Results 51 to 60 of about 1,678,416 (296)

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

open access: yesAdvanced 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   +14 more
wiley   +1 more source

High-frequency ultrasound associated with dermoscopy in pre-operative evaluation of basal cell carcinoma [PDF]

open access: yesAnais Brasileiros de Dermatologia, 2014
The recent development of high-frequency ultrasound, associated with the improved sensitivity in color Doppler, enabled the identification of various skin structures and layers.
Elisa de Oliveira Barcaui   +3 more
doaj   +2 more sources

Role of Doppler Ultrasound in Differentiation between Benign and Malignant Lymph Nodes

open access: yesSVU - International Journal of Medical Sciences, 2022
Background: A popular presenting symptom for a number of disorders is lymphadenopathy. Malignant and non-malignant lymphadenopathy differentiation has major clinical and therapeutic advantages.
Alaa Abdelhakim Taha Ahmed*   +3 more
doaj   +1 more source

Ovaidan Ultrasound Image Enhancement By Pseudocolouring. [PDF]

open access: yes, 2004
Image processing may be employed on ovarian ultrasound images to assist doctors in diagnostic analysis. The gray levels of ovarian images are usually concentrated at the zero end of the spectrum ,making the image too low in contrast and too dark for the ...
Mashor, Mohd Yusoff   +2 more
core   +1 more source

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

open access: yesAdvanced 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   +5 more
wiley   +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

open access: yesAdvanced 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   +10 more
wiley   +1 more source

Ultrasound diagnosis and misdiagnosis of endometrial polyps

open access: yes肿瘤影像学, 2015
Objective: To investigate the diagnosis and misdiagnosis of endometrial polyps by transvaginal color Doppler ultrasound. Methods: A retrospective analysis of 281 cases diagnosed as uterine endometrial polyps with transvaginal color Doppler ultrasound was
CAI Qi, SUI Long, REN Yunyun
doaj  

Processamento de sinais Doppler para obtenção de sonograma em tempo real [PDF]

open access: yes, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.A aterosclerose reduz a luz de vasos sanguíneos, causando isquemia.
Baggio, João Fernando Refosco
core  

Factors affecting color Doppler energy ultrasound recordings in an in-vitro model

open access: yes, 1998
Compared to conventional color Doppler ultrasound imaging, the new color Doppler modality "color Doppler energy" (CDE) has improved the possibility of visualizing blood vessels having low blood-flow velocities, but appears to be influenced by the ...
Pirhonen, Jouko   +6 more
core   +1 more source

Diagnostic accuracy of Doppler ultrasound technique of the penile arteries in correlation to selective arteriography [PDF]

open access: yes, 1988
In 63% of 265 patients with erectile dysfunction a relevant arterial inflow disturbance was found by Doppler ultrasound examination. Correlation between Doppler and arteriography in 58 patients showed an accuracy of 95% in detecting penile arteries and ...
Stief, Christian Georg   +4 more
core   +1 more source

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