نتایج جستجو برای: imrt

تعداد نتایج: 4522  

2014
Jun Zhao Weigang Hu Gang Cai Jiazhou Wang Jiang Xie Jiayuan Peng Zhen Zhang

PURPOSE The purpose of this study is to compare the dosimetric differences among volumetric modulated arc therapy (VMAT), fixed-field intensity modulated radiotherapy (IMRT) and three-dimensional conformal radiotherapy (3D-CRT) for the preoperative locally advanced rectal cancer (LARC). METHODS Ten LARC patients treated in our department using the simultaneous escalate strategy were retrospec...

2016
Gang Yin Pei Wang Jinyi Lang Yin Tian Yangkun Luo Zixuan Fan Kin Yip Tam

PURPOSE Intensity modulated radiation therapy (IMRT) compensation based on 3D high-dose-rate (HDR) intracavitary brachytherapy (ICBT) boost technique (ICBT + IMRT) has been used in our hospital for advanced cervix carcinoma patients. The purpose of this study was to compare the dosimetric results of the four different boost techniques (the conventional 2D HDR intracavitary brachytherapy [CICBT]...

2013
Hua Yang Li-Qiong Diao Mei Shi Rui Ma Jian-Hua Wang Jian-Ping Li Feng Xiao Ying Xue Man Xu Bin Zhou

OBJECTIVES Long-term locoregional control following intensity-modulated radiotherapy (IMRT) for locally advanced squamous cell carcinoma of the head-and-neck (SCCHN) remains challenging. This study aimed to assess the efficacy and toxicity of IMRT with and without chemotherapy or surgery in locally advanced SCCHN. MATERIALS AND METHODS Between January 2007 and January 2011, 61 patients with l...

2017
Rui You Ying-Shu Cao Pei-Yu Huang Lei Chen Qi Yang You-Ping Liu Xiong Zou Yi-Nuan Zhang Rou Jiang Meng-Xia Zhang Chong-Yang Duan Ai-Hua Lin Ming-Huang Hong Ming-Yuan Chen

Purpose: We used randomized trials of radiotherapy (RT) with or without chemotherapy in non-metastatic nasopharyngeal carcinoma to investigate the survival benefit of chemoradiotherapy regimens between two/three-dimensional radiotherapy (2D/3D RT) and intensity-modulated radiotherapy (IMRT). Methods: Overall, 27 trials and 7,940 patients were included. Treatments were grouped into seven categor...

2013
Vicky Koh Johann I Tang Bok Ai Choo Chek Wee Tan Boon Keat Lim Liang Shen Jiade Jay Lu

BACKGROUND Irradiation of the supraclavicular fossa is commonly used as part of adjuvant breast radiotherapy. Intensity-modulated radiotherapy (IMRT) may be used to target this region accurately, and there are subgroups of patients that may benefit more from IMRT than others. We identify the benefit of IMRT over fixed-depth dose prescription to the supraclavicular fossa in patients of different...

Journal: :Urologic Oncology-seminars and Original Investigations 2021

The aim of this study was to investigate the clinical significance effect age on disease control in men who received high-dose intensity-modulated radiation therapy (IMRT) for nonmetastatic prostate cancer (NMPCa). NMPCa patients with favorable intermediate very high-risk features (National Comprehensive Cancer Network risk classification) treated IMRT at our institution between September 2000 ...

2012
Salma K. Jabbour Shyamal Patel Joseph M. Herman Aaron Wild Suneel N. Nagda Taghrid Altoos Ahmet Tunceroglu Nilofer Azad Susan Gearheart Rebecca A. Moss Elizabeth Poplin Lydia L. Levinson Ravi A. Chandra Dirk F. Moore Chunxia Chen Bruce G. Haffty Richard Tuli

Purpose. To compare the acute toxicities of IMRT to 3D-conformal radiation therapy (3DCRT) in the treatment of rectal cancer. Methods and Materials. Eighty-six patients with rectal cancer preoperatively treated with IMRT (n = 30) and 3DCRT (n = 56) were retrospectively reviewed. Rates of acute toxicity between IMRT and 3DCRT were compared for anorexia, dehydration, diarrhea, nausea, vomiting, w...

2015
Tamer Dawod Mostafa Elnaggar Mustafa Kamal

Introduction: Intensity Modulated Radiation Therapy (IMRT) planning dose calculation process depends on IMRT dose constraints. So, if there was any structure along the treatment beam path not delineated, it would not be taken into account during that calculation process. During IMRT routine practical work, it is noticed that there are some non-delineated normal tissue volumes that received un-a...

Journal: :Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2005
Anurag Chandra Thomas M Guerrero H Helen Liu Susan L Tucker Zhongxing Liao Xiaochun Wang Hasan Murshed Mark D Bonnen Amit K Garg Craig W Stevens Joe Y Chang Melinda D Jeter Radhe Mohan James D Cox Ritsuko Komaki

BACKGROUND AND PURPOSE To evaluate the feasibility whether intensity-modulated radiotherapy (IMRT) can be used to reduce doses to normal lung than three-dimensional conformal radiotherapy (3 DCRT) in treating distal esophageal malignancies. PATIENTS AND METHODS Ten patient cases with cancer of the distal esophagus were selected for a retrospective treatment-planning study. IMRT plans using fo...

2013
Alexander Chi Nam P Nguyen William Tse Gill Sobremonte Patrick Concannon Angela Zhu

PURPOSE To assess if intensity-modulated radiotherapy (IMRT) can possibly lead to improved local control and lower incidence of vision impairment/blindness in comparison to non-IMRT techniques when treating sinonasal malignancies; what is the most optimal dose constraints for the optic pathway; and the impact of different IMRT strategies on optic pathway sparing in this setting. METHODS AND M...

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