نتایج جستجو برای: image guided radiotherapy

تعداد نتایج: 516937  

Journal: :iranian journal of radiology 0
minho park department of radiology, kyung hee university hospital, college of medicine, kyung hee university, seoul, korea yu-mee sohn department of radiology, kyung hee university hospital, college of medicine, kyung hee university, seoul, korea; department of radiology, kyung hee university hospital, college of medicine, kyung hee university, seoul, korea. tel: +82-29588625, fax: +82-29680787

conclusion st-vab and mgl-eb are reliable biopsy methods for microcalcifications. in proper indications, breast microcalcifications could be obtained by each method without missing diagnosis of breast cancer. objectives to evaluate the outcome of st-vab and mammography-guided localization and excisional biopsy (mgl-eb) for microcalcifications. patients and methods two radiologists retrospective...

2014
Alexander Chi Nam P. Nguyen

The improved accuracy in tumor identification with FDG-PET has led to its increased utilization in target volume delineation for radiotherapy treatment planning in the treatment of lung cancer. However, PET/CT has constantly been influenced by respiratory motion-related image degradation, which is especially prominent for small lung tumors in the peri-diaphragmatic regions of the thorax. Here, ...

2014
Kavitha Srinivasan Mohammad Mohammadi Justin Shepherd

The use of Cone-beam Computed Tomography (CBCT) in radiotherapy is increasing due to the widespread implementation of kilovoltage systems on the currently available linear accelerators. Cone beam CT acts as an effective Image-Guided Radiotherapy (IGRT) tool for the verification of patient position. It also opens up the possibility of real-time re-optimization of treatment plans for Adaptive Rad...

مارینا تومانیان, , معصومه گیتی, , ندا نبی زاده, ,

The evaluate the diagnostic value of image guided Fine Needle Aspiration (FNA) in breast lesions, the cytologic results of 401 patients were studied. All patients had either unpalpable masses or lesions who were hardly possible to localize by palpation and FNA was performed by single radiologist under ultrasound guide in all cases. The cytologic results were divided into four categories (inconc...

Journal: :Clinical oncology (Royal College of Radiologists (Great Britain)) 1992
C Gzell M Back H Wheeler D Bailey M Foote

The aim of this review is to explore the changing utility of radiotherapy in the treatment of patients with glioblastoma over the past 60 years. Together with surgery, radiotherapy has always been the cornerstone of treatment of glioblastoma, but techniques have significantly advanced over this time. The exploration of early two-dimensional techniques, investigation of dose escalation, concomit...

Journal: :Scandinavian journal of medicine & science in sports 2012
R Maddison H Prapavessis M Clatworthy C Hall L Foley T Harper D Cupal B Brewer

Imagery can improve functional outcomes post-anterior cruciate ligament repair (ACLR). Research is needed to investigate potential mechanisms for this effect. The aim of this study was to (a) evaluate the effectiveness of an imagery intervention to improve functional outcomes post-ACLR, and (b) explore potential mechanisms. A randomized-controlled pilot trial was conducted. Participants were ra...

2014
Markus Stoll Kristina Giske Jürgen Debus Rolf Bendl Eva Maria Stoiber

BACKGROUND To analyse the frequency of re-planning and its variability dependent on the IGRT correction strategy and on the modification of the dosimetric criteria for re-planning for the spinal cord in head and neck IG-IMRT. METHODS Daily kV-control-CTs of six head and neck patients (=175 CTs) were analysed. All volumes of interest were re-contoured using deformable image registration. Three...

2014
Qiuzi Zhong Hong Gao Gaofeng Li Xia Xiu Qinhong Wu Ming Li Yonggang Xu

PURPOSE To compare toxicity profiles and biochemical tumor control outcomes between patients treated with image-guided intensity-modulated radiotherapy (IG-IMRT) and non-IGRT intensity-modulated radiotherapy (IMRT) for clinically localized prostate cancer. MATERIALS AND METHODS Between 2009 and 2012, 65 patients with localized prostate cancer were treated with IG-IMRT. This group of patients ...

2016
Shuxu Zhang Xiang Zhou Quanbin Zhang Shaohui Jiang Ruihao Wang Guoqian Zhang Huaiyu Lei Shengqu Lin

The aim of the present study was to investigate the role of CTVision in interfractional setup errors during intensity-modulated radiation therapy (IMRT) in 12 nasopharyngeal carcinoma (NPC) patients. The trend of setup errors as a function of time during a fractionated radiotherapy course was investigated, and the influence of reconstructive thickness on image reconstruction for setup errors wa...

Journal: :Medical dosimetry : official journal of the American Association of Medical Dosimetrists 2006
Lei Xing Brian Thorndyke Eduard Schreibmann Yong Yang Tian-Fang Li Gwe-Ya Kim Gary Luxton Albert Koong

Radiation therapy has gone through a series of revolutions in the last few decades and it is now possible to produce highly conformal radiation dose distribution by using techniques such as intensity-modulated radiation therapy (IMRT). The improved dose conformity and steep dose gradients have necessitated enhanced patient localization and beam targeting techniques for radiotherapy treatments. ...

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