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Towards zero radiation isocentre size: minimising radiation beam isocentricity on Elekta linear accelerators by means of optimising look-up tables
The most important geometric characteristics of SRS/SBRT treatments are precise target localisation and precise aiming of the radiation beam at the...
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Practical beam steering of X-ray beams on Elekta accelerators: The effect of focal spot alignment on beam (symmetry and position) and radiation isocentre (size and position)
Acceptance and commissioning of a linear accelerator is the process of preparing it for clinical use. One of the initial important dosimetric tasks...
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Accuracy of the catalyst surface guidance system for patient monitoring during cranial SRS treatments
The use of surface guided imaging in cranial stereotactic radiotherapy provides a non-ionising form of patient position verification that gives...
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Initial end-to-end testing of the ExacTrac dynamic deep inspiration breath hold workflow using a breath hold breast phantom
ExacTrac Dynamic (ETD) provides a Deep Inspiration Breath Hold (DIBH) workflow for breast patients. Stereoscopic x-ray imaging combined with optical...
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Determination of acceptable Hounsfield units uncertainties via a sensitivity analysis for an accurate dose calculation in the context of prostate MRI-only radiotherapy
Radiation therapy is moving from CT based to MRI guided planning, particularly for soft tissue anatomy. An important requirement of this new workflow...
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Characterisation of in-room leakage and scattered radiation for the Varian Halcyon linear accelerator
Unintended sources of secondary radiation resulting from photon beams in linear accelerators are patient scatter, collimator scatter, scatter from...
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Commissioning measurements on an Elekta Unity MR-Linac
Magnetic resonance-guided radiotherapy technology is relatively new and commissioning publications, quality assurance (QA) protocols and commercial...
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Correction factors for commissioning and patient specific quality assurance of stereotactic fields in a Monte Carlo based treatment planning system
Validation of small field dosimetry is crucial for stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT). Accurate and considered...
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Comparative analysis of patient scatter to phantom scatter for computed tomography systems
Current computed tomography (CT) shielding practices are largely based on calculations of scattered radiation emitted from an acrylic head or body...
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Clinical validation of MR imaging time reduction for substitute/synthetic CT generation for prostate MRI-only treatment planning
Radiotherapy treatment planning based only on magnetic resonance imaging (MRI) has become clinically achievable. Though computed tomography (CT) is...
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Evaluation of MU2net as an online secondary dose check for MR guided radiation therapy with the Elekta unity MR linac
During the adaptive workflow associated with MRgRT, a secondary dose calculation is required and MU2net (DOSIsoft, France) is one commercial option....
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Reducing ExacTrac intrafraction imaging uncertainty for prostate stereotactic body radiotherapy using a pre-treatment CBCT
This study evaluated the intrafractional auto-matching uncertainties of prostate-implanted fiducial markers when using the ExacTrac v6.5 (Brainlab,...
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Effects of MR imaging time reduction on substitute CT generation for prostate MRI-only treatment planning
The introduction of MRI linear accelerators (MR-linacs) and the increased use of MR imaging in radiotherapy, requires improved approaches to MRI-only...
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Assessing focal spot alignment in clinical linear accelerators: a comprehensive evaluation with triplet phantoms
A fundamental parameter to evaluate the beam delivery precision and stability on a clinical linear accelerator (linac) is the focal spot position...
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Investigation of Elekta AQUA software for kilovoltage to megavoltage radiation isocenter coincidence
Elekta AQUA v2.02 software (Gantry Runout isocenter test) was investigated as a tool for verification of kilovoltage to megavoltage gantry radiation...
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A systematic review of volumetric image guidance in proton therapy
In recent years, proton therapy centres have begun to shift from conventional 2D-kV imaging to volumetric imaging systems for image guided proton...
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ACPSEM position paper: dosimetry for magnetic resonance imaging linear accelerators
Consistency and clear guidelines on dosimetry are essential for accurate and precise dosimetry, to ensure the best patient outcomes and to allow...
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Dynamic intrafractional position monitoring with implanted fiducial markers for enhanced accuracy in radiotherapy of prostate cancer
Introduction: Recent advances in the radiation therapy of prostate cancer have brought a shift toward moderate- and ultra-hypofractionated treatment...
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A model for estimating peak skin dose in CT
In interventional radiology patient care can be improved by accurately assessing peak skin dose (PSD) from procedures, as it is the main predictor...
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An anthropomorphic 3D printed inhomogeneity thorax phantom slab for SBRT commissioning and quality assurance
Anthropomorphic phantoms with tissue equivalency are required in radiotherapy for quality assurance of imaging and dosimetric processes used in...
