نتایج جستجو برای: the clinical target volume

تعداد نتایج: 16341196  

Journal: :iranian journal of radiation research 0
j. zhang department of radiation oncology (chest section), shandong's key laboratory of radiation oncology, shandong cancer hospital, shandong university, jinan, 250117, p. r. china j. wang department of radiation oncology (chest section), shandong's key laboratory of radiation oncology, shandong cancer hospital, shandong university, jinan, 250117, p. r. china x. heng linyi people hospital, affiliated to shandong university, school of medicine, no. 27 jiefang road, linyi, 276000, shandong province, 250012 p. r. china x. heng linyi people hospital, affiliated to shandong university, school of medicine, no. 27 jiefang road, linyi, 276000, shandong province, 250012 p. r. china x. heng linyi people hospital, affiliated to shandong university, school of medicine, no. 27 jiefang road, linyi, 276000, shandong province, 250012 p. r. china

background: this study evaluated the relation between telomere length in lymph node (ln) and prognosis of esophageal squamous cell carcinoma (escc).  materials and methods: lns collected from 50 patients were assessed by pathological examination and quantitative reverse transcription polymerase chain reaction (qrt-pcr), which was used for detecting telomere length. the relation between clinical...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1388

target tracking is the tracking of an object in an image sequence. target tracking in image sequence consists of two different parts: 1- moving target detection 2- tracking of moving target. in some of the tracking algorithms these two parts are combined as a single algorithm. the main goal in this thesis is to provide a new framework for effective tracking of different kinds of moving target...

2014
Buhong Zheng Zhiyu Huang Jinluan Li Qinghui Zhang

PURPOSE To investigate the impact of clinical target volume (CTV) shape and size on CTV to planning target volume (PTV) margin expansion. METHODS AND MATERIALS Using numerical integration methods, margins accounting for random errors and systematic errors were calculated for CTVs of different shapes and sizes. We use k(r-95) and k(s-95) to represent the coefficients, for random errors and sys...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1387

the present study is an experimental case study which investigates the impacts, if any, of skopos on syntactic features of the target text. two test groups each consisting of 10 ma students translated a set of sentences selected from advertising texts in the operative and informative mode. the resulting target texts were then statistically analyzed in terms of the number of words, phrases, si...

Journal: :iranian journal of medical physics 0
mostafa robatjazi ph.d student of medical physics, medical physics dept., faculty of medicine, tehran university of medical sciences, tehran, iran seyed rabie mahdavi assistant professor, medical physics dept., faculty of medicine, tehran university of medical sciences, tehran, iran bahram bolouri assistant professor, radiation oncology dept., faculty of medicine, tehran university of medical sciences, tehran, iran alireza nikoofar assistant professor, radiation oncology dept., faculty of medicine, tehran university of medical sciences, tehran, iran

introduction: recently, magnetic resonance spectroscopic imaging (mrsi), as a functional imaging method, has been used for clinical target volume definition. in this study, we used this method to define the target volume in prostate radiotherapy. material and method: in this study, we used images of 20 prostate cancer cases. mrsi and mri images were fused with ct images. then, treatment plannin...

2015
S. Vinod K. Lim L. Bell J. Veera L. Ohanessian E. Juresic N. Borok P. Chan R. Chee V. Do G. Govindarajulu S. Sridharan C. Johnson D. Moses S. Van Dyk L. Holloway

Journal: :Dalton transactions 2005
Sheng-Hui Li Hai-Ping Huang Shu-Yan Yu Yi-Zhi Li Hui Huang Yoshihisa Sei Kentaro Yamaguchi

A [3 + 3] modular self-assembly gives rise to the formation of basket-shaped, crown ether-functionalized, nano-sized trimetallo-macrocycles, which function as structural analogues of cyclotriveratrylenes (CTV).

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سمنان 1392

in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...

Journal: :Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics 2015
Qinghui Zhang Weijun Xiong Maria F Chan Yulin Song Chandra Burman

Rotational setup errors are usually neglected in most clinical centers. An analytical formula is developed to determine the extra margin between clinical target volume (CTV) and planning target volume (PTV) to account for setup errors. The proposed formula corrects for both translational and rotational setup errors and then incorporated into margin determination for PTV.

2015
Chan Woo Wee Wonmo Sung Hyun-Cheol Kang Kwan Ho Cho Tae Jin Han Bae-Kwon Jeong Jae-Uk Jeong Haeyoung Kim In Ah Kim Jin Hee Kim Sung Hwan Kim Suzy Kim Dong Soo Lee Me Yeon Lee Do Hoon Lim Hye Li Park Chang-Ok Suh Sang Min Yoon Il Han Kim

BACKGROUND This study aimed for a collaborative evaluation of variability in the target volumes for glioblastoma, determined and contoured by different radiotherapy (RT) facilities in Korea. METHODS Fifteen panels of radiation oncologists from independent institutions contoured the gross target volumes (GTVs) and clinical target volumes (CTVs) for 3-dimensional conformal RT or intensity-modul...

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