blood volume flow quantification
Blood Flow Volume Quantification in Internal Carotid and Vertebral Arteries: Comparison of 3 Different Ultrasound Techniques with Phase Contrast MR Imaging
... moving blood there is a change from one pulse to the ...movement. Blood flow usually cannot be seen in B-mode sonography, because weak echoes from blood cells are par- tially degraded due to ...
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Compensatory patterns of collateral flow in stroke patients with unilateral and bilateral carotid stenosis
... cerebral blood flow in patients with carotid ...imaging quantification ultrasound (CVIQ) was used to measure extracranial arterial blood flow volume (BFV) in bilateral common ...
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Quantification of myocardial perfusion by cardiovascular magnetic resonance
... the volume of the interstitial space region, and also specify the rate at which contrast can traverse the capillary barrier, namely the permeabil- ity-surface area product ...tissue volume will result with ...
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Quantification of Tumor Vascular Permeability and Blood Volume by Positron Emission Tomography
... Within the last decade, dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) combined with two-compartment kinetic modeling has shown potential in quantitatively assessing certain properties of tumor tissue, ...
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Atlas based analysis of 4D flow CMR: Automated vessel segmentation and flow quantification
... of blood flow visualization and quantification in the great thoracic vessels comes with a number of challenges, including segmentation of these vessels over the cardiac cycle, placement of 2D planes ...
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Simultaneous quantification of myocardial and blood flow velocities based on duplex mode ultrasound imaging
... tissue volume (2-D image section shown in Figure 2A) after imposing lateral and out- of-plane motion displacement of the ...synthetic volume in the axial ...
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Correlations between Perfusion MR Imaging Cerebral Blood Volume, Microvessel Quantification, and Clinical Outcome Using Stereotactic Analysis in Recurrent High Grade Glioma
... The results from this study can be compared with those of previous animal work by Pathak et al, 22 who perfused rat 9L gliosarcoma brains with a latex compound (Microfil; Flow Tech, South Windsor, Connecticut) to ...
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Semi automatic quantification of 4D left ventricular blood flow
... residual volume and the other flow compo- nents over one cardiac ...these flow components with our previous findings [22], some differences were observed, such as a higher amount of the Direct ...
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Dynamic, Contrast Enhanced CT of Human Brain Tumors: Quantitative Assessment of Blood Volume, Blood Flow, and Microvascular Permeability: Report of Two Cases
... the quantification of cerebral blood volume (CBV) and microvascular permeability (PS) (permeability surface area product) both in animal models (6–9) and, more recently, in human brain tumors (10, ...
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CT-perfusion measurements in pancreatic carcinoma with different kinetic models: Is there a chance for tumour grading based on functional parameters?
... that quantification of pancreatic carcinoma perfusion is feasible with the proposed VPCT- examinational protocol and that the measured perfusion values are in line with those reported in previous works dealing ...
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Correlation between Automated Quantification of Lung Perfusion Blood Volume (PBV) and Pulmonary Artery Pressure
... High-concentration iodine-based contrast material (Omnipaque 350; Daiichi-Sankyo, Tokyo, Japan) was ad- ministered at a flow rate of 4.0 mL/s followed by a 40-mL saline chaser bolus at the same injection rate. The ...
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Quantitative CMR markers of impaired vascular reactivity associated with age and peripheral artery disease
... aorta. Analogous to the measurement of arterial blood flow velocity, velocity-encoded projections were ob- tained. The time-course of the complex difference (CD) signal intensity (Figure 1b) of ...
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Nonlinear estimation of BOLD signals with the aid of cerebral blood volume imaging
... Functional magnetic resonance imaging (fMRI) offers a noninvasive technology to examine hemodynamic signals in the cerebrovascular system. The hemodynamic bal- loon model was introduced in 1998 to reveal the coupling ...
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First Results in an MR Imaging Compatible Canine Model of Acute Stroke
... In 3 experiments, we attempted chemical thrombolysis. Recanalization, defined as the restoration of blood flow to the affected area, was observed in 1 case. Figure 4 demonstrates the pretreatment and ...
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Normal Cerebral Blood Flow Volume in Healthy Nigerian Adults
... cerebral blood flow to the brain using various imaging modalities [2,5,6,8,10,20] but ultrasound was found to be excellent ...cerebral blood flow volume include Magnetic Resonance ...
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Quantification of myocardial blood flow with cardiovascular magnetic resonance throughout the cardiac cycle
... Myocardial blood flow (MBF) varies throughout the car- diac cycle in response to changes in myocardial tension and phasic compression of the myocardial microcircula- tion ...arterial blood inflow to ...
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Measurement of Circulation of Blood Volume(CBV) and Total Blood Volume(TBV) in Heart using Doppler Color Flow Imaging in Ultrasound Videos
... Doppler flow models into 5 classifications; pattern of pulmonary hypertension, increasing pattern, pattern of pulsation, closing pattern, and closed ...a flow rate of > 200 centimetre / second and a ...
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Arterial Spin Labeled Perfusion of Pediatric Brain Tumors
... tumor blood flow of high-grade tumors (grades III and IV) was significantly higher than that of low-grade tumors (grades I and II) (P ⬍ ...tumor blood flow range among high-grade tumors ...tumor blood ...
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Distribution of extravascular fluid volumes in isolated perfused lungs measured with H215O
... EVLW was compared with wet-to-dry ratios from lung biopsies taken immediately afterwards. Whereas the isotopically measured EVLW increased from apex to base, the wet-to-dry weight ratios remained essentially uniform. We ...
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VELOCITY OF BLOOD FLOW AND STROKE VOLUME OBTAINED FROM THE PRESSURE PULSE
... Multiple dye dilution cardiac output determinations were made on each dog, using Cardio-Green' and the Ensco Oximeter.3 While the dye dilution curve was being obtained on one recorder, s[r] ...
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