Clinical implementation and evaluation of the Acuros dose calculation algorithm
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DOI: 10.1002/acm2.12149
Abstract: Abstract Purpose The main aim of this study is to validate the Acuros XB dose calculation algorithm for a Varian Clinac iX linac in our clinics, and subsequently compare it with the wildely used AAA… read more here.
Keywords: phantom; aaa acuros; water; acuros dose ... See more keywords
Direct comparison between surface imaging and orthogonal radiographic imaging for SRS localization in phantom
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DOI: 10.1002/acm2.12498
Abstract: Abstract Purpose Surface imaging (SI) offers a nonionizing, near real time alternative to radiographic imaging for intrafraction radiosurgery localization. In this work, we systematically compared a commercial SI system vs a commercial room mounted x‐ray… read more here.
Keywords: phantom; surface imaging; board imaging; radiographic imaging ... See more keywords
Evaluation of a commercial Monte Carlo dose calculation algorithm for electron treatment planning
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DOI: 10.1002/acm2.12622
Abstract: Abstract The RayStation treatment planning system implements a Monte Carlo (MC) algorithm for electron dose calculations. For a TrueBeam accelerator, beam modeling was performed for four electron energies (6, 9, 12, and 15 MeV), and… read more here.
Keywords: phantom; algorithm electron; dose calculation; treatment planning ... See more keywords
Deformable abdominal phantom for the validation of real‐time image guidance and deformable dose accumulation
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DOI: 10.1002/acm2.12687
Abstract: Abstract Purpose End‐to‐end testing with quality assurance (QA) phantoms for deformable dose accumulation and real‐time image‐guided radiotherapy (IGRT) has recently been recommended by American Association of Physicists in Medicine (AAPM) Task Groups 132 and 76.… read more here.
Keywords: dose accumulation; phantom; deformable abdominal; abdominal phantom ... See more keywords
Quantifying the accuracy of deformable image registration for cone‐beam computed tomography with a physical phantom
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DOI: 10.1002/acm2.12717
Abstract: Abstract Purpose Kilo‐voltage cone‐beam computed tomography (CBCT) is widely used for patient alignment, contour propagation, and adaptive treatment planning in radiation therapy. In this study, we evaluated the accuracy of deformable image registration (DIR) for… read more here.
Keywords: image; phantom; image registration; accuracy ... See more keywords
Surface and build‐up dose comparison between Elekta 6 MV flattening filter and flattening‐filter‐free beams using an advanced Markus ionization chamber and a solid water‐equivalent phantom
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DOI: 10.1002/acm2.13094
Abstract: Abstract Using a plane‐parallel advanced Markus ionization chamber and a stack of water‐equivalent solid phantom blocks, percentage surface and build‐up doses of Elekta 6 MV flattening filter (FF) and flattening‐filter‐free (FFF) beams were measured as… read more here.
Keywords: advanced markus; phantom; flattening filter; fff ... See more keywords
Image quality evaluation of intra‐irradiation cone‐beam computed tomography acquired during one‐ and two‐arc prostate volumetric‐modulated arc therapy delivery: A phantom study
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DOI: 10.1002/acm2.13095
Abstract: Abstract Purpose To evaluate (a) the effects of megavoltage (MV)‐scatter on concurrent kilovoltage (kV) projections (P MVkV) acquired during rotational delivery, and (b) the image quality of intra‐irradiation cone‐beam computed tomography (ii‐CBCT) images acquired during… read more here.
Keywords: phantom; image quality; arc; delivery ... See more keywords
CT imaging of gold nanoparticles in a human-sized phantom.
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DOI: 10.1002/acm2.13155
Abstract: INTRODUCTION Gold nanoparticles (AuNPs) are visualized and quantified in a human-sized phantom with a clinical MDCT scanner. METHODS Experiments were conducted with AuNPs between 0.00171 and 200 mgAu/mL. CT images were acquired at 80, 100, 120,… read more here.
Keywords: phantom; gold nanoparticles; contrast; human sized ... See more keywords
Optical emission‐based phantom to verify coincidence of radiotherapy and imaging isocenters on an MR‐linac
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DOI: 10.1002/acm2.13377
Abstract: Abstract Purpose Demonstrate a novel phantom design using a remote camera imaging method capable of concurrently measuring the position of the x‐ray isocenter and the magnetic resonance imaging (MRI) isocenter on an MR‐linac. Methods A… read more here.
Keywords: phantom; radiotherapy; optical emission; coincidence ... See more keywords
Development of a quasi‐humanoid phantom to perform dosimetric and radiobiological measurements for out‐of‐field doses from external beam radiation therapy
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DOI: 10.1002/acm2.13514
Abstract: Abstract Our understanding of low dose, out‐of‐field radiation and their radiobiological effects are limited, in part due to the rapid technological advances in external beam radiotherapy, especially for non‐coplanar and dynamic techniques. Reliable comparisons of… read more here.
Keywords: phantom; beam; physics; field doses ... See more keywords
Assessment of a novel commercial large field of view phantom for comprehensive MR imaging quality assurance of a 0.35T MRgRT system
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DOI: 10.1002/acm2.13535
Abstract: Abstract Consistent quality assurance (QA) programs are vital to MR‐guided radiotherapy (MRgRT), for ensuring treatment is delivered accurately and the onboard MRI system is providing the expected image quality. However, daily imaging QA with a… read more here.
Keywords: system; quality; quality assurance; mrgrt ... See more keywords