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Dose homogeneity
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As known, due to many advantages, X-ray machines have been widely applied in society-economy such as medicine, industry, customs, biology, etc. Depending on an aim of use, they have been manufactured with different structures on generating tube, range of high voltage, current of generating tube, anode target, additional and inherent filters, collimator for X-ray beam, etc.
7p
vicedric
08-02-2023
5
4
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This study aims to compare and evaluate the dose distribution and physical characteristics of photon beams 6 MV Flattening Filter (FF) and 6 MV Flattening Filter Free (FFF) of TrueBeam STx (FFF) in Eclipse v13.6 software in head and neck cancer (H&N) treatment plans.
18p
vicedric
08-02-2023
2
1
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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.
13p
visnape
30-01-2023
4
3
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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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This prospective study aimed to compare dose volume histograms (DVH) of the breasts and organs at risk (OARs) of whole breast radiotherapy in the supine and prone positions, and frequency and severity of acute and late toxicities were analyzed.
11p
vimale2711
25-08-2020
8
2
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To determine the relationship between percentage of germination and seedling emergence in sunflower seeds, achenes were irradiated at doses of 0, 100, 200, 300, 400, 500, 600, 700, 800, 900 and 1000 Gy, to establish an estimation model between both variables. Main objective was, to compare the homogeneity of slopes between germination and sprouting, of sunflower achenes irradiated with 60Co gamma rays. Regression models for both cases were determined by the least squares method. Slopes in question were analyzed using the tcal test for homogeneous variances.
6p
trinhthamhodang3
17-02-2020
11
0
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To determine the relationship between percentage of germination and seedling emergence in sunflower seeds, achenes were irradiated at doses of 0, 100, 200, 300, 400, 500, 600, 700, 800, 900 and 1000 Gy, to establish an estimation model between both variables. Main objective was, to compare the homogeneity of slopes between germination and sprouting, of sunflower achenes irradiated with 60Co gamma rays. Regression models for both cases were determined by the least squares method. Slopes in question were analyzed using the tcal test for homogeneous variances.
6p
trinhthamhodang3
14-02-2020
8
1
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In the present investigation dry and homogeneous seeds of two varieties of sesame were irradiated with different doses of gamma rays viz. 250, 300, 350 and 400 Gy. The effect of mutagenesis or radio sensitivity of gamma rays on different biological parameters like germination (%), pollen fertility (%), shoot length, root length, plant survival are being studied in M1 generation.
10p
kequaidan2
13-12-2019
17
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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In order to understand the roles of the epoxide hydrolases (EHs) in xenobiotic biotransformation in insects, we exam-ined the induction of EHs by exogenous compounds in Drosophila melangasterthird instar larvae. Among the chemicals tested, clofibrate, a phenoxyacetate hypolipider-mics drug, increased EH activity towardscis-stilbene oxide approximately twofold in larval whole-body homogenates. The same dose of clofibrate also induced glutathione S-transferase activity.
10p
fptmusic
12-04-2013
35
1
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Brachytherapy Brachytherapy is the direct implantation of radioactive sources into the prostate. It is based on the principle that the deposition of radiation energy in tissues decreases as a function of the square of the distance from the source (Chap. 81). The goal is to deliver intensive irradiation to the prostate, minimizing the exposure of the surrounding tissues. The current standard technique achieves a more homogeneous dose distribution by placing seeds according to a customized template based on CT and ultrasonographic assessment of the tumor and computer-optimized dosimetry.
5p
konheokonmummim
03-12-2010
83
3
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