Results 51 to 60 of about 210,084 (351)
Energy-sensitive scatter estimation and correction for spectral x-ray imaging with photon-counting detectors [PDF]
, 2022 As photon counting detectors are being explored for medical and industrial imaging applications, there is a critical need to understand spectral characteristics of scattered x-ray photons. Scattered radiation is detrimental to x-ray imaging by reducing image quality and quantitative accuracy.
arxiv +1 more source
Contrast Medium Hypersensitivity: A Large Italian Study with Long-Term Follow-Up
Biomedicines, 2022 Hypersensitivity reactions (HRs) to contrast media (CM) are a major problem. We compared differences of HRs to iodinated contrast media (ICM) versus gadolinium-based contrast media (GBCM), collecting data on prevalence, type, latency and severity ...
Eleonora Nucera +7 more
doaj +1 more source
High-Sensitivity Iodine Imaging by Combining Spectral CT Technologies [PDF]
arXiv, 2021 Spectral CT offers enhanced material discrimination over single-energy systems and enables quantitative estimation of basis material density images. Water/iodine decomposition in contrast-enhanced CT is one of the most widespread applications of this technology in the clinic. However, low concentrations of iodine can be difficult to estimate accurately,
arxiv
Vascular Specialist International, 2020 Iodinated contrast is the most common contrast agent used during endovascular abdominal aneurysm repair (EVAR). However, its use may worsen kidney function in patients with renal insufficiency.
Cesar Cuen-Ojeda +6 more
doaj +1 more source
Journal for ImmunoTherapy of Cancer, 2021 Many adverse reactions associated with immune checkpoint inhibitor (ICI) treatments are immunologically driven and may necessitate discontinuation of the ICI.
Sean L. Hammond +9 more
semanticscholar +1 more source
One-step inversion algorithms for spectral CT, with application to dynamic Cone Beam CT [PDF]
arXiv, 2021 Dual Energy Cone Beam Computed Tomography (DE-CBCT) is a promising technique for several medical applications, including dynamic angiography. Recently, a dynamical two-step method has been proposed : first, the water and iodine projections are computed from the multi-energy sinograms, then, a dynamic image of the iodine contrast is reconstructed using ...
arxiv
Effect of iodinated contrast media on thyroid: a brief review
Journal of Health Sciences, 2016 In parallel to the increased use of computed tomography, iodinated contrast agents are increasingly becoming a source of excess iodide. Iodinated contrast agents may induce thyroid dysfunction in exposed patients, especially in the presence of an ...
Şerife Mehlika Kuşkonmaz +1 more
doaj +1 more source
Feasibility of dual-energy CBCT material decomposition in the human torso with 2D anti-scatter grids and grid-based scatter sampling [PDF]
arXiv, 2023 Background: Dual-energy (DE) imaging techniques in cone-beam computed tomography (CBCT) have potential clinical applications, including material quantification and improved tissue visualization. However, the performance of DE CBCT is limited by the effects of scattered radiation, which restricts its use to small object imaging.
arxiv
Fundamental & Clinical PharmacologyIntradermal testing (IDT) with iodinated contrast media (ICMs) is an established diagnostic tool in patients with ICM hypersensitivity. Currently, it is unclear which test concentration is the more useful one, up to pure or up to 1:10 diluted ICMs.
Adrian A Schmid +3 more
semanticscholar +1 more source
A Joint Processing Strategy for Image Quality Improvement in 3D Digital Subtraction Angiography [PDF]
arXiv, 2023 Three-dimensional digital subtraction angiography (3D-DSA) is a widely adopted technique for clinical evaluation of contrast-enhanced vasculatures. The distribution of a contrast agent such as iodine is often estimated via temporal subtraction. Advancements in spectral imaging technologies such as photon counting detectors offer new opportunities to ...
arxiv