Assessment of quantification accuracy and image quality of a full‐body dual‐layer spectral CT system
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DOI: 10.1002/acm2.12243
Abstract: Abstract The performance of a recently introduced spectral computed tomography system based on a dual‐layer detector has been investigated. A semi‐anthropomorphic abdomen phantom for CT performance evaluation was imaged on the dual‐layer spectral CT at… read more here.
Keywords: image quality; system; dual layer; layer ... 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
Optimization of 99mTc whole‐body SPECT/CT image quality: A phantom study
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DOI: 10.1002/acm2.13528
Abstract: Abstract Purpose Investigate the impact of acquisition time and reconstruction parameters on single‐photon emission computed tomography/computed tomography (SPECT/CT) image quality with the ultimate aim of finding the shortest possible acquisition time for clinical whole‐body SPECT/CT… read more here.
Keywords: acquisition time; image quality; acquisition;
Performance evaluation of two interventional fluoroscope suites for cardiovascular imaging
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DOI: 10.1002/acm2.13741
Abstract: Abstract Interventional cardiology involves catheter‐based treatment of heart disease, generally through fluoroscopically guided interventional procedures. Patients can be subject to considerable radiation dose due to prolonged fluoroscopy time and radiographic exposure, and therefore efforts to… read more here.
Keywords: image quality; quality; cardiology; evaluation two ... See more keywords
Characterization of time of flight and resolution modeling on image quality in positron emission tomography
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DOI: 10.1002/acm2.13751
Abstract: Abstract Time‐of‐flight (TOF) and resolution modeling (RM) algorithms are frequently used in clinical PET images, and inclusion of these corrections should measurably improve image quality. We quantified the effects of these correction algorithms on reconstructed… read more here.
Keywords: image quality; resolution modeling; image; time flight ... See more keywords
Digital radiography image quality evaluation using various phantoms and software
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DOI: 10.1002/acm2.13823
Abstract: Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed… read more here.
Keywords: software; evaluation; commercial phantoms; image quality ... See more keywords
ACR benchmark testing of a novel high‐speed ring‐gantry linac kV‐CBCT system
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DOI: 10.1002/acm2.14299
Abstract: Abstract A new generation cone‐beam computed tomography (CBCT) system with new hardware design and advanced image reconstruction algorithms is available for radiation treatment simulation or adaptive radiotherapy (HyperSight CBCT imaging solution, Varian Medical Systems‐a Siemens… read more here.
Keywords: cbct; system; image; image quality ... See more keywords
Image quality characterization of an ultra‐high‐speed kilovoltage cone‐beam computed tomography imaging system on an O‐ring linear accelerator
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DOI: 10.1002/acm2.14337
Abstract: Abstract Purpose The quality of on‐board imaging systems, including cone‐beam computed tomography (CBCT), plays a vital role in image‐guided radiation therapy (IGRT) and adaptive radiotherapy. Recently, there has been an upgrade of the CBCT systems… read more here.
Keywords: quality; cbct; image; computed tomography ... See more keywords
Clinical validation of MR‐generated synthetic CT by MRCAT for brain tumor radiotherapy
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DOI: 10.1002/acm2.14494
Abstract: Abstract Objective MRI is an emerging modality in radiotherapy (RT). Accuracy synthetic CT is the prerequisite for implementing MR‐only RT planning. This study validated the commercial algorithm of MR for calculating attenuation (MRCAT) in terms… read more here.
Keywords: brain tumor; mrcat; image quality;
Evaluation of image quality in mobile cone‐beam CT with dose modulation using automatic exposure control: A phantom study
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DOI: 10.1002/acm2.70248
Abstract: Abstract Background The integration of mobile cone‐beam computed tomography (CBCT) into brachytherapy workflows offers clinical advantages such as immediate verification of applicator placement and adaptive treatment planning. These benefits require sufficient image quality to delineate… read more here.
Keywords: image; phantom; mdl; image quality ... See more keywords
A comparative evaluation of CT global noise calculation methods for clinical image quality assessment
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DOI: 10.1002/acm2.70288
Abstract: Background The recently introduced CMS quality measure for computed tomography (CT) requires compliance with two key metrics, radiation dose and image quality, across 18 exam categories. However, the method for calculating global noise (GN) remains… read more here.
Keywords: quality; wisconsin; global noise; image quality ... See more keywords