Results 21 to 30 of about 1,054,818 (327)
Contrast‐to‐noise ratios of diffusion anisotropy indices [PDF]
Magnetic Resonance in Medicine, 2005 AbstractThe degree of diffusion anisotropy in different brain regions is usually measured by a diffusion anisotropy index (DAI) such as relative anisotropy (RA) and fractional anisotropy (FA). FA has been reported to have a higher contrast‐to‐noise ratio (CNR) than RA. The present work compares the CNRs of seven DAIs in theoretical propagation‐of‐error
Peter B, Kingsley, W Gordon, Monahan
openaire +2 more sources
Journal of Medical Physics, 2021 In medical X-ray imaging, to perform optimal operations, it is essential for the user to understand whether a required image quality level which depends on a diagnostic task can be achieved with the imaging system used.
Sho Maruyama
doaj +1 more source
Frontiers in Biomedical Technologies, 2022 Purpose: Gold Nanoparticles (GNPs) with high density and an atomic number have lately been proposed as an alternative contrast agent for Computed Tomography (CT).
Sara Khademi +2 more
doaj +1 more source
Diagnostics, 2023 Purpose: The novel photon-counting detector (PCD) technique acquires spectral data for virtual monoenergetic imaging (VMI) in every examination. The aim of this study was the evaluation of the impact of VMI of abdominal arterial vessels on quantitative ...
Daniel Dillinger +8 more
doaj +1 more source
Contrast-to-noise ratio with different settings in a CBCT machine in presence of different root-end filling materials: an in vitro study. [PDF]
Dentomaxillofac Radiol, 2016 Demirturk Kocasarac H +4 more
europepmc +3 more sources
مجلة بغداد للعلوم, 2023 Examining and comparing the image quality of degenerative cervical spine diseases through the application of three MRI sequences; the Two-Dimension T2 Weighed Turbo Spin Echo (2D T2W TSE), the Three-Dimension T2 Weighted Turbo Spin Echo (3D T2W TSE ...
Nabaa A. Rasheed Naji
doaj +1 more source
Frontiers in Human Neuroscience, 2022 Delineation of the subthalamic nuclei (STN) on MRI is critical for deep brain stimulation (DBS) surgery in patients with Parkinson’s disease (PD). We propose this retrospective cohort study for quantitative analysis of MR signal-to-noise ratio (SNR ...
Chun-Yu Su +13 more
doaj +1 more source
Radiology and Oncology, 2022 PET/CT imaging is widely used in oncology and provides both metabolic and anatomic information. Because of the relatively poor spatial resolution of PET, the detection of small lesions is limited.
Rep Sebastijan +5 more
doaj +1 more source
The Effects Of High Dose and Low Dose Protocols In Thorax’s CT Scan Image Quality
Indonesian Journal of Applied Physics, 2021 The aim of this research was to evaluate the effects of two different dose protocols’ usage on image quality. This research was performed on three different CT Scanners using high dose and low dose protocols of thorax scan.
Ni Larasati Kartika Sari +3 more
doaj +1 more source
Objective and efficient terahertz signal denoising by transfer function reconstruction [PDF]
, 2020 As an essential processing step in many disciplines, signal denoising efficiently improves data quality without extra cost. However, it is relatively under-utilized for terahertz spectroscopy.
Chen, Xuequan +3 more
core +1 more source