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Planning target volume
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The CyberKnife system features a robotically-positioned linear accelerator to deliver real-time imageguided stereotactic ablative body radiotherapy (SABR). It achieves steep dose gradients using irradiation from hundreds of different directions and increases the central dose of the gross tumor volume (GTV) without increasing the marginal dose to the planning target volume.
10p
vischultz
20-10-2023
6
2
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Our purpose was to ensure that the dose constraints of the organs at risk (OARs) were not exceeded while increasing the prescription dose to the planning target volume (PTV) from 45 to 50.4 Gray (Gy) with the dynamic intensity-modulated radiotherapy (IMRT) technique. While trying for this purpose, a new dynamic IMRT technique named 90° angled collimated dynamic IMRT (A-IMRT) planning was developed by us.
9p
visharma
20-10-2023
7
2
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The aim of this study is to compare and evaluate the dose distribution and physical characteristics of two algorithms Anisotropic Analytical Algorithm (AAA) and Acuros XB (AXB) in Eclipse v13.6 software in regions heterogeneous densities. Computed Tomography Simulation (CT – Sim) data of 48 treated cancer patients (20 head and neck cancer (H&N) patients, 15 esophageal cancer patients, 8 lung cancer patients with 3 Dimensions Conformal Radiation Therapy (3D-CRT) and 5 lung cancer patients treated with Volumetric Modulated Arc Therapy (VMAT)) were used to replan the Eclipse v13.
10p
trinhthamhodang1218
14-03-2021
17
1
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Bài viết phân tích ưu nhược điểm trong kế hoạch xạ trị toàn não - tủy (CranioSpinal Irradiation - CSI) có gây mê, đánh giá các chỉ số về độ bao phủ liều tại thể tích lập kế hoạch (Planning Target Volume-PTV), các cơ quan nguy cấp (Organs At Risk-OARs) và vùng ghép trường (Junction).
8p
viankanra2711
15-09-2020
14
1
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To assess the feasibility and potential impact on target delineation of respiratory-gated (4D) contrastenhanced 18Fluorine fluorodeoxyglucose (FDG) positron emission tomography - computed tomography (PET-CT), in the treatment planning position, for a prospective cohort of patients with lower third oesophageal cancer.
8p
vimanama2711
30-07-2020
9
1
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To give advantages and disadvantages in pediatric Craniospinal Irradiation (CSI) planning with general anesthesia, to evaluate some criteria about doses covering at Planning Target Volume (PTV), Organs At Risk (OARs) and junction areas.
7p
vistockholm2711
13-12-2019
15
1
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Objectives: To evaluate and compare dose distribution between IMRT and VMAT plan in radiotherapy for head and neck cancer using TrueBeam STx accelerator. Subjects and methods: CT imaging of head and neck cancer’s patients treated with VMAT on the TrueBeam STx accelerator was used to replan using IMRT technique in TPS Eclipse v13.6.
8p
vixyliton2711
17-04-2019
44
0
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Chapter 18 - Cost volume profit analysis. In this chapter, you will learn: What is CVP analysis? the break-even point, graphing CVP relationships, target net profit, using CVP analysis for management decisions, CVP analysis with multiple products, including income taxes in CVP analysis, practical issues in CVP analysis, an activity-based approach to CVP analysis, financial planning models.
26p
trueorfalse9
04-10-2017
39
1
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Within half a century, a new branch of mathematics mathematical theory of planning-formed and flourished due to economic urgently required to implement the optimal targets: most, least, the fastest, cheapest, best, ... today, the rapid development of electronic computer engineering have made it possible to practice for design automation in many areas.
94p
nguyencuongch
27-11-2012
105
9
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Intensity-modulated radiotherapy (IMRT) has widened the horizons of radiation therapy due to its ability to conformradiation dose distributions to complex tumor target volumes while sparing nearby critical structures as much as physically possible. IMRT has also led to paradigm shifts in all elements of the chain of radiotherapy, from treatment prescription over treatment planning (“inverse” planning) to treatment delivery and verification.
472p
echbuon
02-11-2012
47
6
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CONFORMAL AND INTENSITY-MODULATED RADIOTHERAPY—WHY AND HOW? Scientific rationale Whilst drug development plays an important but expensive role in the treatment of some cancers, it is estimated that, at a time when 2% of patients are cured by drugs, some 30% are cured by a combination of surgery and radiotherapy. Radiotherapy may be the ‘sticking plaster of cancer’ but it is likely to be necessary for many decades to come and it merits continual development.
454p
gian_anh
18-10-2012
61
7
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The time required to reach other planets makes planetary surface exploration missions prime targets for automation. Sending rovers to other planets either instead of or together with people can also significantly reduce the danger and cost involved. Teams of rovers are both more fault tolerant (through redundancy) and more efficient (through parallelism) than single rovers if the rovers are coordinated well
289p
beobobeo
01-08-2012
92
11
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Radiation Oncology cung cấp cho các bạn kiến thức về ngành y đề tài: Planning target volume margins for prostate radiotherapy using daily electronic portal imaging and implanted fiducial markers...
11p
toshiba9
14-10-2011
68
4
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