A2V: A Semi-Supervised Domain Adaptation Framework for Brain Vessel Segmentation via Two-Phase Training Angiography-to-Venography Translation [PDF]
arXiv, 2023 We present a semi-supervised domain adaptation framework for brain vessel segmentation from different image modalities. Existing state-of-the-art methods focus on a single modality, despite the wide range of available cerebrovascular imaging techniques.
arxiv
Noncontrast free-breathing respiratory self-navigated coronary artery cardiovascular magnetic resonance angiography at 3 T using lipid insensitive binomial off-resonant excitation (LIBRE) [PDF]
Journal of Cardiovascular Magnetic Resonance 2019 21:38, 2019 Robust and homogeneous lipid suppression is mandatory for coronary magnetic resonance angiography (MRA) since coronary arteries are commonly embedded in fat. However, effective large volume lipid suppression becomes challenging when performing radial whole-heart coronary MRA and the problem may even be exacerbated at increasing magnetic field strengths.
arxiv +1 more source
Cerebrovascular Segmentation via Vessel Oriented Filtering Network [PDF]
arXiv, 2022 Accurate cerebrovascular segmentation from Magnetic Resonance Angiography (MRA) and Computed Tomography Angiography (CTA) is of great significance in diagnosis and treatment of cerebrovascular pathology. Due to the complexity and topology variability of blood vessels, complete and accurate segmentation of vascular network is still a challenge.
arxiv
An Automatic Detection Method Of Cerebral Aneurysms In Time-Of-Flight Magnetic Resonance Angiography Images Based On Attention 3D U-Net [PDF]
arXiv, 2021 Background:Subarachnoid hemorrhage caused by ruptured cerebral aneurysm often leads to fatal consequences.However,if the aneurysm can be found and treated during asymptomatic periods,the probability of rupture can be greatly reduced.At present,time-of-flight magnetic resonance angiography is one of the most commonly used non-invasive screening ...
arxiv
Free-running SIMilarity-Based Angiography (SIMBA) for simplified anatomical MR imaging of the heart [PDF]
Magnetic Resonance in Medicine, 24 February 2021, 2020 Purpose: Whole-heart MRA techniques typically target pre-determined motion states and address cardiac and respiratory dynamics independently. We propose a novel fast reconstruction algorithm, applicable to ungated free-running sequences, that leverages inherent similarities in the acquired data to avoid such physiological constraints.
arxiv +1 more source
Optimization of Undersampling Parameters for 3D Intracranial Compressed Sensing MR Angiography at 7 Tesla [PDF]
arXiv, 2021 Purpose: 3D Time-of-flight (TOF) MR Angiography (MRA) can accurately visualize the intracranial vasculature, but is limited by long acquisition times. Compressed sensing (CS) reconstruction can be used to substantially accelerate acquisitions. The quality of those reconstructions depends on the undersampling patterns used in the acquisitions.
arxiv
Segmentation method for cerebral blood vessels from MRA using hysteresis [PDF]
arXiv, 2023 Segmentation of cerebral blood vessels from Magnetic Resonance Imaging (MRI) is an open problem that could be solved with deep learning (DL). However, annotated data for training is often scarce. Due to the absence of open-source tools, we aim to develop a classical segmentation method that generates vessel ground truth from Magnetic Resonance ...
arxiv
A neural network model that learns differences in diagnosis strategies among radiologists has an improved area under the curve for aneurysm status classification in magnetic resonance angiography image series [PDF]
arXiv, 2020 Purpose: To construct a neural network model that can learn the different diagnosing strategies of radiologists to better classify aneurysm status in magnetic resonance angiography images. Materials and methods: This retrospective study included 3423 time-of-flight brain magnetic resonance angiography image series (subjects: male 1843 [mean age, 50.2 +/
arxiv
Deformable Registration of MRA Images with 4D Flow Images to Facilitate Accurate Estimation of Flow Properties within Blood Vessels [PDF]
arXiv, 2023 Patients with congenital and acquired heart conditions often undergo studies using Magnetic Resonance Angiography (MRA) images and time-resolved four-dimensional phase-contrast magnetic resonance (4D Flow) images to noninvasively estimate blood flow properties such as flux, wall shear stress and vorticity.
arxiv
An Effect of Spatial Filtering in Visualization of Coronary Arteries Imaging [PDF]
International 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