EP-1603 IMAGE GUIDED RADIOTHERAPY USING INTRA-PROSTATIC GOLD FIDUCIAL MARKERS AND MEGAVOLTAGE ELECTRONIC PORTAL IMAGING

2012 ◽  
Vol 103 ◽  
pp. S614-S615
Author(s):  
A. O'Neill ◽  
D. Irvine ◽  
M. Wilkinson ◽  
M. Gillen ◽  
P. Keane ◽  
...  
Keyword(s):  
Fiducial Markers ◽  
Portal Imaging ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Electronic Portal Imaging

An evaluation of ultrasound localisation for verification of external beam radiotherapy to the prostate

2006 ◽  
Vol 5 (2) ◽  
pp. 109-116
Author(s):  
J. Richards
Keyword(s):  
External Beam Radiotherapy ◽  
Three Dimensional ◽  
Intensity Modulated Radiotherapy ◽  
Invasive Technique ◽  
Portal Imaging ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Electronic Portal Imaging ◽  
Physiological Processes ◽  
Accurate Treatment

The recent advent of highly conformal three-dimensional radiotherapy techniques and Intensity Modulated Radiotherapy now allows higher radiation doses to be delivered. It is well-documented that the prostate is susceptible to both interfraction and intrafraction movements due to various physiological processes. Therefore there has been a recent general consensus that good immobilisation and electronic portal imaging is no longer sufficient to ensure accurate treatment verification. This idea has led to the concept of image-guided radiotherapy, which includes modalities such as cone-beam computed tomography and ultrasound to localise the prostate prior to treatment.There has been considerable research undertaken to determine the effectiveness of each of the image guided modalities and these studies have identified the benefit and limitations of each modality. Ultrasound is a non-invasive technique using a suprapubic ultrasound probe, which seems to be quite promising in terms of cost and time. However until large scales studies are performed which demonstrate the value of using ultrasound localisation, as an alternative to electronic portal imaging, it is likely that current practice will remain unchanged.

scholarly journals Radioterapia Guiada por Imagem: Técnicas e Controle de Qualidade

2019 ◽  
Vol 13 (1) ◽  
pp. 99
Author(s):  
Leandro Rodrigues Fairbanks ◽  
Laura Furnari
Keyword(s):  
Cone Beam ◽  
Portal Imaging ◽  
Image Guided Radiotherapy ◽  
Image Guided ◽  
Electronic Portal Imaging

A radioterapia é uma modalidade de tratamento em constante evolução que procura atingir o seguinte objetivo: irradiar, com precisão cada vez maior, o alvo, poupando ao máximo as estruturas vizinhas. Para alcançar esse objetivo em tratamentos complexos como radioterapia de intensidade modulada (IMRT), radiocirurgia estereotática (SRS) e radioterapia estereotática de corpo (SBRT), surgiu a radioterapia guiada por imagem (image guided radiotherapy — IGRT). Neste artigo, são descritos os princípios de funcionamento e as características dos seguintes principais dispositivos utilizados: Electronic portal imaging, Cone beam, ExacTrac e Calypso. Como todo o sistema que executa procedimentos que envolvem pacientes, os dispositivos de IGRT também precisam ser submetidos a testes de controle de qualidade que garantam a segurança dos pacientes e a precisão dos tratamentos. Para os diferentes dispositivos apresentamos testes com foco na geometria, na qualidade da imagem, no sistema de operação e na segurança. Também são apresentadas a frequência recomendada e a tolerância aceitável.

scholarly journals MRI visibility of gold fiducial markers for image-guided radiotherapy of rectal cancer

2019 ◽  
Vol 132 ◽  
pp. 93-99 ◽  
Author(s):  
Roy P.J. van den Ende ◽  
Lisanne S. Rigter ◽  
Ellen M. Kerkhof ◽  
Els L. van Persijn van Meerten ◽  
Eva C. Rijkmans ◽  
...  
Keyword(s):  
Rectal Cancer ◽  
Fiducial Markers ◽  
Image Guided Radiotherapy ◽  
Image Guided

scholarly journals Evaluation of different fiducial markers for image-guided radiotherapy and particle therapy

2013 ◽  
Vol 54 (suppl 1) ◽  
pp. i61-i68 ◽  
Author(s):  
D. Habermehl ◽  
K. Henkner ◽  
S. Ecker ◽  
O. Jakel ◽  
J. Debus ◽  
...  
Keyword(s):  
Particle Therapy ◽  
Fiducial Markers ◽  
Image Guided Radiotherapy ◽  
Image Guided
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