نتایج جستجو برای: 3 d conformal radiotherapy

تعداد نتایج: 2281537  

2010
Banu Atalar Enis Ozyar Kaan Gunduz Gorkem Gungor

BACKGROUND External beam radiotherapy (EBRT) for retinoblastoma has traditionally been done with conventional radiotherapy techniques which resulted high doses to the surrounding normal tissues. CASE REPORT A 20 month-old girl with group D bilateral retinoblastoma underwent intensity modulated radiotherapy (IMRT) to both eyes after failing chemoreduction and focal therapies including cryother...

Journal: :Neuro-oncology 2014
N Patrik Brodin Per Munck af Rosenschöld Malin Blomstrand Anne Kiil-Berthlesen Christian Hollensen Ivan R Vogelius Birgitta Lannering Søren M Bentzen Thomas Björk-Eriksson

BACKGROUND We investigated how varying the treatment margin and applying hippocampal sparing and proton therapy impact the risk of neurocognitive impairment in pediatric medulloblastoma patients compared with current standard 3D conformal radiotherapy. METHODS We included 17 pediatric medulloblastoma patients to represent the variability in tumor location relative to the hippocampal region. T...

2013
Valeria Casanova Borca Massimo Pasquino Giuliana Russo Pierangelo Grosso Domenico Cante Piera Sciacero Giuseppe Girelli Maria Rosa La Porta Santi Tofani

Radiochromic film has become an important tool to verify dose distributions in highly conformal radiation therapy such as IMRT. Recently, a new generation of these films, EBT3, has become available. EBT3 has the same composition and thickness of the sensitive layer of the previous EBT2 films, but its symmetric layer configuration allows the user to eliminate side orientation dependence, which i...

Journal: :iranian journal of radiation research 0
b. goswami department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india s. mitra department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india s. banerjee department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india a. shiva b department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india p. nagendran department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india p. kumari department of radiation oncology, apollo gleneagles cancer hospital, kolkata, india

background: identify the optimal technique of radiotherapy for patients with high grade glioma. our initial year of experience with rapidarc radiation therapy. materials and methods: planning ct scans of 50 patients with grade iv glioma were reviewed and three plan sets by 3d conformal radiotherapy (3dcrt), intensity modulated radiotherapy (imrt) and rapid arc (ra) were generated and the plans ...

Journal: :The Journal of Korean Institute of Communications and Information Sciences 2016

Journal: :Physical review letters 2005
Harald P Pfeiffer James W York

The conformal thin-sandwich (CTS) equations are a set of four of the Einstein equations, which generalize the Laplace-Poisson equation of Newton's theory. We examine numerically solutions of the CTS equations describing perturbed Minkowski space, and find only one solution. However, we find two distinct solutions, one even containing a black hole, when the lapse is determined by a fifth ellipti...

Journal: :Malaysian Journal of Science Health & Technology 2023

Cancer, which is the uncontrolled division of cells, a leading fatal disease in world with high mortality rates. It can be treated using several methods, including radiotherapy, involves ionizing radiation. Radiotherapy on basis source placement has two types, i.e. brachytherapy and external beam radiotherapy. External radiotherapy evolved from 2-D conventional therapy to 3-D Conformal (3D-CRT)...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2012
Kang Shen Xin-En Huang Yan-Yan Lu Xue-Yan Wu Jin Liu Jin Xiang

OBJECTIVE This study was designed to investigate treatment efficacy and side effects of concomitant Aisu® (docetaxel) with three-dimensional conformal external beam radiotherapy for the treatment of inoperable patients with esophageal cancer. METHODS Inoperable patients were treated with three-dimensional conformal external beam radiotherapy (5/week, 2 GY/day, and total dose 60GY) plus doceta...

2013
Thomas G. Wendt

Adverse effects and hazards which have their origin from radiation using conventional techniques like 3-D conformal radiotherapy and total radiation doses are well known. However little is known about the sprectum of especially late toxicity after radiation using new technologies like intensity modulated radiotherapy (IMRT) combined with novel target volume and dose concepts. Since IMRT allows ...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2014
Safae Mansouri Asmaa Naim Luis Glaria Hugo Marsiglia

BACKGROUND Breast cancers are becoming more frequently diagnosed at early stages with improved long term outcomes. Late normal tissue complications induced by radiotherapy must be avoided with new breast radiotherapy techniques being developed. The aim of the study was to compare dosimetric parameters of planning target volume (PTV) and organs at risk between conformal (CRT) and intensity-modul...

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