Results 21 to 30 of about 125,724 (249)

In Vivo Assessment of Hypoxia Levels in Pancreatic Tumors Using a Dual-Modality Ultrasound/Photoacoustic Imaging System

Micromachines, 2021
Noninvasive anatomical and functional imaging has become an essential tool to evaluate tissue oxygen saturation dynamics in preclinical or clinical studies of hypoxia. Our dual-wavelength technique for photoacoustic (PA) imaging based on the differential
Yuhling Wang, De-Fu Jhang, Chia-Hua Tsai, Nai-Jung Chiang, Chia-Hui Tsao, Chiung-Cheng Chuang, Li-Tzong Chen, Wun-Shaing Wayne Chang, Lun-De Liao   +8 more
doaj   +1 more source

Tissue Oxygen Saturation Mapping with Magnetic Resonance Imaging [PDF]

Journal of Cerebral Blood Flow & Metabolism, 2014
A quantitative estimate of cerebral blood oxygen saturation is of critical importance in the investigation of cerebrovascular disease. While positron emission tomography can map in vivo the oxygen level in blood, it has limited availability and requires ionizing radiation.
Thomas, Christen, Pierre, Bouzat, Nicolas, Pannetier, Nicolas, Coquery, Anaïck, Moisan, Benjamin, Lemasson, Sébastien, Thomas, Emmanuelle, Grillon, Olivier, Detante, Chantal, Rémy, Jean-François, Payen, Emmanuel Luc, Barbier   +11 more
openaire   +2 more sources

The Relation Between Capillary Transit Times and Hemoglobin Saturation Heterogeneity. Part 2: Capillary Networks

Frontiers in Physiology, 2018
Brain metabolism is highly dependent on continuous oxygen supply. Cortical microvascular networks exhibit heterogeneous blood flow, leading to non-uniform tissue oxygenation and capillary hemoglobin saturation.
Adrien Lücker, Timothy W. Secomb, Matthew J. P. Barrett, Bruno Weber, Patrick Jenny   +4 more
doaj   +1 more source

Regional tissue oxygen saturation: comparability and reproducibility of different devices [PDF]

Journal of Biomedical Optics, 2011
Comparability and reproducibility of different near-infrared spectroscopy devices measuring regional tissue oxygen saturation remain poor. Aim of the present study was to compare values and reproducibility of cerebral∕peripheral "tissue-oxygenation-index" (TOI; NIRO 300, Hamamatsu(®), Japan) with cerebral∕peripheral "regional-oxygen-saturation" (rSO ...
Mirjam, Pocivalnik, Gerhard, Pichler, Heinz, Zotter, Nina, Tax, Wilhelm, Müller, Berndt, Urlesberger   +5 more
openaire   +2 more sources

Brain Tissue Oxygen Saturation Increases During the Night in Adolescents [PDF]

, 2013
How does the oxygen metabolism change during sleep? We aimed to measure the change in brain tissue oxygen saturation (StO2) before and after sleep with near-infrared spectroscopy (NIRS) using an in-house developed sensor. According to the synaptic homeostasis hypothesis [1], synaptic downscaling during sleep would result in reduced energy consumption ...
Metz, Andreas Jaakko, Pugin, Fiona, Huber, Reto, Achermann, Peter, Wolf, Martin   +4 more
openaire   +3 more sources

Wireless monitoring of liver hemodynamics in vivo. [PDF]

PLoS ONE, 2014
Liver transplants have their highest technical failure rate in the first two weeks following surgery. Currently, there are limited devices for continuous, real-time monitoring of the graft.
Tony J Akl, Mark A Wilson, M Nance Ericson, Ethan Farquhar, Gerard L Coté   +4 more
doaj   +1 more source

The effect of selective cerebral perfusion on cerebral versus somatic tissue oxygenation during aortic coarctation repair in neonates and infants

BMC Anesthesiology, 2021
Background Suboptimal tissue perfusion and oxygenation may be the root cause of certain perioperative complications in neonates and infants having complicated aortic coarctation repair.
Li Zhang, Lu Liu, Zhiqiu Zhong, Hengfang Jin, Jian Jia, Lingzhong Meng, Xuming Mo, Xiaohua Shi   +7 more
doaj   +1 more source

Comparative study between the effects of dexmedetomidine and propofol on cerebral oxygenation during sedation at pediatric cardiac catheterization

Annals of Cardiac Anaesthesia, 2016
Introduction: Nowadays, assessment of brain oxygen saturation, which is simply appliable and noninvasive method, can provide the anesthesia plans to be optimized according to the needs of the brain, which is the main target organ. Brain may be exposed to
Murat Cetin, Handan Birbicer, Olgu Hallioglu, Gulhan Orekeci   +3 more
doaj   +1 more source

Eigenspectra optoacoustic tomography achieves quantitative blood oxygenation imaging deep in tissues

Nature Communications, 2016
Spectral corruption impedes imaging of blood oxygen saturation. Here Tzoumas et al.describe light fluence in the spectral domain and introduce eigenspectra Multispectral Optoacoustic Tomography to account for wavelength-dependent light attenuation and ...
Stratis Tzoumas, Antonio Nunes, Ivan Olefir, Stefan Stangl, Panagiotis Symvoulidis, Sarah Glasl, Christine Bayer, Gabriele Multhoff, Vasilis Ntziachristos   +8 more
doaj   +1 more source

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source