نتایج جستجو برای: 3d planning

تعداد نتایج: 382805  

Robab Anbiaee Seyed Mahmoud Reza Aghamiri, Zahra Falahatpour

Introduction: Radiation therapy following breast conserving surgery is one of the most common procedures performed in any radiation oncology department. A tangential parallel-opposed pair is almost always the technique of choice for this purpose. This technique is often performed based on 3D treatment planning. The aim of this study was to compare 3D treatment planning for two different energie...

Journal: :International journal of radiation oncology, biology, physics 1994
J Jacky I Kalet J Chen J Coggins S Cousins R Drzymala W Harms M Kahn S Kromhout-Schiro G Sherouse

PURPOSE Produce a collection of software tools (computer programs) that support three-dimensional (3D) radiation therapy planning. The tools are not a complete 3D planning system. Instead, they work with any 3D planning system that meets certain minimal specifications. The tools assist in deriving anatomic data from images, generating target volume contours, evaluating treatment plans, and veri...

اصفهانی, مهبد , حداد, پیمان , سمیعی, فرهاد , عصمتی, ابراهیم , عقیلی, مهدی , مشتاقی, مریم , ندائی, حسنعلی ,

Background: The current standard of adjuvant management for gastric cancer after curative resection based on the results of intergroup 0116 is concurrent chemoradiation. Current guidelines for designing these challenging fields still include two-dimensional simulation with simple AP-PA parallel opposed design. However, the implementation of radiotherapy (RT) remains a concern. Our objective was...

Journal: :international clinical neurosciences journal 0
amirhossein saveh functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran alireza zali functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran farzad ashrafi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran sohrab shahzadi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran afsoun seddighi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran sirous momenzadeh functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran

to perform an accurate approach to the spine specially for fracture stabilization a 3d model of spine surgical region may improve this mechanism and it can help the surgeon to have a deeper glance to this scenario. the pre-op planning facility is another advantage of the patient spine specific model to take a chance of making guides to direct pedicle screws safely and increase the pathomechanic...

2013
Biao ZHANG Masaru ADACHI Qixin CAO

To tackle with mobile robot path planning problem, we developed a novel path planning method utilized 3D grid map. Firstly we construct point cloud map using mobile robot equipped with 3D-LRF, then we transform point cloud into octree data structure, getting 3D grid map. We take mobile robots size and motion into consideration, develop a D* lite algorithm based path planning method which can ge...

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: :International journal of medical informatics 2000
Heinz Handels Jan Ehrhardt Werner Plötz Siegfried J. Pöppl

The introduction of virtual reality techniques in medicine opens up new possibilities for the planning of interventions. The presented software system for virtual operation planning in orthopaedic surgery (VIRTOPS) enables the virtual preoperative 3D planning and simulation of pelvis and hip operations. It is used to plan operations of bone tumours with endoprosthetic reconstruction of the hip ...

2017
Tae-Geon Kwon

Using three-dimensional (3D) computerized simulation systems has enabled us to determine the anticipated position of the maxilla and mandibular proximal and distal segments. The bony segments need to be mobilized according to the planned final position. The concept of 3D surgical planning in orthognathic surgery has evolved continuously. While using 3D simulation for planning the correction of ...

Journal: :The Electronic Journal of Combinatorics 2013

Farid Nezhad Dadgar Hassan Ali Nedaie, Hossein Hassani, Hussain Gharaati Kaveh Shirani Tak Abi Malihe Rezaie Yazdi Maryam Rezaie Yazdi Marzieh Salimi, Reza KhodaBakhshi

Introduction: Intensity modulated radiation therapy (IMRT) and three-dimensional conformal radiation therapy (3D CRT) are two treatment modalities in prostate cancer, which provide acceptable dose distribution in tumor region with sparing the surrounding normal tissues. IMRT is based on inverse planning optimization; in which, intensity of beams is modified by using multileaf c...

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