Results 31 to 40 of about 30,575 (187)

Fiducial markers in prostate cancer image-guided radiotherapy [PDF]

open access: yesMedical Journal of The Islamic Republic of Iran, 2019
Background: Image-guided radiotherapy (IGRT) is recommended to reduce the risk of geometrical miss when modern radiotherapy technologies with high grades of conformity are used. The purpose of this study was to evaluate the efficacy of fiducial markers (FMs) for electronic portal imaging in prostate cancer radiotherapy in term of evaluating the ...
Ghaffari, Hamed   +5 more
openaire   +2 more sources

Computed tomography based evaluation of prostatic fiducial marker migration between the periods of insertion and simulation

open access: yesUrology Research and Practice, 2019
Objective: The aim of this study was to determine whether significant fiducial marker migration occurs between the periods of prostatic marker insertion and computed tomography (CT) performed for radiotherapy planning and if a waiting period is necessary.
Taner Arpacı   +5 more
doaj   +1 more source

Complications Associated with the Percutaneous Insertion of Fiducial Markers in the Thorax [PDF]

open access: yes, 2010
PurposeRadiosurgery requires precise lesion localization. Fiducial markers enable lesion tracking, but complications from insertion may occur. The purpose of this study was to describe complications of fiducial marker insertion into pulmonary lesions ...
Nikhil Bhagat   +6 more
core   +3 more sources

Expanding the use of real-time electromagnetic tracking in radiation oncology. [PDF]

open access: yes, 2011
In the past 10 years, techniques to improve radiotherapy delivery, such as intensity-modulated radiation therapy (IMRT), image-guided radiation therapy (IGRT) for both inter- and intrafraction tumor localization, and hypofractionated delivery techniques ...
Kupelian, Patrick A   +3 more
core   +1 more source

Qualitative Evaluation of Fiducial Markers for Radiotherapy Imaging [PDF]

open access: yesTechnology in Cancer Research & Treatment, 2014
Purpose: To evaluate visibility, artifacts, and distortions of various commercial markers in magnetic resonance imaging (MRI), computer tomography (CT), and ultrasound imaging used for radiotherapy planning and treatment guidance. Methods: We compare 2 solid gold markers, 4 gold coils, and 1 polymer marker from 3 vendors. Imaging modalities used were 3-
Maria F, Chan   +2 more
openaire   +2 more sources

Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector [PDF]

open access: yes, 2014
The production of a W boson in association with a single charm quark is studied using 4.6 fb−1 of pp collision data at s√ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider.
A Hasib   +2962 more
core   +17 more sources

Optimization of a newly defined target volume in fiducial marker-based dynamic tumor-tracking radiotherapy

open access: yesPhysics and Imaging in Radiation Oncology, 2017
Background and purpose: To optimize the selection of fiducial markers used to determine the “internal target volume for tracking” (ITVtracking) for fiducial marker-based dynamic tumor-tracking (DTT) radiotherapy for lung tumors, with four-dimensional 320-
Yusuke Iizuka   +7 more
doaj   +1 more source

2D-3D registration of CT vertebra volume to fluoroscopy projection: A calibration model assessment (doi:10.1155/2010/806094) [PDF]

open access: yes, 2010
This study extends a previous research concerning intervertebral motion registration by means of 2D dynamic fluoroscopy to obtain a more comprehensive 3D description of vertebral kinematics. The problem of estimating the 3D rigid pose of a CT volume of a
Allen, R.   +5 more
core   +2 more sources

A Skin-Conformal, Stretchable, and Breathable Fiducial Marker Patch for Surgical Navigation Systems

open access: yesMicromachines, 2020
Augmented reality (AR) surgical navigation systems have attracted considerable attention as they assist medical professionals in visualizing the location of ailments within the human body that are not readily seen with the naked eye.
Sangkyu Lee   +6 more
doaj   +1 more source

Marker based Thermal-Inertial Localization for Aerial Robots in Obscurant Filled Environments

open access: yes, 2019
For robotic inspection tasks in known environments fiducial markers provide a reliable and low-cost solution for robot localization. However, detection of such markers relies on the quality of RGB camera data, which degrades significantly in the presence
A Bircher   +6 more
core   +1 more source

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