نتایج جستجو برای: conformal radiotherapy

تعداد نتایج: 82078  

Journal: :World Journal Of Advanced Research and Reviews 2021

Jugulo-tympanic paragangliomas are rare benign tumors arising from the neuroectodermal cells of tympanic cavity and dome jugular vein. Surgical resection has long been first-line treatment. However, when this is not possible, radiotherapy remains a therapeutic alternative allowing local control with less morbidity. We report case patient an unresectable tympano-jugular paraganglioma, symptomala...

Journal: :Medicinski Pregled 2022

Introduction. In locally advanced cancers of the cervix, endometrium and vulva, radiotherapy is primary treatment modality. recent years, new modern techniques external radiation have been developed in oncology, with goal dose escalation to target volume, while sparing healthy tissues. The aim this study determine impact volumetric modulated arc therapy on clinical outcomes patients gynecologic...

ژورنال: کومش 2020
Abedi, Iraj, Akbari-Zadeh, Hadi, Amouheidari, Alireza, Saadatmand, Pegah, Shanei, Ahmad,

Introduction: The purpose of this study was to evaluate the dosimetric and radiobiological parameters of salivary glands in treatment of patients with oral tongue cancer by 3D conventional radiotherapy (3D-CRT) and intensity modulated radiation therapy (IMRT) techniques. Materials and Methods: This study was performed on treatment planning of patients with oral tongue cancer in T2-3/N0 cancer s...

2014
Dai-yuan Ma Bang-xian Tan Mi Liu Xian-fu Li Ye-qin Zhou You Lu

AIM The aim of this study was to evaluate the effects of radiotherapy plus concurrent weekly cisplatin chemotherapy on the postoperative recurrence of mediastinal lymph node metastases in esophageal cancer patients. METHODS Ninety-eight patients were randomly enrolled to receive either three-dimensional conformal radiotherapy alone (group A) or concurrent chemoradiotherapy (group B). A radiat...

Journal: :Iraqi journal of science 2022

Modern radiotherapy facilities like 3-Dimensional conformal radio therapy (3DCRT), Intensity Modulated Radiotherapy (IMRT), were recently suggested in Co-60 machine with Multi-leaf Collimator (MLC). In this study, two reference chambers NE-2571#1205 and NE2581#537 used for absolute dose measurement Equinox accelerator. A comparison of by different IAEA protocols TRS-277 TRS-398 has been studied...

2015
Alexander Muacevic John R Adler Kyle Stang Fiori Alite Jennifer Steber Bahman Emami Murat Surucu

Malignancies with a superficial involvement of the scalp present a unique technical challenge for radiation treatment planning. As an example of this, leukemic infiltration of the superficial skin as the only presentation of the disease is a rare entity. For such cases, radiation oncologists have typically treated with 3D conformal radiotherapy with matched electron fields, a technique that can...

2017
Maher Soliman

Abstract Background: Radiation induced esophageal toxicity is a primary cause of treatment interruptions in the radiotherapy of lung cancer, for which there are no clear predictive factors. This study attempts to identify risk factors associated with the development of severe radiation induced esophageal toxicity using clinical and dosimetric parameters. Methods: We reviewed the medical records...

Journal: :Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica 2002
Kozo Yoshimori

The goal of radiation therapy for non-small cell lung cancer (NSCLC) is to improve the survival rate of patients without increasing treatment-related toxicity and to improve patients' quality of life. Several prospective randomized trials have demonstrated a survival advantage in combined modality treatment over radiotherapy or chemotherapy alone when a cisplatin-based chemotherapy regimen is u...

2009
Pei-Wei Shueng Shih-Chiang Lin Hou-Tai Chang Ngot-Swan Chong Yu-Jen Chen Li-Ying Wang Yen-Ping Hsieh Chen-Hsi Hsieh

The spine is the most common site for bone metastases. Radiation therapy is a common treatment for palliation of pain and for prevention or treatment of spinal cord compression. Helical tomotherapy (HT), a new image-guided intensity modulated radiotherapy (IMRT), delivers highly conformal dose distributions and provides an impressive ability to spare adjacent organs at risk, thus increasing the...

Journal: :Head & neck 2015
Paolo Antognoni Mario Turri-Zanoni Stefania Gottardo Marinella Molteni Luca Volpi Carla Facco Stefania Freguia Cinzia Mordacchini Abdulaziz AlQahtani Maurizio Bignami Carlo Capella Paolo Castelnuovo

BACKGROUND Intestinal-type adenocarcinoma (ITAC) is a rare and locally aggressive occupation-related tumor. Currently, endoscopic-assisted resection and advances in irradiation modalities (3D conformal radiotherapy/intensity-modulated radiation therapy [IMRT]) are emerging as an alternative to traditional open surgery and conventional radiotherapy. METHODS Retrospective analysis of 30 consecu...

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