Results 171 to 180 of about 787,550 (414)

Hepatic Artery Aneurysms as a Rare but Important Cause of Abdominal Pain; a Case Series

open access: yesArchives of Academic Emergency Medicine, 2019
Hepatic artery aneurysm (HAA) is the common visceral aneurysms with the highest reported rate of rupture. The clinical manifestations depending on the size of the aneurysm include epigastric pain, obstruction of biliary tract, rupture and death.
Hamidreza Haghighatkhah   +5 more
doaj   +1 more source

Volumetric microvascular imaging of human retina using optical coherence tomography with a novel motion contrast technique [PDF]

open access: yes, 2009
Phase variance-based motion contrast imaging is demonstrated using a spectral domain optical coherence tomography system for the in vivo human retina. This contrast technique spatially identifies locations of motion within the retina primarily associated
Fingler, Jeff   +4 more
core   +2 more sources

In-Silico Investigation of 3D Quantitative Angiography for Internal Carotid Aneurysms Using Biplane Imaging and 3D Vascular Geometry Constraints [PDF]

open access: yesarXiv
Quantitative angiography (QA) in two dimensions has been instrumental in assessing neurovascular contrast flow patterns, aiding disease severity and treatment outcome evaluations. However, QA requires high spatio-temporal resolution, restricting its use to digital subtraction angiography (DSA), and is prone to errors in quantification of highly 3D flow
arxiv  

An Effect of Spatial Filtering in Visualization of Coronary Arteries Imaging [PDF]

open access: yesInternational Journal of Computer Science & Information Technology (IJCSIT), Vol. 2, No. 1, 2009, PP: 35-40, 2011
At present, coronary angiography is the well known standard for the diagnosis of coronary artery disease. Conventional coronary angiography is an invasive procedure with a small, yet inherent risk of myocardial infarction, stroke, potential arrhythmias, and death.
arxiv  

Noncontrast MR angiography: An update

open access: yesJournal of Magnetic Resonance Imaging, 2018
Both computed tomography (CT) angiography (CTA) and contrast‐enhanced MR angiography (CEMRA) have proven to be useful and accurate cross‐sectional imaging modalities over a wide range of vascular territories and vascular disorders. A key advantage of MRA
R. Edelman, I. Koktzoglou
semanticscholar   +1 more source

Investigating the effective annual dose of radiation angiography department of Afshar Hospital in Yazd and providing radiation protection strategies to better manage the dose received by staff

open access: yesطب کار, 2020
Introduction: Due to the increasing use of angiography procedures and the higher risk of deterministic and stochastic effects for radiation workers of these sections than other radiological procedures, radiation safety is very important among angiography
Azam Asgari   +5 more
doaj  

k-Space Deep Learning for Parallel MRI: Application to Time-Resolved MR Angiography [PDF]

open access: yesarXiv, 2018
Time-resolved angiography with interleaved stochastic trajectories (TWIST) has been widely used for dynamic contrast enhanced MRI (DCE-MRI). To achieve highly accelerated acquisitions, TWIST combines the periphery of the k-space data from several adjacent frames to reconstruct one temporal frame.
arxiv  

Select Features of Diabetic Retinopathy on Swept-Source Optical Coherence Tomographic Angiography Compared With Fluorescein Angiography and Normal Eyes.

open access: yesJAMA ophthalmology, 2016
IMPORTANCE Optical coherence tomographic angiography (OCTA) is a recently developed noninvasive imaging technique that can visualize the retinal and choroidal microvasculature without the injection of exogenous dyes. OBJECTIVE To evaluate the potential
D. Salz   +9 more
semanticscholar   +1 more source

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