Results 1 to 10 of about 1,196,806 (365)

Blood flow-induced Notch activation and endothelial migration enable vascular remodeling in zebrafish embryos. [PDF]

open access: yes, 2018
Arteries and veins are formed independently by different types of endothelial cells (ECs). In vascular remodeling, arteries and veins become connected and some arteries become veins. It is unclear how ECs in transforming vessels change their type and how
Ablooglu, Ararat J   +6 more
core   +3 more sources

Using a novel source-localized phase regressor technique for evaluation of the vascular contribution to semantic category area localization in BOLD fMRI. [PDF]

open access: yes, 2015
Numerous studies have shown that gradient-echo blood oxygen level dependent (BOLD) fMRI is biased toward large draining veins. However, the impact of this large vein bias on the localization and characterization of semantic category areas has not been ...
Gallant, Jack L, Vu, An T
core   +2 more sources

Cartilaginous metaplasia of varicose veins: a case report [PDF]

open access: yes, 2013
Cartilaginous metaplasia of superficial veins was found in a 64-year-old woman who underwent surgery for varicose veins. At operation, some varicose veins of the medial thigh were semi-rigid and fibroelastic to the touch. Histology revealed that half the
CAGGIATI, Alberto, FRANCESCHINI, MARCO
core   +1 more source

Diagnosis of venous incompetence inerectile dysfunction [PDF]

open access: yes, 1990
In 26 of 214 patients with erectile dysfunction and proved venous incompetence by cavernosography, an additional bidirectional Doppler ultrasound was performed also to demonstrate venous outflow disturbances. All except one leakage in the superficial and
Bähren, Wolfgang   +5 more
core   +1 more source

Cortical depth dependent functional responses in humans at 7T: improved specificity with 3D GRASE [PDF]

open access: yes, 2013
Ultra high fields (7T and above) allow functional imaging with high contrast-to-noise ratios and improved spatial resolution. This, along with improved hardware and imaging techniques, allow investigating columnar and laminar functional responses.
A Shmuel   +64 more
core   +8 more sources

Influence of Long-term Cytotoxic Chemotherapy on the Condition of Peripheral Venous Channel [PDF]

open access: yes, 2017
The necessity of long-term venous access in cancer patients appears at frequent and long-term courses of cytotoxic therapy. Peripheral veins of forearms are most often used for these aims. The conditions of peripheral venous channel in 32 cancer patients,
Tkachuk, T. (Tetiana)
core   +2 more sources

Age-related variations of varicose veins anatomy [PDF]

open access: yes, 2006
Background: Primary varicose veins are commonly considered a progressive disease starting from the saphenous junctions and extending to tributaries in a retrograde fashion along the saphenous trunks.
Acconcia, Maria Cristina   +4 more
core   +1 more source

Application of a Mamdani-type fuzzy rule-based system to segment periventricular cerebral veins in susceptibility-weighted images [PDF]

open access: yes, 2016
This paper presents an algorithm designed to segment veins in the periventricular region of the brain in susceptibility-weighted magnetic resonance images. The proposed algorithm is based on a Mamdani-type fuzzy rule-based system that enables enhancement
Aymerich Martínez, Francisco Javier   +3 more
core   +1 more source

Simultaneous microsurgical spermatic vein ligation and sclerotherapy - A combined procedure for the treatment of recurrent or persistent varicocele [PDF]

open access: yes, 2001
Objectives: Microsurgical ligation as well as antegrade sclerotherapy have been established in varicocele treatment. The aim of this study was to evaluate whether a combination of microsurgery.
Adam, C.   +6 more
core   +1 more source

Syngenetic sand veins and anti-syngenetic sand wedges, Tuktoyaktuk Coastlands, western Arctic Canada [PDF]

open access: yes, 2007
Sand-sheet deposits of full-glacial age in the Tuktoyaktuk Coastlands, western Arctic Canada, contain syngenetic sand veins 1-21 cm wide and sometimes exceeding 9 m in height.
Bateman   +57 more
core   +1 more source

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