Results 51 to 60 of about 1,352,018 (284)

Diagnostic vascular ultrasonography with the help of color Doppler and contrast-enhanced ultrasonography [PDF]

Ultrasonography, 2016
The use of ultrasonography and especially of contrast-enhanced ultrasonography (CEUS) in the diagnosis of vascular pathologies before and after interventions has significantly increased over the past years due to the broader availability of modern ultrasound systems with CEUS capabilities and more trained user experience in this imaging modality.
Johannes Rübenthaler, Maximilian Reiser, Dirk-André Clevert   +2 more
openaire   +4 more sources

Acousto-optic frequency switching for single-camera planar Doppler velocimetry [PDF]

, 2001
A single-camera Planar Doppler velocimetry system has been demonstrated, in which illumination beams at two closely-spaced optical frequencies are derived from a single Argon-ion laser.
Nobes, David S., Tatam, Ralph P., Ford, Helen D., David S. Nobes, Helen D. Ford, Ralph P. Tatam   +5 more
core   +1 more source

Computed Tomography‐ and Photoacoustic Imaging‐Active Bioresorbable Electrospun Bismuth Nanoparticle‐Infused Small‐Diameter Vascular Grafts

Advanced Healthcare Materials, EarlyView.
A polymeric graft loaded with radiopaque bismuth nanoparticles is expected to undergo gradual polymer resorption and nanoparticle release. This design enables noninvasive, multimodal monitoring of device integrity, patency, and degradation using computed tomography alongside ultrasound and photoacoustic imaging over 12 weeks.
Allan John R. Barcena, Joy Vanessa D. Perez, Marvin R. Bernardino, Dominic Karl M. Bolinas, Kitz Paul D. Marco, Kim Claudette J. Fernandez, Archana Mishra, Erin Marie D. San Valentin, Jossana A. Damasco, Gino Martin Canlas, Natalie Fowlkes, Richard R. Bouchard, Steven Y. Huang, Marites P. Melancon   +13 more
wiley   +1 more source

Self‐Assembling Copolymers Encapsulating Single Endothelial Cells Induce Endogenous ECM Deposition and Vascular Regeneration

Advanced Materials, EarlyView.
This study presents the first demonstration of stable sub‐50‐micron single‐cell GPM vesicles fabricated through the intrinsic self‐assembly of an amphiphilic copolymer. Hierarchical assembly of cell containing GPM vesicles into microspheres enable tunable, sustained cell delivery with immune protection.
Viola B. Morris, Sangho Lee, Kalp Soni, Simon He, Matthew Huang, Dandan Chen, Dae Hoon Lee, Kyung Hee Kim, Seonggeon Cho, Laura Pencea, Divit Jain, Young‐Sup Yoon   +11 more
wiley   +1 more source

Single‐Cell Transcriptomic Analysis of Tumor Heterogeneity and the Microenvironment in Pseudomyxoma Peritonei

Advanced Science, EarlyView.
This study presents a single‐cell atlas of pseudomyxoma peritonei spanning primary and paired metastatic lesions. Distinct epithelial substates, stromal remodeling, immune exclusion, lipid metabolic reprogramming, and a candidate angiogenic network were identified in metastatic lesions.
Xi Li, Lei Wang, Lei Ai, Zimeng Li, Zhaochangci Chen, Yuchen Luo, Tianran Zhang, Mengjia Liao, Songhao Wang, Jiajia Cui, Ke Liu, Chengxian Guo, Guodong Liu, Jiye Yin, Wei Wu   +14 more
wiley   +1 more source

Prenatal Diagnosis of an Aneurysm of the Vein of Galen by Three-Dimensional Power and Color Doppler Ultrasonography

Clinical Medicine Insights: Case Reports, 2012
Aneurism of the vein of Galen is a complex arteriovenous malformation which is of multiply communications between of the vein of Galen and the cerebral arteries. It represents less than 1% of the cerebral arteriovenous malformations.
Livia Teresa Moreira Rios, Edward Araujo Júnior, Luciano Marcondes Machado Nardozza, Antonio Fernandes Moron, Marília da Glória Martins   +4 more
doaj   +1 more source

EndoTac: An Endoscopic Camera‐Based Tactile Sensor with High Sensitivity for Minimally Invasive Surgery

Advanced Science, EarlyView.
EndoTac presents a trocar‐compatible endoscopic vision‐based tactile sensor that uses a convex mirror to enlarge side‐facing tactile coverage during minimally invasive vessel palpation. Distorted tactile images are unwarped and processed by a learning model to estimate vascular deformation, enabling sensitive, spatially distributed tactile perception ...
Yupeng Wang, Nicolas Raison, Xuyang Zhang, Aijia Yang, Lukas Lindenroth, Shan Luo   +5 more
wiley   +1 more source

Inguinoscrotal and inguinolabial swelling in infancy: Role of ultrasound

African Journal of Urology, 2015
Objectives: Inguinoscrotal and inguinolabial swellings are common findings in infancy. In this study, color Doppler ultrasonography was used to identify the different etiologies of inguinoscrotal and inguinolabial swelling, thus helping to decide on the ...
Ashraf Talaat Youssef
doaj   +1 more source

Increased Disarray of Extracellular Matrix Collagen‐I Fiber Network and Compromised Biomechanics in Aortae From Marfan‐Syndrome Mice Assessed Through Combined Opto‐Biomechatronics

Advanced Science, EarlyView.
Combined structure‐function assessment in aortic rings from Marfan mice using MechaMorph Opto‐Biomechatronics technology relates increased elasticity (stiffness) and dynamic viscosity and less ordered extracellular matrix 3D‐structure (collagen) as potential causes for impaired Windkessel function and compromised haemodynamics in Marfan's syndrome ...
Dominik Schneidereit, Anika Nagel, Vanessa I. T. Zwaans, Laureen Schurr, Jonas Ahr, Michael Haug, Anna Piluso, Alexandra Sporkova, Matthias Karck, Andreas H. Wagner, Oliver Friedrich   +10 more
wiley   +1 more source

Role Of Ultrasonography, Ovarian Artery Doppler And Tumor Markers In Diagnosing Ovarian Mass [PDF]

Al-Azhar International Medical Journal
Background: Ovarian cancer remains the most lethal gynecologic malignancy due to the absence of effective early screening and the frequent presentation at advanced stages.
Hamdi Mohamed Ali Abd El-Rahman
doaj   +1 more source