Results 61 to 70 of about 3,345,378 (306)

Ventilation/perfusion SPECT/CT in patients with pulmonary emphysema. Evaluation of software-based analysing

, 2015
UNLABELLED The purpose of this study was to evaluate the reproducibility of a new software based analysing system for ventilation/perfusion single-photon emission computed tomography/computed tomography (V/P SPECT/CT) in patients with pulmonary ...
Brenner, W., Pöllinger, Alexander, Schreiter, V., Huebner, H, Doellinger, F, Brenner, W, Schreiter, N. F., Bredow, J, Buchert, R, Schreiter, V, Hamm, B, Heimann, U, Kroencke, T J, Buchert, R., Bredow, J., Steffen, I., Kröncke, Thomas, Steffen, I, Huebner, H., Heimann, U., Hamm, B., Schreiter, N F, Doellinger, F., Poellinger, A.   +23 more
core   +1 more source

Riociguat versus sildenafil on hypoxic pulmonary vasoconstriction and ventilation/perfusion matching [PDF]

, 2018
Introduction Current treatment with vasodilators for pulmonary hypertension associated with respiratory diseases is limited by their inhibitory effect on hypoxic pulmonary vasoconstriction (HPV) and uncoupling effects on ventilation-perfusion (V'/Q ...
Virginia Chamorro, Daniel Morales-Cano, Francisco Perez-Vizcaino, Morales Cano, Daniel, Mondejar-Parreño, Gema, Javier Milara, Esquivel Ruiz, Sergio Antonio, Moreno, Laura, Esquivel-Ruiz, Sergio, Gema Mondejar-Parreño, María Callejo, Moreno Gutiérrez, Laura, Cortijo, Julio, Pérez Vizcaíno, Francisco, Mondejar Parreño, Gema, Sergio Esquivel-Ruiz, Cogolludo, Ángel, Barberá, Joan A, Chamorro, Virginia, Callejo, María, Julio Cortijo, Morales-Cano, Daniel, Ángel Cogolludo, Barreira, Bianca, Barberà i Mir, Joan Albert, Cogolludo Torralba, Ángel Luis, Barberá, Joan A., Milara, Javier, Joan A. Barberá, Callejo Arranz, María, Laura Moreno, Perez-Vizcaino, Francisco, Bianca Barreira   +32 more
core   +1 more source

Intrasplenic Thymus Organogenesis from Injectable Tissue Fragments Restores Functional T‐Cell Immunity

Advanced Science, EarlyView.
Clinical intramuscular thymus transplantation yields only short‐lived efficacy and marginal therapeutic benefits. Benefiting from the spleen's intrinsic strengths—rapid vascular perfusion, abundant developmental factors, and resident progenitors—the intrasplenic thymic grafts achieve robust thymic regeneration and substantial T‐cell reconstitution ...
Shaocong Wang, Zijian Zhang, Fulin Dai, Zhijie Yin, Zhen Xing, Yurong Li, Haochong Lei, Junfeng Zhang, Chunyan Liu, Yan Li, Lei Dong   +10 more
wiley   +1 more source

Barium sulfate aspiration: Is early bronchioalveolar lavage a life-saving procedure?

Turkish Journal of Emergency Medicine, 2020
Aspiration of barium sulfate is a well-known complication, occurring accidentally during contrast-enhanced examinations of the upper gastrointestinal system.
Amarjeet Kumar, Ajeet Kumar, Neeraj Kumar, Chandni Sinha, Jitendra Kumar Singh   +4 more
doaj   +1 more source

The effect of inspired oxygen concentration on the ventilation-perfusion distribution in inhomogeneous lungs.

, 2000
The coupled conservation of mass equations for oxygen, carbon dioxide and nitrogen are written down for a lung model consisting of two homogeneous alveolar compartments (with different ventilation-perfusion ratios) and a shunt compartment.
Whiteley, Jonathan, Gavaghan, David, Hahn, CE   +2 more
core   +1 more source

SerpinA3 is an Endogenous TGF‐β Receptor Antagonist that Attenuates Cardiac Fibroblast Activation and Fibrotic Remodeling

Advanced Science, EarlyView.
SerpinA3 acts as an endogenous TGF‐β receptor antagonist that binds to the extracellular domain of TGFR‐1, thereby preventing TGFR‐1–TGFR‐2 complex formation. This receptor‐level blockade suppresses TGF‐β/Smad2/3 signaling, attenuates cardiac fibroblast activation, and extracellular matrix deposition, and ultimately alleviates pressure overload–induced
Hui Wang, Jieyu Cui, Chunlu Huang, Wanyi Guo, Tong Liu, Yi Zhu, Shuai Shao, Kangyin Chen, Jinlong He, Qiankun Bao   +9 more
wiley   +1 more source

Effects of regional perfusion block in healthy and injured lungs

Intensive Care Medicine Experimental, 2017
Background Severe hypoperfusion can cause lung damage. We studied the effects of regional perfusion block in normal lungs and in the lungs that had been conditioned by lavage with 500 ml saline and high V T (20 ml kg−1) ventilation. Methods Nineteen pigs
Barbara Cambiaghi, Francesco Vasques, Onnen Mörer, Christian Ritter, Tommaso Mauri, Nils Kunze-Szikszay, Karin Holke, Francesca Collino, Giorgia Maiolo, Francesca Rapetti, Elias Schulze-Kalthoff, Tommaso Tonetti, Günter Hahn, Michael Quintel, Luciano Gattinoni   +14 more
doaj   +1 more source

Revisiting atelectasis in lung units with low ventilation/perfusion ratios [PDF]

Journal of Applied Physiology, 2019
Patients on high inspired O 2 concentrations are at risk of atelectasis, a problem that has been quantitatively assessed using analysis of ratio of ventilation to perfusion (V̇a/Q̇) equations.
James P. Butler, Atul Malhotra, Stephen H. Loring   +2 more
openaire   +2 more sources

Radiation‐Triggered Chemokine‐Secreting Probiotics for Boron Neutron Capture Therapy Based Radioimmunotherapy

Advanced Science, EarlyView.
Engineered Escherichia coli Nissle 1917 with a tannic acid‐mediated BPA coating enables tumor‐targeted boron delivery for BNCT. The low‐level incidental radiation generated during BNCT activate a RecA‐driven circuit to induce CXCL10, while radiation‐enhanced bacterial colonization triggers in situ vaccination and systemic antitumor immunity.
Yang Liu, Yuzhong Qian, Shaobo Huang, Bingbing Li, Yue Yu, Xiang Cheng, Chang Chen, Jiheng Wang, Maosong Yang, Lizheng Liang, Xiancai Meng, Zhigang Liu   +11 more
wiley   +1 more source

Distribution of blood flow and ventilation-perfusion ratio in the lung, measured with radioactive CO₂

, 1960
Inhaled radioactive CO2 is rapidly taken up by pulmonary blood. By external counting over the chest during breath holding, the clearance rate of radioactive CO2xs from the counting field can be recorded, and is proportional to the regional perfusion. In
J. B. West, C. T. Dollery
core   +1 more source