all modalities. MRA/MR/CT datasets are fused, and linked to the DSA images. The consistency of the linking procedure is verified by

APA, Harvard, Vancouver, ISO, and other styles

38

Gavriliouk, Elena O. [Verfasser]. "Unequal Sphere Packing Problem in the Context of Stereotactic Radiosurgery / Elena O Gavriliouk." Aachen : Shaker, 2007. http://d-nb.info/1170527167/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Svensson, Jenni. "Multiobjective optimization in radiosurgery : How to approximate and navigate on the Pareto surface." Thesis, KTH, Optimeringslära och systemteori, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145133.

Full text

Abstract:

Cancer is a common cause of death worldwide and radiotherapy is one of the treatments used. Since treatment planning is a time consuming matter for the radiation therapist, a way to decrease the time spent finding the plan would be an improvement. This can be achieved by precalculating a number of optimal plans and then choosing among these in real-time. In this thesis a dual algorithm for approximation of the Pareto optimal plans suggested by Bokrantz and Forsgren, was adapted to the parameters of the Leksell Gamma Knife®. A Graphical User Interface was also created, based on the navigation t

APA, Harvard, Vancouver, ISO, and other styles

40

Courter, Erik Joseph-Leonard. "Use of ClearView Gel Dosimeter for Quality Assurance and Testing of Stereotactic Radiosurgery." Wright State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=wright1466417256.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Neupane, Mahesh Raj. "Optimization of a sequential alignment verification and positioning system (SAVPS) for proton radiosurgery." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2784.

Full text

Abstract:

Functional proton-beam stereotactic radiosurgery requires sub-millimeter alignment accuracy. A patient tracking system called Sequential Alignment and Position Verification System (SAVPS) is under development at Loma Linda University Medical Center. An optical positioning system (OPS), manufactured by Vicon Peak, has been chosen to verify the correct alignment of the target with the proton beam axis. The main objective of this thesis is to optimize an existing version of SAVPS by conducting error analysis. An image processing algorithm was developed and applied to estimate the error introduced

APA, Harvard, Vancouver, ISO, and other styles

42

Tze, Mei-yu Jadie. "Is waiting time a quality service indicator for radiotherapy treatment? : the effect of waiting time on local tumour control for nasopharyngeal carcinoma patients in Hong Kong /." View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36887328.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Massager, Nicolas. "Influence de la distribution de dose d'irradiation dans la variation de l'effet radiobiologique du traitement radiochirurgical par Gamma Knife." Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210380.

Full text

Abstract:

La radiochirurgie par Gamma Knife constitue une modalité thérapeutique reconnue de certaines affections cérébrales. Le traitement se base sur l’administration d’un rayonnement focalisé au niveau d’une cible intracrânienne. L’efficacité de ce traitement repose sur la délivrance d’une dose d’irradiation efficace au sein d’un volume-cible associé à la délivrance d’une dose d’irradiation négligeable à l’extérieur de ce même volume-cible. En pratique, la dose d’irradiation administrée à l’intérieur du volume-cible n’est pas distribuée de manière homogène, et la dose d’irradiation reçue par les tiss

APA, Harvard, Vancouver, ISO, and other styles

44

TAKAHASHI, HIROSHI, CHISA HASHIZUME, TAKAHIKO TSUGAWA, YOSHIMASA MORI, and TATSUYA KOBAYASHI. "PROGNOSTIC FACTORS FOR TUMOR RECURRENCE AFTER GAMMA KNIFE RADIOSURGERY OF PARTIALLY RESECTED AND RECURRENT CRANIOPHARYNGIOMAS." Nagoya University School of Medicine, 2012. http://hdl.handle.net/2237/16031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Milroy, Desmond. "Validation of a commercial Monte Carlo algorithm for stereotactic radiosurgery and stereotactic body radiation therapy." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110472.

Full text

Abstract:

This thesis aimed to validate the Monte Carlo (MC) algorithm in BrainLab's iPlan treatment planning system, used in conjunction with stereotactic radiosurgery (SRS) mode of the Varian Novalis TX linear accelerator for clinical use. Specifically, the iPlan algorithm was "benchmarked" by comparing results obtained with a BEAMnrc model developed for the Novalis TX's SRS mode. The BEAMnrc model was obtained by modifying an existing model for a Varian linac to include the different SRS flattening filter and the high definition 120 leaf multi-leaf collimator (HD120 MLC) of the Novalis TX. Charact

APA, Harvard, Vancouver, ISO, and other styles

46

Morales, Johnny Estuardo. "Advances in very small x-ray field dosimetry for circular cones used in stereotactic radiosurgery." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/133137/1/Johnny_Morales_Thesis.pdf.

Full text

Abstract:

This project presents recent advances in small field dosimetry for radiosurgery treatments with Brainlab circular cones using 6 MV x-rays. The specific advances included: the use of a new microDiamond detector, the use of radiochromic film and OSLD detectors with an extrapolation technique, skin dose measurements and Monte Carlo simulation of radiosurgery treatments. There is limited published data on the output factor for the 4 mm circular cone. This thesis provides methodology and guidelines on how to perform such difficult measurements.

APA, Harvard, Vancouver, ISO, and other styles

47

HASHIZUME, CHISA, TATSUYA KOBAYASHI, YUTA SHIBAMOTO, et al. "Useful Base Plate to Support the Head During Leksell Skull Frame Placement in Gamma Knife Perfexion Radiosurgery." Nagoya University School of Medicine, 2014. http://hdl.handle.net/2237/19481.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Toreti, Dalila Luzia. "Aceite, comissionamento e controle de qualidade em radiocirurgia." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-23092011-155440/.

Full text

Abstract:

A Radiocirurgia Estereotática é a técnica de tratamento que usa feixes estreitos de radiação focalizados com grande exatidão em uma lesão pequena. A introdução dos colimadores micro multi-lâminas (mMLC) permite que essa técnica alcance um maior grau de conformação de dose na lesão alvo, possibilitando uma menor irradiação das estruturas críticas e dos tecidos normais. Este trabalho visa apresentar os resultados dos testes de aceite e do comissionamento de um acelerador linear Varian ® 6EX dedicado à Radiocirurgia, associado com o colimador multi-lâminas da BrainLab ® instalado no Hospital das

APA, Harvard, Vancouver, ISO, and other styles

49

Winnenburg, Holger. "Qualitätssicherung in der Strahlentherapie spezifische Untersuchungen zur langzeitlichen Konstanz dosimetrischer und geometrischer Parameter beim Einsatz von Radiosurgery-Software /." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970184905.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

antonio, santacroce Verfasser], Hans-Jakob [Gutachter] [Steiger, and Jörg [Gutachter] Schipper. "The role of radiosurgery for the management of benign intracranial meningiomas / santacroce antonio ; Gutachter: Hans-Jakob Steiger, Jörg Schipper." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/1149895683/34.

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!