作者: Mortar 時(shí)間: 2025-3-21 23:01 作者: averse 時(shí)間: 2025-3-22 02:04 作者: 我沒有命令 時(shí)間: 2025-3-22 04:41 作者: Venules 時(shí)間: 2025-3-22 12:44
Exercise Doppler cardiography,gh Bousfield was the first to detect ECG changes during stress in 1918 [1], Master and Jaffe [2] introduced this idea as a diagnostic tool in 1941. Since then this technique has been in increasing use, with modifications, in order to increase its value for the diagnosis of coronary artery disease. I作者: Chronic 時(shí)間: 2025-3-22 13:47 作者: Chronic 時(shí)間: 2025-3-22 20:38 作者: Inelasticity 時(shí)間: 2025-3-23 00:38
Quantitative evaluation of aortic and mitral stenosis by continuous wave Doppler echocardiography,ese techniques, the clinician can reliably identify the presence of abnormal valvular structure and indirectly demonstrate its hemodynamic significance through chamber enlargement or hypertrophy. However, neither technique can measure actual pressure gradients across stenotic valves and because of t作者: 有抱負(fù)者 時(shí)間: 2025-3-23 04:04
A new approach to noninvasive estimation of stenotic orifice area in semilunar valve stenosis by Dovalve [1–9]. Although the pressure gradient is a practically useful parameter to evaluate the severity of stenotic valve lesions, it essentially depends on flow rate. For a given stenotic orifice, it may vary with the changes in the hemodynamic state of the heart, and not be simply regarded as an ab作者: Orchiectomy 時(shí)間: 2025-3-23 05:45
Evaluation of left ventricular diastolic filling by a pulse Doppler flowmeter in patients with coroe of changes in LV volume is used for the assessment of LV diastolic filling. However, in CAD, the calculation of LV volume is sometimes difficult because of the regional abnormalities of LV wall motion. The transmitral blood flow during diastole is equal to the rate of changes in LV volume in the a作者: 妨礙 時(shí)間: 2025-3-23 12:23 作者: 歌曲 時(shí)間: 2025-3-23 15:00 作者: MAPLE 時(shí)間: 2025-3-23 19:12
Effects of diltiazem on left ventricular diastolic behavior in patients with hypertrophic cardiomyozem [3] for the treatment of hypertrophic cardiomyopathy (HCM). However, few data [4, 5] are available on the hemodynamic effects of these drugs on left ventricular (LV) diastolic behavior during exercise. To estimate the effect of diltiazem on the LV diastolic abnormality in patients (pts) with HCM作者: 琺瑯 時(shí)間: 2025-3-24 00:38
The disturbance of left ventricular inflow by prolapsing and non-prolapsing left atrial myxoma: Est[3], which is a useful method for diagnosis of not only the presence of myxoma but also the characteristics of myxoma. Characteristics of the myxoma would include its size, the site of attachment and it is prolapsing or not. However, the hemodynamic alteration of left ventricular (LV) filling where 作者: Rejuvenate 時(shí)間: 2025-3-24 05:48 作者: 開始沒有 時(shí)間: 2025-3-24 09:20 作者: strain 時(shí)間: 2025-3-24 12:16 作者: Iniquitous 時(shí)間: 2025-3-24 15:28
Influence of the geometry of the ascending aorta upon the velocity profile,umed to be flat [1–4]. The recorded velocities will then represent the spatial mean velocity, and the stroke volume is obtained as the product of the integral of the velocity curve and the cross sectional area of the aorta at the same level.作者: 酷熱 時(shí)間: 2025-3-24 20:14 作者: 嬉耍 時(shí)間: 2025-3-25 00:03 作者: 兇兆 時(shí)間: 2025-3-25 06:10
Nonlinear Vibration with Controlte although incomplete appreciation of their complexity and direct implications in cardiovascular pathophysiology. Flow pulsatility, the aortic valve, the particular configuration of the thoracic aorta with its branching and its intrinsic elastic properties all contribute in shaping velocity profile作者: Ejaculate 時(shí)間: 2025-3-25 09:37
https://doi.org/10.1007/978-3-030-96603-4umed to be flat [1–4]. The recorded velocities will then represent the spatial mean velocity, and the stroke volume is obtained as the product of the integral of the velocity curve and the cross sectional area of the aorta at the same level.作者: Communicate 時(shí)間: 2025-3-25 14:25 作者: PON 時(shí)間: 2025-3-25 15:54 作者: Observe 時(shí)間: 2025-3-25 20:19 作者: 制定法律 時(shí)間: 2025-3-26 02:43
Emilian I. P?r?u,Jean-Marc Vanden-Broeckg distance of intrusion of the regurgitant jet have appeared in the literature [1–4]. These reports are based purely on empirical data where ultrasound doppler and angiography are compared. The theory behind jet intrusion has not been considered. Some investigators, however, have failed to confirm t作者: Foreshadow 時(shí)間: 2025-3-26 05:39 作者: Optic-Disk 時(shí)間: 2025-3-26 12:25 作者: Noctambulant 時(shí)間: 2025-3-26 15:32
Nonlinear Waves in Circular Basinse of changes in LV volume is used for the assessment of LV diastolic filling. However, in CAD, the calculation of LV volume is sometimes difficult because of the regional abnormalities of LV wall motion. The transmitral blood flow during diastole is equal to the rate of changes in LV volume in the a作者: KEGEL 時(shí)間: 2025-3-26 18:37 作者: 種屬關(guān)系 時(shí)間: 2025-3-26 21:46 作者: 抱狗不敢前 時(shí)間: 2025-3-27 01:46 作者: CULP 時(shí)間: 2025-3-27 07:06
https://doi.org/10.1007/978-3-319-31462-4[3], which is a useful method for diagnosis of not only the presence of myxoma but also the characteristics of myxoma. Characteristics of the myxoma would include its size, the site of attachment and it is prolapsing or not. However, the hemodynamic alteration of left ventricular (LV) filling where 作者: Prostaglandins 時(shí)間: 2025-3-27 13:30 作者: 生意行為 時(shí)間: 2025-3-27 16:44
Overview: 978-94-010-8383-6978-94-009-4241-7作者: 睨視 時(shí)間: 2025-3-27 20:47
https://doi.org/10.1007/978-3-030-96603-4umed to be flat [1–4]. The recorded velocities will then represent the spatial mean velocity, and the stroke volume is obtained as the product of the integral of the velocity curve and the cross sectional area of the aorta at the same level.作者: 混雜人 時(shí)間: 2025-3-27 23:07
Nonlinear Waves in Circular Basinsvalve [1–9]. Although the pressure gradient is a practically useful parameter to evaluate the severity of stenotic valve lesions, it essentially depends on flow rate. For a given stenotic orifice, it may vary with the changes in the hemodynamic state of the heart, and not be simply regarded as an absolute measure of the obstruction.作者: IRATE 時(shí)間: 2025-3-28 03:43
http://image.papertrans.cn/c/image/221753.jpg作者: 鎮(zhèn)壓 時(shí)間: 2025-3-28 08:21 作者: SPECT 時(shí)間: 2025-3-28 13:40
Nonlinear Vibration with ControlUp to late seventies the essentially only method of Doppler frequency measurement was the counting of zero crossings (ZCC) of Doppler signal. The response of the ZCC to the signal is in direct proportion to the second moment of the spectrum of the measured signal.作者: 圓錐 時(shí)間: 2025-3-28 15:36
Nonlinear Vibrations and the Wave EquationOne of the reasons why echocardiography has not replaced angiography is due to the poor resolution of intracardiac blood-flow images. Thus, a non-invasive method for real-time blood-flow imaging using ultrasound has long been required in the fields of both cardiology and cardiovascular surgery.作者: shrill 時(shí)間: 2025-3-28 19:19 作者: 貨物 時(shí)間: 2025-3-29 00:17
A history of echocardiography,This will be a rather personal narrative, based on recollected history backed by publications where possible. More details and illustrations are in a number of publications by the early workers [1, 2]. The chronological tables show the parallel time course of development in Europe, Japan and the United States.作者: 大火 時(shí)間: 2025-3-29 06:32
,Time interval histogram — An alternative in the detection of the maximum velocity in the heart,Up to late seventies the essentially only method of Doppler frequency measurement was the counting of zero crossings (ZCC) of Doppler signal. The response of the ZCC to the signal is in direct proportion to the second moment of the spectrum of the measured signal.作者: 組成 時(shí)間: 2025-3-29 07:44 作者: 凝結(jié)劑 時(shí)間: 2025-3-29 13:10
Evaluating the fetal circulation by combined pulsed Doppler and 2-D echocardiography,Recent advances of 2D echocardiography and Doppler method have enabled us to record the states of fetal heart and to analyse fetal cardiac anatomy and physiology.作者: Parameter 時(shí)間: 2025-3-29 16:26 作者: 精密 時(shí)間: 2025-3-29 23:16 作者: watertight, 時(shí)間: 2025-3-30 01:08
Y. Y. Chen,C. P. Tsai,H. H. Hwungon. Moreover, the ability of 2DE to quantify mitral stenosis in patients with poor parasternal short-axis images is quite limited. This is especially true when assessing restenosis following commissurotomy since surgery frequently deforms the valve and submitral structures causing echo dropout of both the medial and lateral valve margins.作者: 無王時(shí)期, 時(shí)間: 2025-3-30 05:12
T. R. Akylas,Yorgos D. Kantziosstolic pressure as this is a sensitive measure of left ventricular function. Changes in the resting end diastolic pressure often preceed changes in other parameters of left ventricular function and provide an early marker of deterioration in left ventricular function. They also reflect early changes in response to treatment.作者: BUDGE 時(shí)間: 2025-3-30 08:45 作者: Contort 時(shí)間: 2025-3-30 16:19 作者: 披肩 時(shí)間: 2025-3-30 16:39 作者: 有雜色 時(shí)間: 2025-3-30 23:48 作者: 古老 時(shí)間: 2025-3-31 04:18
Assessment of left ventricular end-diastolic pressure by Doppler velocity analysis across the mitrastolic pressure as this is a sensitive measure of left ventricular function. Changes in the resting end diastolic pressure often preceed changes in other parameters of left ventricular function and provide an early marker of deterioration in left ventricular function. They also reflect early changes in response to treatment.作者: Foolproof 時(shí)間: 2025-3-31 05:00 作者: ABOUT 時(shí)間: 2025-3-31 12:04 作者: Engulf 時(shí)間: 2025-3-31 15:18
Nonlinear Vibrations and the Wave Equationc chamber. Therefore, in order to assess the whole aspect of intracardiac flow topography, Doppler searching should be done from point to point in the cardiac chamber, so that it has been rather troublesome. Thus, it has been desired to image blood flows in the cardiac chamber together with the cardiac structures on the echocardiogram.作者: 我說不重要 時(shí)間: 2025-3-31 20:50 作者: 琺瑯 時(shí)間: 2025-4-1 00:42 作者: 尊重 時(shí)間: 2025-4-1 04:02
Value of real-time two-dimensional Doppler flow imaging in cardiology,c chamber. Therefore, in order to assess the whole aspect of intracardiac flow topography, Doppler searching should be done from point to point in the cardiac chamber, so that it has been rather troublesome. Thus, it has been desired to image blood flows in the cardiac chamber together with the cardiac structures on the echocardiogram.作者: 濃縮 時(shí)間: 2025-4-1 08:29
Quantification of heart valve regurgitation by jet intrusion,he above findings [5–8]. This fact has led us to make model experiments and a theoretical analysis of the hydrodynamics of valve regurgitation in order to clarify the importance of different factors influencing the distance of jet intrusion [8]. One way to approach a complicated hydrody- namic problem is to present an application from common life.作者: 我要威脅 時(shí)間: 2025-4-1 10:35
Nonlinear Waves in Circular Basinsause of the regional abnormalities of LV wall motion. The transmitral blood flow during diastole is equal to the rate of changes in LV volume in the absence of regurgitation or shunt flow into the LV, which is independent of the regional LV wall motion.作者: 紳士 時(shí)間: 2025-4-1 16:58
T. Yasuda,T. Mishima,Y. Tsuchiyaf global ventricular function in patients with known or suspected heart disease. Unlike M-mode echocardiography, Doppler flow velocity patterns reflect the function of the entire ventricle and not just an ‘ice pick’ sample.作者: STEER 時(shí)間: 2025-4-1 20:43 作者: GROSS 時(shí)間: 2025-4-2 02:23
Evaluation of left ventricular diastolic filling by a pulse Doppler flowmeter in patients with coroause of the regional abnormalities of LV wall motion. The transmitral blood flow during diastole is equal to the rate of changes in LV volume in the absence of regurgitation or shunt flow into the LV, which is independent of the regional LV wall motion.作者: 無效 時(shí)間: 2025-4-2 05:12 作者: START 時(shí)間: 2025-4-2 08:16
Effects of diltiazem on left ventricular diastolic behavior in patients with hypertrophic cardiomyoft ventricular (LV) diastolic behavior during exercise. To estimate the effect of diltiazem on the LV diastolic abnormality in patients (pts) with HCM, transmitral flow velocity during diastole was studied before and after dynamic leg exercise using a pulse Doppler combined with 2-D echocardiograph.
