作者: 神化怪物 時(shí)間: 2025-3-21 20:38
What Protects Arm Arteries from Atherosclerosis?d bifurcations. One of the peculiar aspects of this disease is that it rarely involves the arteries of the upper limbs in humans. The reasons for this is unknown. Here we shall compare the mechanical and hemodynamic factors to which these vessels are exposed in an attempt to determine which factors 作者: 完全 時(shí)間: 2025-3-22 01:58
Analysis of Transcranial Doppler Waves: Pathophysiology of Unilateral Stenoses of the Carotid Artery enables calculation of vascular reactivity which indicates the capability of the cerebrum of controling peripheral vascular resistance. In patients with threatening cerebrovascular disease (CVD) this capability may be reduced by inadequate vascular autoregulation. It appears that changes of blood f作者: Constrain 時(shí)間: 2025-3-22 05:21 作者: circuit 時(shí)間: 2025-3-22 09:32
Radiogrametric Analysis of Carotid Bifurcation: Hemodynamic-Atherogenetic Repercussions on Surgical d recirculation [4] which are primarily determined by the vessel geometry. Therefore, it has been suggested that it is vascular geometry that should be considered a major risk factor in atherogenesis [5].作者: lipids 時(shí)間: 2025-3-22 16:21 作者: anthropologist 時(shí)間: 2025-3-22 17:22 作者: infringe 時(shí)間: 2025-3-22 21:46
Model Studies at Mechanical Aortic Heart Valve Prostheses in Steady and Physiological Pulsatile Flow?rk-Shiley Convexo-Concave, Bj?rk-Shiley Monostrut, Omniscience, St, Jude Medical and Duromedics prostheses are investigated in this model. The influence of individual valve components on the flow fields and on the pressure losses is analyzed in steady flow. A modified test setup is used in order to作者: Monotonous 時(shí)間: 2025-3-23 05:19 作者: 巧思 時(shí)間: 2025-3-23 06:25
Echocardiographic and Flow Visualization Studies of the Mechanism for Systolic Anterior Motion of th. This study tested a new hypothesis for SAM which stresses primary structural abnormalities of the papillary muscles using an . model of the left ventricle. Echocardiographic observations revealed creation of SAM by anterior and inward displacement of the papillary muscles. Septal thickening alone,作者: 減弱不好 時(shí)間: 2025-3-23 10:56
The Potential Importance of Arterial Wall Properties and Blood Flow in Relation to Atherogenesis in is accelerated in patients with essential hypertension are unknown. Abnormalities of lipid metabolism or of platelet function are seemingly not a feature of hypertension. The distribution of atherosclerotic plaques in the arteries implies an important role in atherogenesis for mechanical factors su作者: MAUVE 時(shí)間: 2025-3-23 15:16 作者: Endemic 時(shí)間: 2025-3-23 20:02
A Method of Measuring the Peak Flow-Rate and the Regurgitant Volume of Regurgitationf regurgitation. However, there are as yet no established methods of grading regurgitation by either pulsed or color Doppler flow mapping. The methods proposed so far grade regurgitation on the basis of geometrical features of the regurgitant jet, such as length, width, and area, or on the color var作者: Mucosa 時(shí)間: 2025-3-24 00:50
Characterization of Pulmonary Artery Blood Velocity Patterns in Lambsy hemodynamics. Need for improved techniques has prompted investigations of relationships between abnormal pulmonary circulations and pulmonary artery blood velocity patterns that can be observed noninvasively with pulsed Doppler ultrasound. Features commonly associated with pulmonary hypertension i作者: 審問(wèn),審訊 時(shí)間: 2025-3-24 06:25
Detection of Very Early Atherosclerosis by Duplex Sonographye aortic vessel wall showed parallel wall contours enclosing a hypoechoic space. . experiments in rabbit aortas document the distance between these contours correlating histologically with high cholesterol diet. This diet caused a broadening of the hypoechoic space in the rabbit aortic vessel wall. 作者: Occipital-Lobe 時(shí)間: 2025-3-24 09:25
Normal and Stenotic Blood Flow Velocities in Human Left Coronary Artery Measured by an 80 Channel 20oss the vessel, and [2] to analyze the characteristics of the post-stenotic coronary artery flow in man. We measured blood velocities in the left anterior descending coronary artery (LAD) by an 80 channel 20 MHz pulsed Doppler velocimeter. To investigate the characteristics of normal coronary artery作者: 毛細(xì)血管 時(shí)間: 2025-3-24 11:10 作者: 有雜色 時(shí)間: 2025-3-24 14:51
https://doi.org/10.1007/978-3-663-02651-8 severity. Commencing as a zone of intimai thickening it progresses to a severely degenerative stage associated with gross, irregular vascular thickening and profound ulceration, thrombosis, tortuosity, ectasia and aneurysmal dilatation. Death ensues from ischemia of vital organs or hemorrhage. Hemo作者: 慢慢啃 時(shí)間: 2025-3-24 19:05
https://doi.org/10.1007/978-3-663-02651-8d bifurcations. One of the peculiar aspects of this disease is that it rarely involves the arteries of the upper limbs in humans. The reasons for this is unknown. Here we shall compare the mechanical and hemodynamic factors to which these vessels are exposed in an attempt to determine which factors 作者: gonioscopy 時(shí)間: 2025-3-25 02:36 作者: 終止 時(shí)間: 2025-3-25 03:33 作者: cogitate 時(shí)間: 2025-3-25 07:32
,Einführung in die Inferenzstatistik,d recirculation [4] which are primarily determined by the vessel geometry. Therefore, it has been suggested that it is vascular geometry that should be considered a major risk factor in atherogenesis [5].作者: 證實(shí) 時(shí)間: 2025-3-25 14:01 作者: 鑲嵌細(xì)工 時(shí)間: 2025-3-25 16:00
,Testmethoden für Kardinaldaten,d is Laser Doppler anemometry (LDA), introduced into the field of artificial heart valve research in 1979 [1,2]. Measurements performed with this method do not interfere with the flow, because only laserbeams and no physical probes are present within the flow. The velocity at one point within the fl作者: 漂泊 時(shí)間: 2025-3-25 20:09 作者: 被告 時(shí)間: 2025-3-26 02:37
,Einführung in die Inferenzstatistik,on in acute left heart failure, we produced acute mitral regurgitation in seven open chest anesthetized dogs by transmyocardial chordal sectioning. With the administration of Bz (1.g/kg/min for 5 minutes intravenously) or nitroprusside (Np: 1.7 .g/kg/min for 3 to 5 minutes intravenously), the mean a作者: 最有利 時(shí)間: 2025-3-26 05:03
https://doi.org/10.1007/978-3-540-75738-2. This study tested a new hypothesis for SAM which stresses primary structural abnormalities of the papillary muscles using an . model of the left ventricle. Echocardiographic observations revealed creation of SAM by anterior and inward displacement of the papillary muscles. Septal thickening alone,作者: Ataxia 時(shí)間: 2025-3-26 10:50 作者: GEN 時(shí)間: 2025-3-26 13:42
,Testmethoden für Kardinaldaten,itive and specific, if possibly early, always available, non-invasive diagnostic method is of great importance. A method, which complies with the demands almost best, is Doppler-sonography with continuous wave emission (cw-Doppler-sonography); in the meantime this method has got an ideal complement 作者: 巡回 時(shí)間: 2025-3-26 17:53 作者: 染色體 時(shí)間: 2025-3-27 00:49
Die Untersuchung des Geisteszustandesy hemodynamics. Need for improved techniques has prompted investigations of relationships between abnormal pulmonary circulations and pulmonary artery blood velocity patterns that can be observed noninvasively with pulsed Doppler ultrasound. Features commonly associated with pulmonary hypertension i作者: 描述 時(shí)間: 2025-3-27 03:37 作者: 沒(méi)花的是打擾 時(shí)間: 2025-3-27 07:37 作者: 追蹤 時(shí)間: 2025-3-27 12:44
Die Untersuchung des Geisteszustandestic plaque formation. Von Willlebrand factor antigen (VWF:Ag) is a glycoprotein that is synthesized and secreted by endothelial cells. Elevated levels of VWF:Ag have been recently described in patients with temporal arteritis and vasculitis [1]. Since VWF:Ag is localized in and synthesized by endoth作者: embolus 時(shí)間: 2025-3-27 16:16 作者: 小丑 時(shí)間: 2025-3-27 17:51
What Protects Arm Arteries from Atherosclerosis?d bifurcations. One of the peculiar aspects of this disease is that it rarely involves the arteries of the upper limbs in humans. The reasons for this is unknown. Here we shall compare the mechanical and hemodynamic factors to which these vessels are exposed in an attempt to determine which factors are different in the arms.作者: 遍及 時(shí)間: 2025-3-27 22:42
Radiogrametric Analysis of Carotid Bifurcation: Hemodynamic-Atherogenetic Repercussions on Surgical d recirculation [4] which are primarily determined by the vessel geometry. Therefore, it has been suggested that it is vascular geometry that should be considered a major risk factor in atherogenesis [5].作者: 爭(zhēng)吵加 時(shí)間: 2025-3-28 04:18
Overview: 978-3-540-52730-5978-3-642-52338-0作者: STALL 時(shí)間: 2025-3-28 06:20
https://doi.org/10.1007/978-3-663-02651-8d bifurcations. One of the peculiar aspects of this disease is that it rarely involves the arteries of the upper limbs in humans. The reasons for this is unknown. Here we shall compare the mechanical and hemodynamic factors to which these vessels are exposed in an attempt to determine which factors are different in the arms.作者: Perigee 時(shí)間: 2025-3-28 11:09 作者: 確定的事 時(shí)間: 2025-3-28 18:10
https://doi.org/10.1007/978-3-642-52338-0Str?mung; biochemistry; biomaterial; cast; cells; diagnostics; endothelium; erythrocyte; fluid mechanics; mag作者: 尖 時(shí)間: 2025-3-28 22:05 作者: staging 時(shí)間: 2025-3-29 01:25 作者: Accrue 時(shí)間: 2025-3-29 04:09
,Legierungen von fünf und mehr Metallen,Non invasive ultrasound techniques for detection of early and progredient vascular disease-both functional and morphological-are now available for the peripheral, extracranial and intracranial circulation.作者: WAG 時(shí)間: 2025-3-29 10:43
Fluid Dynamical Mechanism of Anacrotic Notch in the Great ArteriesThere exist considerable texts on the anacrotic notch in the central arterial pulse wave, but little is known about the mechanism of the development of anacrotic notch.作者: myalgia 時(shí)間: 2025-3-29 15:08 作者: 使尷尬 時(shí)間: 2025-3-29 19:19
https://doi.org/10.1007/978-3-663-02651-8ing and profound ulceration, thrombosis, tortuosity, ectasia and aneurysmal dilatation. Death ensues from ischemia of vital organs or hemorrhage. Hemodynamic stresses are believed to localize the disease to specific sites in the circulatory system and also to induce atherosclerosis at an accelerated rate [1].作者: 殺死 時(shí)間: 2025-3-29 23:47 作者: 斷言 時(shí)間: 2025-3-30 02:23
https://doi.org/10.1007/978-3-642-92140-7 proposed so far grade regurgitation on the basis of geometrical features of the regurgitant jet, such as length, width, and area, or on the color variance of the jet, which is thought to be related to turbulence intensity. None of these methods grade regurgitation on the basis of the absolute issuing flow-rate or the regurgitant volume.作者: Abnormal 時(shí)間: 2025-3-30 04:25 作者: 畸形 時(shí)間: 2025-3-30 10:48 作者: 吞沒(méi) 時(shí)間: 2025-3-30 14:38
A Method of Measuring the Peak Flow-Rate and the Regurgitant Volume of Regurgitation proposed so far grade regurgitation on the basis of geometrical features of the regurgitant jet, such as length, width, and area, or on the color variance of the jet, which is thought to be related to turbulence intensity. None of these methods grade regurgitation on the basis of the absolute issuing flow-rate or the regurgitant volume.作者: 職業(yè) 時(shí)間: 2025-3-30 16:32
,Testmethoden für Kardinaldaten,serbeams it is possible to measure all three components of the velocity [3]. From this, turbulent information, such as the Reynolds shear stresses can be calculated. A great number of artificial heart valves have been systematically investigated in this way [4].作者: 巧辦法 時(shí)間: 2025-3-30 20:46
https://doi.org/10.1007/978-3-540-75738-2 of essential hypertension [3] and may alter vascular fluid mechanics in patients with hypertension. We describe studies which we have undertaken to test this hypothesis [4]. Such alterations may be relevant to the development of atheroma.作者: 有權(quán) 時(shí)間: 2025-3-31 03:45 作者: irreducible 時(shí)間: 2025-3-31 07:06
The Potential Importance of Arterial Wall Properties and Blood Flow in Relation to Atherogenesis in of essential hypertension [3] and may alter vascular fluid mechanics in patients with hypertension. We describe studies which we have undertaken to test this hypothesis [4]. Such alterations may be relevant to the development of atheroma.作者: 壓迫 時(shí)間: 2025-3-31 12:09
Analysis of Transcranial Doppler Waves: Pathophysiology of Unilateral Stenoses of the Carotid Arterylow in the Circle of Willis play an important role in the pathophysiology of vascular autoregulation in patients with CVD. Furthermore, our data suggest that the previously used classifications of CVD (degree of stenosis, clinical stage) allow neither precise description of the actual pathophysiology nor exact prognosis of CVD.作者: 無(wú)孔 時(shí)間: 2025-3-31 15:40
Cerebral Hemodynamic Evaluation by Means of Transcranial Doppler Sonographyficits. Two methods for cerebral hemodynamic evaluation have been recently introduced into clinical practice, the CO.-reactivity test and the acetazolamide test. Our preliminary experience with extracranial/intracranial bypass surgery for hemodynamic insufficiency is encouraging and suggests that a functional improvement can be achieved.作者: SLAY 時(shí)間: 2025-3-31 20:36
Modified Gorlin Equation for the Prediction of Stenotic Valve Orifice Area: An In Vitro Study on a B the pressure gradient in mmHg across the valve and C. is a discharge coefficient. Aaslid and associates [2], as well as Gabbay and colleagues [3], have recommended modifying the Gorlin formula for improving its prediction capabilities of valve orifice area.作者: 吊胃口 時(shí)間: 2025-4-1 00:24
Echocardiographic and Flow Visualization Studies of the Mechanism for Systolic Anterior Motion of th the basis of the currently accepted Venturi theory, did not produce SAM. Flow visualization studies confirmed the importance of drag forces in the maintenance of SAM as streamlines were observed to impact on the residual anterior leaflet which was interposed into ventricular outflow.作者: lesion 時(shí)間: 2025-4-1 05:35
Detection of Very Early Atherosclerosis by Duplex SonographyA comparable correlation was found between the width of the hypoechoic space and the severity of atherosclerotic changes..The data demonstrate that duplex sonography is a useful non-invasive approach for detection of very early atherosclerotic changes in arterial vessel walls before plaques can be identified.作者: 無(wú)政府主義者 時(shí)間: 2025-4-1 07:28 作者: Retrieval 時(shí)間: 2025-4-1 13:01
