Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 34 for “"vmat"”.
-
Δημιουργία, εκπαίδευση και εφαρμογή knowledge based planning (KBP) μοντέλων σε VMAT πλάνα ακτινοθεραπείας
… τέσσερα μοντέλα Knowledge-Based Planning (KBP) VMAT πλάνων ακτινοθεραπείας πνεύμονα, διερευνώντας διαφορετικές στρατηγικές εκπαίδευσης ως προς τη διαχείριση outliers και τον αλγόριθμο υπολογισμού δόσης. Σκοπός: Η διερεύνηση της προβλεπτικής ικανότητας των μοντέλων σε νέα περιστατικά και η …
-
A Dosimetric Study of a VMAT Head and Neck Treatment Plan Using TLDs and Gafchromic Films
<p>VMAT therapy considered as one of the new techniques for treating cancer patients. This smart arc therapy decreases the treatment time, which decreases the patient motion and the internal motion of the tumor. This thesis came to study the accuracy of this kind of treatment in heterogenetic …
-
Volumetric Modulated Arc Therapy Evaluation With The Radiological Physics Center Head and Neck Phantom
… including volumetric modulated arc therapy (VMAT). VMAT delivers intensity modulated radiotherapy treatments while simultaneously rotating the gantry, adding an additional level of complexity to both the dose calculation and delivery of VMAT treatments compared to static gantry IMRT. The …
-
Construction of a model for the improved planning of MCO-informed VMAT in RayStation using a knowledge base of clinical IMRT-MCO treatment plans
… therapy type, Volumetric Modulated Arc Therapy (VMAT), has the potential to provide comparable dose coverage to tumor sites while better sparing nearby organs at risk (OARs). Multi-criteria Optimization (MCO) is an algorithm that is used to optimize a patient's personalized IMRT treatment plan. …
-
Volumetric modulated Arc Therapy versus 3D conformal radiotherapy in the treatment of locally advanced cervical cancer. A single institution, comparative dosimetric study
… advanced cervical cancer (LACC). Generally, VMAT is thought to achieve higher conformity to the Planned Target Volume (PTV) and better sparing of organs at risk (OAR) when compared to 3D-CRT. This study focused on these principles as it applied to treatment and potential toxicity in the …
-
Characterization of Vesicular Monoamine Transporter 2 and Its Role In Parkinson'S Disease Pathogenesis Using Drosophila
… loss in PD. Vesicular Monoamine Transporter (VMAT) is essential for proper vesicular storage of monoamines such as DA and their regulated release. Increasing evidence have linked VMAT dysfunction with Parkinson’s disease. In this study, we re-examine the gain- and loss-of-function phenotypes …
-
Modelling Uncertainties in Radiation Therapy: The Clinical Impact on Prostate Bed Treatment
… techniques in radiotherapy, including IMRT and VMAT offer methods to deliver highly conformal dose distributions to the target while sparing dose to organs at risk. However, these techniques are highly complex and therefore raise the potential for errors in radiotherapy planning and delivery. …
-
Treatment Planning Automation For Rectal Cancer Radiotherapy
… common existing treatment techniques, 3DCRT and VMAT, for rectal cancers, and then explored an alternative method for creating a treatment plan using deep learning. </p> <h2>Methods:</h2> <p>To automate the 3DCRT treatment technique, we used deep learning to predict the shapes of field apertures …
-
Dosimetric comparison of volumetric modulated arc therapy and three dimensional conformal radiotherapy in the adjuvant setting for the management of gastric cancer : target volume coverage and normal tissue sparing
… and compare volumetric modulated arc therapy (VMAT) and three dimensional conformal radiotherapy (3DCRT) plans in adjuvant radiation of gastric cancer.
-
Risk of Second Malignant Neoplasms Following Proton Arc Therapy and Volumetric Modulated Arc Therapy For Prostate Cancer
… to that after volumetric modulated arc therapy (VMAT). Additionally, we investigated the impact of margin size and the effect of risk-minimized proton beam weighting on predicted <em>RRR</em>.<strong> </strong>Physician-approved treatment plans were created for both modalities for three patients. …
-
Η επίδραση των κλινικών δοκιμών στην εξάλειψη των ανισοτήτων και στην φροντίδα των ασθενών με καρκίνο του πνεύμονα
… (p=0,004). Η ογκομετρική τοξοειδής θεραπεία (VMAT) χορηγήθηκε στο 95% των συμμετεχόντων στη κλινική μελέτη έναντι 74% των μη συμμετεχόντων. Η απουσία VMAT συσχετίστηκε με υψηλότερη πιθανότητα έναρξης θεραπείας πέραν των 60 ημερών από τη διάγνωση (OR 4,6; p= 0,049). Επιπλέον, ένα μεγαλύτερο …
-
I. Advanced Fluorescent False Neurotransmitters for the Study of Monoamine Transporter Activity and Synaptic Transmission
… for the Vesicular Monoamine Transporter 2 (VMAT2) for applications in high throughput screening of VMAT activity and inhibition, as well as for imaging aminergic synaptic transmission in brain tissue. Chapter 3 describes the discovery of fluorescent probes FFN201 and AGH093 as dual …
-
Evaluation of an End-to-End Radiotherapy Treatment Planning Pipeline for Prostate Cancer
… automation of Volumetric Modulated Arc Therapy (VMAT) planning for a breadth of prostate treatment scenarios. Development of VMAT plans for intact, postoperative, and nodal involvement treatment cases was necessary for the sequence in daily treatment delivery and the prospective distribution of …
-
Vliv výběru typu a energie fotonového svazku na ozařovací plán při zevní radioterapii karcinomu děložního hrdla
… using the volumetric modulated arc therapy (VMAT) technique. For every patient, plans were created using photon beam energies of 6 MV and 10 MV, both with and without a flattening filter (FF and FFF). The evaluated parameters included the volume of the body receiving at least 10 % of the …
-
A Multi-DOF Soft Robot Mechanism for Patient Motion Correction and Beam Orientation Selection in Cancer Radiation Therapy
… and 4π-noncoplanar radiation therapy such as VMAT.
-
FUNCTIONAL AND BIOCHEMICAL CONSEQUENCES OF SINGLE NUCLEOTIDE POLYMORPHISMS IN THE HUMAN VESICULAR MONOAMINE TRANSPORTER 1 GENE (SLC18A1) By Sally Gamal Shukry, B.S.
… nucleotide polymorphisms (SNP) in the human VMAT1 gene (SLC18A1) have been associated with schizophrenia in three different populations: Han Chinese, Western European and Japanese. Effects of these mutations on transport function of the hVMAT1 protein have not been reported. The goal of this …
-
Η θέσης της ακτινοθεραπείας στα σύγχρονα πρωτόκολλα νεοεπικουρικής θεραπείας για αδενοκαρκίνωμα της γαστροοισοφαγικής συμβολής
… οι σύγχρονες τεχνικές ακτινοθεραπείας (IMRT, VMAT, IGRT) και οι στρατηγικές διαχείρισης οξείας και όψιμης τοξικότητας, με ιδιαίτερη έμφαση στην ανάγκη τυποποίησης διαδικασιών και πολυεπιστημονικής προσέγγισης. Επιπρόσθετα, η ανασκόπηση εντάσσει τα δεδομένα των τριών πιο σύγχρονων …
Page 1 of 2