Results 61 to 70 of about 49,202 (282)

Phase-Based Nonrigid Deformation for Digital Subtraction Angiography

IEEE Access, 2019
We present a method for digital subtraction angiography based on phase-based nonrigid deformation with specific consideration for changes between the image pairs.
Soochahn Lee, Chang Ho Jeon, Leonard Sunwoo, Dong Yul Oh, Kyong Joon Lee   +4 more
doaj   +1 more source

Differential intensity contrast swept source optical coherence tomography for human retinal vasculature visualization [PDF]

, 2012
We demonstrate an intensity-based motion sensitive method, called differential logarithmic intensity variance (DLOGIV), for 3D microvasculature imaging and foveal avascular zone (FAZ) visualization in the in vivo human retina using swept source optical ...
Fraser, Scott, Motaghiannezam, Reza
core   +1 more source

Microrobotic Catheterization of the Ophthalmic Artery for Targeted Treatment of Retinoblastoma

Advanced Intelligent Systems, EarlyView.
A microrobotic platform is presented that allows teleoperated and autonomous navigation of flow‐driven magnetic microcatheters, MagFlow, into the ophthalmic artery for superselective intra‐arterial infusion of chemotherapy to treat retinoblastoma. Extensive benchtop validations with patient‐derived biomimetic phantoms under optical and fluoroscopic ...
Artur Banach, Mehdi Krichen, Julian Raub, Christina Stathopoulos, Bruno Bartolini, Mahmut Selman Sakar   +5 more
wiley   +1 more source

Ultra-high-resolution subtraction CT angiography in the follow-up of treated intracranial aneurysms

Insights into Imaging, 2019
In subtraction CT angiography (CTA), a non-contrast CT acquisition is subtracted from a contrast-enhanced CTA acquisition. Subtraction CTA can be applied in the detection, classification, and follow-up of intracranial aneurysms and is advantageous over ...
Frederick J. A. Meijer, Joanne D. Schuijf, Joost de Vries, Hieronymus D. Boogaarts, Willem-Jan van der Woude, Mathias Prokop   +5 more
doaj   +1 more source

Automated Fovea Detection Based on Unsupervised Retinal Vessel Segmentation Method [PDF]

, 2017
The Computer Assisted Diagnosis systems could save workloads and give objective diagnostic to ophthalmologists. At first level of automated screening of systems feature extraction is the fundamental step. One of these retinal features is the fovea.
Kalantari, Faraz, Kelley, Patrick, Nazar, Mahdieh, Tavakoli, Meysam   +3 more
core   +1 more source

Aneurysm Wall Enhancement and Probability of Instability in Unruptured Intracranial Aneurysms: A Long‐Term Follow‐Up Study

Annals of Neurology, EarlyView.
Objective Aneurysm wall enhancement (AWE) may predict aneurysm growth and rupture in the short‐term, but there is a lack of long‐term follow‐up studies. We aimed to determine whether unruptured intracranial aneurysms (UIAs) with AWE have a higher probability of aneurysm instability during long‐term follow‐up compared with those without AWE. Methods For
Laura T. van der Kamp, Maarten J. Kamphuis, Olivier Naggara, Thomas Le Tat, Gabriel J. E. Rinkel, Gérard A. P. de Kort, Ruben P. A. van Eijk, Jeroen Hendrikse, Irene C. van der Schaaf, Mervyn D. I. Vergouwen   +9 more
wiley   +1 more source

Revisiting Incomplete Tissue‐Level Reperfusion Following Successful Thrombectomy for Acute Ischemic Stroke

Annals of Neurology, EarlyView.
Among patients with acute ischemic stroke achieving successful large vessel recanalization (defined as expanded Thrombolysis in Cerebral Infarction [eTICI ≥2b]), incomplete tissue‐level reperfusion, distinct from visually identifiable distal occlusion on digital‐subtraction angiography, remains a significant challenge.
Yue Qiao, Adrien Ter Schiphorst, Yi Xu, Jean‐Claude Baron, Wenbo Zhao   +4 more
wiley   +1 more source

Heparin and air filters reduce embolic events caused by intra-arterial cerebral angiography - A prospective, randomized trial [PDF]

, 2004
Background-Intra-arterial cerebral angiography is associated with a low risk for neurological complications, but clinically silent ischemic events after angiography have been seen in a substantial number of patients.Methods and Results-In a prospective ...
Bartsch, AJ, Bendszus, M, Goldbrunner, R, Gunthner-Lengsfeld, T, Koltzenburg, M, Roosen, K, Solymosi, L, Toyka, KV, Weilbach, FX   +8 more
core   +1 more source

Maximizing Neurovascular Outcomes of Facial Transplantation: A Comprehensive Review

Clinical Anatomy, EarlyView.
ABSTRACT Facial transplantation is a division of reconstructive surgery which aims to improve the function and appearance of a face that has endured severe disfigurement. Currently, the face transplant procedure uses allogenic tissue, harvested from a brain‐dead donor, to replace damaged facial components.
Olivia A. James, Faye Bennett
wiley   +1 more source

Video-based education improves the image quality of diagnostic percutaneous cerebral angiography among elderly patients

Translational Neuroscience, 2020
Digital subtraction angiography (DSA) is considered the gold standard for cerebral vasculature observation and is increasingly applied among the elderly population.
Wang Wenbing, Wu Yongshun, Yuan Jianpeng, Yang Qian, Zhou Zhiming   +4 more
doaj   +1 more source