Articles with "subtraction" as a keyword



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Optimization of contrast‐enhanced breast imaging: Analysis using a cascaded linear system model

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Published in 2017 at "Medical Physics"

DOI: 10.1002/mp.12004

Abstract: Purpose: Contrast‐enhanced (CE) breast imaging involves the injection contrast agents (i.e., iodine) to increase conspicuity of malignant lesions. CE imaging may be used in conjunction with digital mammography (DM) or digital breast tomosynthesis (DBT) and… read more here.

Keywords: contrast; structural noise; energy; optimization ... See more keywords
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Adaptive Weighted Log Subtraction based on Neural Networks for Markerless Tumor Tracking using Dual-Energy Fluoroscopy.

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Published in 2019 at "Medical physics"

DOI: 10.1002/mp.13941

Abstract: PURPOSE To present a novel method, based on convolution neural networks (CNN), to automate weighted log subtraction (WLS) for dual-energy (DE) fluoroscopy to be used in conjunction with markerless tumor tracking (MTT). METHODS A CNN… read more here.

Keywords: subtraction; soft tissue; fluoroscopy; dual energy ... See more keywords
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Inline dual‐echo T2 quantification in brain using a fast mapping reconstruction technique

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Published in 2022 at "NMR in Biomedicine"

DOI: 10.1002/nbm.4811

Abstract: T2 mapping from 2D proton density and T2–weighted images (PD‐T2) using Bloch equation simulations can be time consuming and introduces a latency between image acquisition and T2 map production. A fast T2 mapping reconstruction method… read more here.

Keywords: subtraction; fast mapping; reconstruction; mapping reconstruction ... See more keywords
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Analytic double-soft integrated subtraction terms for two massive emitters in a back-to-back kinematics

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Published in 2020 at "Journal of High Energy Physics"

DOI: 10.1007/jhep07(2020)011

Abstract: We consider the double-soft limit of QCD amplitudes with two massive quarks in a back-to-back kinematics accompanied by two soft partons. We integrate analytically the respective double-soft eikonal functions over the phase space of the… read more here.

Keywords: double soft; back kinematics; kinematics; subtraction ... See more keywords
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Subtraction CT angiography in the follow-up of treated cerebral aneurysms

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Published in 2019 at "Neuroradiology"

DOI: 10.1007/s00234-019-02216-x

Abstract: Dear Editor, Patients with a treated cerebral aneurysm require follow-up to evaluate the level of aneurysm occlusion, or poss ible recanal iza t ion. In the fol low-up of endovascular coil embolization–treated aneurysms, MR angiography… read more here.

Keywords: resolution; subtraction angiography; angiography; subtraction ... See more keywords
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Comparing dual energy CT and subtraction CT on a phantom: which one provides the best contrast in iodine maps for sub-centimetre details?

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Published in 2018 at "European Radiology"

DOI: 10.1007/s00330-018-5496-x

Abstract: ObjectivesTo compare contrast-to-noise ratios (CNRs) and iodine discrimination thresholds on iodine maps derived from dual energy CT (DECT) and subtraction CT (SCT).MethodsA contrast-detail phantom experiment was performed with 2 to 15 mm diameter tubes containing… read more here.

Keywords: contrast; iodine maps; subtraction; dual energy ... See more keywords
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Impact of residual subtraction on myocardial blood flow and reserve estimates from rapid dynamic PET protocols

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Published in 2021 at "Journal of Nuclear Cardiology"

DOI: 10.1007/s12350-021-02837-x

Abstract: 13N-ammonia and 18F-flurpiridaz require longer delays between rest and stress studies to allow for decay, lowering clinical throughput. In this study, we investigated the impact of residual subtraction on MBF and MFR estimates, as well… read more here.

Keywords: residual subtraction; mfr; stress; subtraction ... See more keywords
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Automated "Bone Subtraction" Image Analysis Software Package for Improved and Faster CT Monitoring of Longitudinal Spine Involvement in Patients with Multiple Myeloma.

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Published in 2017 at "Academic radiology"

DOI: 10.1016/j.acra.2016.12.003

Abstract: RATIONALE AND OBJECTIVES The study aimed to assess the diagnostic benefit of a novel computed tomography (CT) post-processing software generating subtraction maps of longitudinal non-enhanced CT examinations for monitoring the course of myeloma bone disease… read more here.

Keywords: image reading; subtraction maps; bone; subtraction ... See more keywords
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IodiNe Subtraction mapping in the diagnosis of Pulmonary chronIc thRomboEmbolic disease (INSPIRE): Rationale and methodology of a cross-sectional observational diagnostic study

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Published in 2019 at "Contemporary Clinical Trials Communications"

DOI: 10.1016/j.conctc.2019.100417

Abstract: Chronic thromboembolic pulmonary hypertension (CTEPH) is a severe but treatable disease that is commonly underdiagnosed. Computed tomography lung subtraction iodine mapping (CT-LSIM) in addition to standard CT pulmonary angiography (CTPA) may improve the evaluation of… read more here.

Keywords: methodology; chronic thromboembolic; disease; study ... See more keywords
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An enhanced frequency dependent subtraction algorithm for removal of cardiac interference from fMEG by using minimum norm projection operator

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Published in 2020 at "Journal of Neuroscience Methods"

DOI: 10.1016/j.jneumeth.2020.108620

Abstract: BACKGROUND A frequency dependent subtraction method, SUBTR, is developed to remove maternal and fetal magnetocardiography (mMCG and fMCG) interference from fetal magnetoencephalography (fMEG). But channels close to fetal head cannot be used as references for… read more here.

Keywords: minimum norm; frequency; interference; subtraction ... See more keywords
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RNA-Ligand Interactions Quantified by Surface Plasmon Resonance with Reference Subtraction.

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Published in 2022 at "Biochemistry"

DOI: 10.1021/acs.biochem.2c00177

Abstract: Structured RNAs bind ligands and are attractive targets for small-molecule drugs. A wide variety of analytical methods have been used to characterize RNA-ligand interactions, but our experience is that most have significant limitations in terms… read more here.

Keywords: surface plasmon; subtraction; reference; ligand ... See more keywords