Results 21 to 30 of about 6,097,379 (251)

External radiotherapy of thyroid cancer [PDF]

open access: yes, 2001
Differentiated thyroid cancer comprises papillary, mixed papillary-follicular and follicular adenocarcinomas. They are mostly hormone-sensitive and respond to thyroid-stimulating hormone (TSH) suppression. The standard treatment is total thyroidectomy. I-
Pollinger, B., Dühmke, Eckhart
core   +1 more source

Dose distribution verification for GZP6 sources: A comparison of Monte Carlo, radiochromic film, and GZP6 treatment planning system [PDF]

open access: yesArchive of Oncology, 2012
Background: Treatment planning systems (TPSs) are used for dose calculations in dose delivery by after loading brachytherapy machines. Such planning systems usually use simplified algorithms in their dose calculations.
Toossi Bahreyni Taghi Mohammad   +4 more
doaj   +1 more source

A review of computer-assisted assessment [PDF]

open access: yes, 2005
Pressure for better measurement of stated learning outcomes has resulted in a demand for more frequent assessment. The resources available are seen to be static or dwindling, but Information and Communications Technology is seen to increase productivity ...
Gráinne Conole   +4 more
core   +1 more source

Optimal postoperative radiotherapy treatment of orbital rhabdomyosarcoma [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2013
Introduction. Rhabdomyosarcoma (RMS) is the most common sarcoma of the soft tissue, mostly affecting the region of head and neck (orbit, paranasal sinus).
Petrović Borislava   +6 more
doaj   +1 more source

Validation of Motorized Wedge Effective Isodose Angle with a 2D Array Detector [PDF]

open access: yesIranian Journal of Medical Physics, 2020
Introduction: Elekta Versa HD linear accelerator is equipped with a universal wedge filter which is a single large physical wedge driven by motors; in other words, motorized wedge. It provides a nominal wedge isodose angle of 60° for the field size of 30×
Jaimin Gamit   +7 more
doaj   +1 more source

A treatment planning study of combined carbon ion-beam plus photon intensity-modulated radiotherapy

open access: yesPhysics and Imaging in Radiation Oncology, 2020
Background and purpose: Combined photon intensity-modulated radiotherapy (IMRT) and sequential dose-escalated carbon ion beam therapy (IBT) is a technically advanced treatment option for head and neck malignancies. We proposed and evaluated an integrated
Christopher Schuppert   +5 more
doaj   +1 more source

Radiotherapy treatment planning: Benefits of CT-MR image registration and fusion in tumor volume delineation [PDF]

open access: yesVojnosanitetski Pregled, 2013
Background/Aim. Development of imaging techniques, computed tomography (CT), magnetic resonance imaging (MRI), and positron emission tomography (PET), made great impact on radiotherapy treatment planning by improving the localization of target volumes.
Đan Igor   +4 more
doaj   +1 more source

Impact of breath-hold level on positional error aligned by stent/Lipiodol in Hepatobiliary radiotherapy with breath-hold respiratory control

open access: yesBMC Cancer, 2020
Background Respiratory motion management with breath hold for patients with hepatobiliary cancers remain a challenge in the precise positioning for radiotherapy.
Tzu-Jie Huang   +4 more
doaj   +1 more source

Quantification of geometric uncertainties in image guided radiotherapy [PDF]

open access: yes, 2010
The aim of this thesis is to determine if the geometric uncertainties that are introduced into the image guided radiotherapy (IGRT) process by Cone Beam CT (CBCT) based IGRT equipment are sufficiently small that they do not pose a significant risk of ...
Sykes, Jonathan
core   +5 more sources

Comparison of Volumetric Modulated Arc Therapy and Three-Dimensional Conformal Radiotherapy in Postoperative High-Grade Glioma: A Dosimetric Comparison [PDF]

open access: yesIranian Journal of Medical Physics, 2019
Introduction: We aimed to dosimetrically compare three-dimensional conformal radiotherapy (3D-CRT) and volumetric modulated arc therapy (VMAT) in terms of planning target volume (PTV) coverage, organ at risk (OAR) sparing, and conformity index (CI ...
Harikesh Singh   +12 more
doaj   +1 more source

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