Dose and blending fraction quantification for adaptive statistical iterative reconstruction based on low‐contrast detectability in abdomen CT
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12813
Abstract: Abstract Purpose The utilization of iterative reconstruction makes it difficult to identify the dose‐noise relationship, resulting in empirical design of scan protocols and inconsistent conclusions on dose reduction for consistent image quality. This study was… read more here.
Keywords: iterative reconstruction; blending fraction; contrast detectability; fraction ... See more keywords
Enhanced super‐resolution reconstruction of T1w time‐resolved 4DMRI in low‐contrast tissue using 2‐step hybrid deformable image registration
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12988
Abstract: Abstract Purpose Deformable image registration (DIR) in low‐contrast tissues is often suboptimal because of low visibility of landmarks, low driving‐force to deform, and low penalty for misalignment. We aim to overcome the shortcomings for improved… read more here.
Keywords: resolution; step; step hybrid; dir ... See more keywords
Automated development of the contrast–detail curve based on statistical low‐contrast detectability in CT images
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13719
Abstract: Abstract Purpose We have developed a software to automatically find the contrast–detail (C–D) curve based on the statistical low‐contrast detectability (LCD) in images of computed tomography (CT) phantoms at multiple cell sizes and to generate… read more here.
Keywords: based statistical; detectability; contrast; curve ... See more keywords
Salient object detection using a covariance-based CNN model in low-contrast images
Sign Up to like & getrecommendations! Published in 2017 at "Neural Computing and Applications"
DOI: 10.1007/s00521-017-2870-6
Abstract: Salient object detection model with active environment perception can substantially facilitate a wide range of applications. Conventional models primarily rely on handcrafted low-level image features or high-level features. However, these models may face great challenges… read more here.
Keywords: object detection; salient object; model; contrast images ... See more keywords
Noise-Driven Anisotropic Diffusion Filtering for X-Ray Low Contrast Imaging
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Russian Laser Research"
DOI: 10.1007/s10946-019-09782-8
Abstract: We describe theoretically a possible application of advanced noise-filtering technique to X-ray imaging of low contrast objects, using the example of X-ray studies of laser fusion capsules. Based on the concept of the nonlinear anisotropic… read more here.
Keywords: low contrast; ray; contrast; anisotropic diffusion ... See more keywords
Tilted-wire method for measuring resolution properties of CT images under extremely low-contrast and high-noise conditions
Sign Up to like & getrecommendations! Published in 2018 at "Radiological Physics and Technology"
DOI: 10.1007/s12194-018-0443-8
Abstract: Edge methods are predominantly used for modulation transfer function (MTF) measurements in computed tomography (CT) images reconstructed using iterative methods. However, edge methods employ a relatively large and distinct test object, which is intended to… read more here.
Keywords: wire method; tilted wire; method; noise ... See more keywords
37. Intercomparison in digital angiography: Low contrast detectability and air kerma data collection from digital radiology AIFM working group members
Sign Up to like & getrecommendations! Published in 2018 at "Physica Medica"
DOI: 10.1016/j.ejmp.2018.04.047
Abstract: Purpose The aim of this study is to collect Statistical Low Contrast Detectability (LCD) [1] data from different angiography using the same phantom and the same software for the analysis. Data from this study will… read more here.
Keywords: contrast; contrast detectability; radiology; angiography ... See more keywords
The Principles of Ultra-Low Contrast Percutaneous Coronary Intervention.
Sign Up to like & getrecommendations! Published in 2022 at "Indian heart journal"
DOI: 10.1016/j.ihj.2022.04.005
Abstract: Ultra-low contrast percutaneous coronary intervention (ULCPCI) can be performed electively in advanced chronic kidney disease. Engage guide catheter and advance guidewire into the coronary artery without using contrast. IVUS-guided PCI can reduce the contrast load.… read more here.
Keywords: contrast percutaneous; coronary intervention; low contrast; ultra low ... See more keywords
Neurophysiological basis of contrast dependent BOLD orientation tuning
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DOI: 10.1016/j.neuroimage.2019.116323
Abstract: Recent work in early visual cortex of humans has shown that the BOLD signal exhibits contrast dependent orientation tuning, with an inverse oblique effect (oblique > cardinal) at high contrast and a horizontal effect (vertical > horizontal) at low… read more here.
Keywords: bold orientation; contrast; orientation; orientation tuning ... See more keywords
Assessment of low contrast detection in CT using model observers: Developing a clinically-relevant tool for characterising adaptive statistical and model-based iterative reconstruction.
Sign Up to like & getrecommendations! Published in 2017 at "Zeitschrift fur medizinische Physik"
DOI: 10.1016/j.zemedi.2016.04.002
Abstract: PURPOSE This study aims to assess CT image quality in a way that would meet specific requirements of clinical practice. Physics metrics like Fourier transform derived metrics were traditionally employed for that. However, assessment methods… read more here.
Keywords: reconstruction; detection; model; model observers ... See more keywords
Fuzzy-Based Histogram Partitioning for Bi-Histogram Equalisation of Low Contrast Images
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2965174
Abstract: The conventional histogram equalisation (CHE), though being simple and widely used technique for contrast enhancement, but fails to preserve the mean brightness and natural appearance of images. Most of the improved histogram equalisation (HE) methods… read more here.
Keywords: low contrast; contrast; fuzzy based; histogram equalisation ... See more keywords