Articles with "contrast" as a keyword



Risk of Gadolinium-Based Contrast Agents in Chronic Kidney Disease-Is Zero Good Enough?

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Published in 2019 at "JAMA internal medicine"

DOI: 10.1001/jamainternmed.2019.5278

Abstract: In the 1990s and early 2000s, numerous patients with chronic kidney disease (CKD) were exposed to gadolinium-based contrast agents (GBCAs) for contrast-enhanced magnetic resonance imaging (MRI). At the time, the use of GBCAs was considered… read more here.

Keywords: risk; gbcas; contrast; group ... See more keywords

Meta-analytic Techniques to Assess the Association Between N-acetylcysteine and Acute Kidney Injury After Contrast Administration

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Published in 2022 at "JAMA Network Open"

DOI: 10.1001/jamanetworkopen.2022.20671

Abstract: This systematic review and meta-analysis of N-acetylcysteine for the prevention of contrast-imaging acute kidney injury explores the heterogeneity, publication bias, and small study effect to determine the most suitable analytic method in a setting where… read more here.

Keywords: acute kidney; contrast; kidney injury; acetylcysteine ... See more keywords

Nonmonotonicity of the Frictional Bimaterial Effect

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017jb014665

Abstract: Sliding along frictional interfaces separating dissimilar elastic materials is qualitatively different from sliding along interfaces separating identical materials due to the existence of an elastodynamic coupling between interfacial slip and normal stress perturbations in the… read more here.

Keywords: contrast; nonmonotonicity frictional; friction; function bimaterial ... See more keywords

Cone‐Beam CT image contrast and attenuation‐map linearity improvement (CALI) for brain stereotactic radiosurgery procedures

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Published in 2018 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.12477

Abstract: Abstract A Contrast and Attenuation‐map Linearity Improvement (CALI) framework is proposed for cone‐beam CT (CBCT) images used for brain stereotactic radiosurgery (SRS). The proposed framework is tailored to improve soft tissue contrast of a new… read more here.

Keywords: cali; contrast; cone beam; attenuation map ... See more keywords
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CT imaging of gold nanoparticles in a human-sized phantom.

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Published in 2021 at "Journal of applied clinical medical physics"

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

Fluid‐based augmentation of magnetic resonance visualization of interventional devices

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Published in 2021 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.13407

Abstract: Abstract Purpose To evaluate the transient artifact augmentation of microtubes in magnetic resonance imaging by fluid injection. Methods Twenty‐one fluorinated ethylene propylene catheters (inner diameter 760 μm) were filled with three different contrast media at… read more here.

Keywords: contrast; magnetic resonance; interventional devices; fluid based ... See more keywords

Automated development of the contrast–detail curve based on statistical low‐contrast detectability in CT images

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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

A patient‐ and acquisition‐tailored injection approach for improving consistency of CT enhancement towards a target CT value in coronary CT angiography

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Published in 2022 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.13867

Abstract: Abstract Background Unoptimized coronary CT angiography (CTA) exams typically result in a highly variable arterial enhancement (HUa) across patients. This study aimed at harmonizing arterial enhancement by implementing a patient‐, contrast‐ and kV‐tailored injection protocol.… read more here.

Keywords: injection; contrast; enhancement; hua ... See more keywords

Refining the radiation and contrast medium dose in weight-grouped scanning protocols for coronary CT angiography.

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Published in 2023 at "Journal of applied clinical medical physics"

DOI: 10.1002/acm2.14041

Abstract: PURPOSE To refine the currently used, weight-grouped protocol for coronary computed tomography angiography (CCTA), in terms of the radiation and contrast medium dose, through clinical evaluation. METHODS Following the current routine setting that varies between… read more here.

Keywords: weight grouped; quality; contrast; group ... See more keywords

Automated measurement of detectability index in CT imaging: Development and validation

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Published in 2025 at "Journal of Applied Clinical Medical Physics"

DOI: 10.1002/acm2.70352

Abstract: Abstract Purpose The purpose of this study is to develop software for measuring the detectability index (d′) automatically from ACR 464 CT phantom images. Method Software for measuring d′ automatically was developed with Python 3.9.13… read more here.

Keywords: object diameter; contrast; detectability index; software ... See more keywords

Quantum Dots Emitting in the Third Biological Window as Bimodal Contrast Agents for Cardiovascular Imaging

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Published in 2017 at "Advanced Functional Materials"

DOI: 10.1002/adfm.201703276

Abstract: Physicians are demanding innovative technologies for multimodal imaging of the cardiovascular system that would lead to the appearance of advanced diagnosis and therapy procedures. This implies the simultaneous development of new imaging techniques and contrast… read more here.

Keywords: contrast agents; biological window; contrast; emitting third ... See more keywords