Results 51 to 60 of about 65,248 (216)

Pelvic target volume inter-fractional motion during radiotherapy for cervical cancer with daily iterative cone beam computed tomography

open access: yesRadiation Oncology
Background Tumor regression and organ movements indicate that a large margin is used to ensure target volume coverage during radiotherapy. This study aimed to quantify inter-fractional movements of the uterus and cervix in patients with cervical cancer ...
Zheng Zeng   +5 more
doaj   +1 more source

Phylogenetic Analysis of Citrus tristeza virus Isolates of Wild Type Citrus in China

open access: yesJournal of Integrative Agriculture, 2014
The genetic variation and phylogenetic relationships of Citrus tristeza virus (CTV) isolates collected from Chinese wild type citrus were analyzed by comparing the sequences of nine genomic regions (p23, p20, p13, p18, p25, p27, POL, HEL and k17) with ...
Long YI, Chang-yong ZHOU
doaj   +1 more source

The scenario-based generalization of radiation therapy margins

open access: yes, 2015
We give a scenario-based treatment plan optimization formulation that is equivalent to planning with geometric margins if the scenario doses are calculated using the static dose cloud approximation.
Bokrantz, Rasmus, Fredriksson, Albin
core   +1 more source

A Comparative Study of Ultrasonography and CT Venography in the Diagnosis of Budd‐Chiari Syndrome

open access: yesJournal of Clinical Ultrasound, EarlyView.
Budd‐Chiari syndrome (BCS) is characterized by hepatic venous outflow obstruction from the hepatic veins to the junction of the inferior vena cava (IVC) and right atrium. Ultrasound (US) and CT venography (CTV) are used as imaging techniques for the diagnosis of BCS, and We compared the diagnostic efficacy of the two modalities. The results showed that
Tiling Jiang   +6 more
wiley   +1 more source

Calculations for OPF with Adjustable Tap Ratios [PDF]

open access: yes, 2013
In this document, the calculations of the AC power balance and flow equations used by MATPOWER will be extended to include adjustable tap ...
Bliek, Laurens
core  

Magnetic Resonance Guided Radiation Therapy (MRgRT) Prostate Motion and Margins

open access: yesJournal of Medical Radiation Sciences, EarlyView.
This study evaluated intra‐fractional prostate motion during MR‐guided radiotherapy to determine appropriate PTV margins for prostate cancer. Analysis of 18 patients resulted in calculated margins of 3.2 mm (AP), 1.7 mm (LR), and 3.2 mm (SI), supporting the potential for margin reduction with MRgRT. ABSTRACT Introduction Systematic and random errors in
Sammi Peng   +7 more
wiley   +1 more source

Pest categorisation of Citrus tristeza virus (non‐European isolates)

open access: yesEFSA Journal, 2017
The Panel on Plant Health performed a pest categorisation of non‐European isolates of Citrus tristeza virus (CTV) for the EU territory. CTV is a well characterised virus for which efficient detection assays are available.
EFSA Panel on Plant Health (PLH)   +24 more
doaj   +1 more source

Serological and Molecular Detection of Citrus Tristeza Virus: A Review

open access: yesMicroorganisms
Citrus tristeza virus (CTV) is a globally pervasive and economically significant virus that negatively impacts citrus trees, leading to substantial reductions in fruit yield.
Pengxiang Shang, Longfa Xu, Tong Cheng
doaj   +1 more source

Shake-up at CTV

open access: yesCanadian Journal of Communication, 1975
A dispute over editorial integrity and control from the top has shaken CTV's news and public affairs department. It has resulted in the demotion of two senior CTV news executives and left the reputation of Tom Gould, a network vice-president, in a somewhat battered condition.
openaire   +2 more sources

Intrafraction motion and impact of margin reduction for MR‐Linac online adaptive radiotherapy for pancreatic cancer treatments

open access: yesJournal of Medical Radiation Sciences, Volume 72, Issue 1, Page 17-24, March 2025.
This analysis included quantification of intrafraction motion in pancreas stereotactic ablative radiotherapy treated on the MR‐Linac, leading to the development of adjusted (PTV) margins. Intrafraction motion indicated an average target displacement of 1–3 mm, resulting in an adjusted PTV margin of 2 mm in the right–left and superior–inferior ...
Ashleigh Fasala   +6 more
wiley   +1 more source

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