作者: 觀點 時間: 2025-3-21 23:50
Pulmonary hypertension,Accurate assessment of pulmonary artery pressure has traditionally been obtainable only with invasive cardiac catheterization. However, recently M-mode and Doppler echocardiography has been helpful in identifying patients with normal and elevated pulmonary artery pressure.作者: 腐爛 時間: 2025-3-22 01:23 作者: 觀察 時間: 2025-3-22 06:40
https://doi.org/10.1007/978-3-319-91292-9order to obtain cardiac ultrasound images are limited. These limited areas, so-called ’acoustic-windows’, lie on the left sternal border (parasternal), over the apex (apical), below the xiphoid (subcostal), and in the suprasternal notch (suprasternal). Because the heart lies at a variable depth with作者: convulsion 時間: 2025-3-22 11:09
Coda: With Byron on Acrocorinth,h evaluation. Two-dimensional echocardiography provides anatomical findings that include: doming of the anterior mitral leaflet in the long axis view, and stenotic mitral orifice like the appearance of a fish mouth in the short axis view (Figure 3.1). The assessment of the mitral valve area can be o作者: Neuralgia 時間: 2025-3-22 13:54
Introduction: Motions and Means,g to site of the defect. The three types are: (1) ostium secundum, (2) ostium primum and (3) sinus venosus. In clinical practice the secundum defect is the most common type of atrial septal defect which is located in the site of foramen ovale. Two-dimensional echocardiography can directly demonstrat作者: Neuralgia 時間: 2025-3-22 18:53
https://doi.org/10.1007/978-3-031-60705-9 to the difficulty of obtaining optimal images. To understand the echocardiographic alterations due to coronary artery disease, it is necessary to have a good knowledge of the cardiac anatomy, especially the wall segments (Figure 5.1). Using echocardiography one can assess regional segments of the a作者: 使人入神 時間: 2025-3-22 21:32 作者: 上下連貫 時間: 2025-3-23 03:55
Radcliffe and the Spectral Scene of Reading,ul for diagnosis of not only the presence of a myxoma, but also for the evaluation of its characteristics, including size, the site of attachment, consistency (fragile or not) and motility. Echocardiography is the method of choice for its clinical diagnosis and also has replaced angiocardiography fo作者: onlooker 時間: 2025-3-23 07:14 作者: COUCH 時間: 2025-3-23 10:49
Romantic Self-Transformation in Kierkegaardation. However, M-mode echocardiographic studies are limited by an ’Ice-pick’ view of cardiac structures that becomes an impediment to quantitative segmental analysis during spontaneous alterations. In contrast, two-dimensional echocardiography is more comprehensive imaging technique, but has clinic作者: 有角 時間: 2025-3-23 17:44
Michael N. Forster,Lina Steineration on the two-dimensional image. This method is an application of the pulsed Doppler method. The conventional FFT analysis takes too much time to analyze the blood flow information for color flow mapping. Moving target indication and autocorrelation methods are employed to process the spatial flo作者: 發(fā)展 時間: 2025-3-23 20:12
Developments in Cardiovascular Medicinehttp://image.papertrans.cn/c/image/227919.jpg作者: 動脈 時間: 2025-3-24 01:33 作者: 積習(xí)難改 時間: 2025-3-24 03:07 作者: Diatribe 時間: 2025-3-24 09:05 作者: miracle 時間: 2025-3-24 11:13
The basics of cardiac ultrasound, the wavelength. Ultrasound used for imaging applications is formed into a beam and has the physical properties of both a beam and sound, such as (1) attenuation, (2) reflection, (3) refraction, (4) characteristic velocity in each medium, (5) straight propagation through homogeneous medium and (6) Doppler effect.作者: SOBER 時間: 2025-3-24 18:44
Echocardiographic examination,in the thorax, parasternal cardiac imaging is often facilitated by positioning the patient on his left side so that the heart falls against the left anterior chest wall. These transducer locations have been named by the American Society of Echocardiography (A.S.E.) for standardization.作者: 懲罰 時間: 2025-3-24 20:10
Book 1989ty as non-invasive diagnostic procedures for many cardiovascular disorders. The objective of this t~xtbook is to offer a detailed yet concise overview of the echocardiographic diagnosis of the various cardiovascular diseases. The book focuses upon the practical echocardiographic (including Doppler) 作者: Generosity 時間: 2025-3-25 01:05
Errant Thoughts and Social Crimes in , the wavelength. Ultrasound used for imaging applications is formed into a beam and has the physical properties of both a beam and sound, such as (1) attenuation, (2) reflection, (3) refraction, (4) characteristic velocity in each medium, (5) straight propagation through homogeneous medium and (6) Doppler effect.作者: 不給啤 時間: 2025-3-25 03:28 作者: 強行引入 時間: 2025-3-25 11:30
https://doi.org/10.1007/978-3-031-60705-9ion with Doppler echocardiography, has been shown to be effective in diagnosing the mechanical complication of myocardial infarction, including ventricular septal rupture, ruptured papillary muscle, papillary muscle dysfunction, cardiac rupture, ventricular aneurysm, pseudoaneurysm and right ventricular infarction.作者: opprobrious 時間: 2025-3-25 14:09 作者: ECG769 時間: 2025-3-25 15:56
0166-9842 reliability as non-invasive diagnostic procedures for many cardiovascular disorders. The objective of this t~xtbook is to offer a detailed yet concise overview of the echocardiographic diagnosis of the various cardiovascular diseases. The book focuses upon the practical echocardiographic (including作者: Fierce 時間: 2025-3-25 21:05
Romantic Self-Transformation in Kierkegaardng hemodynamic changes due to altered electrical activity, due to its ability to determine beat-to-beat changes in stroke volume and filling volume, irrespective of ventricular asynchrony. This method could also be used to evaluate the significance of atrial contribution to ventricular filling in the healthy or diseased subject.作者: HUMP 時間: 2025-3-26 03:02 作者: 領(lǐng)袖氣質(zhì) 時間: 2025-3-26 04:39
Book 1989concept of an integrated echocardiographic examination, the two-dimensional, M-mode and Doppler echocardiographic findings are included in many of the diseases. Usually, the echocardiographic examination is approached first by two-dimensional imag- ing to give an understanding of the anatomical corr作者: 放縱 時間: 2025-3-26 12:14 作者: 支架 時間: 2025-3-26 16:00 作者: FILTH 時間: 2025-3-26 19:42
Introduction: Motions and Means,oxical or exhibits flattening (Figure 4.3), but in rare cases normal IVS motion can also occur (Figures 4.5). In primum type atrial septal defect, the defect is located in the inferior portion of atrial septum close to the atrioventricular valves (Figure 4.4), and mitral valve cleft can also occur (作者: 全神貫注于 時間: 2025-3-26 23:31 作者: irreparable 時間: 2025-3-27 01:06
Radcliffe and the Spectral Scene of Reading,or is so small that the mitral valve motion and the transmitral flow is not disturbed (Figures 7.10, 11). The hemodynamic alterations of left ventricular filling when a myxoma is present depend on its size and whether it prolapses into the left ventricle or not. Doppler echocardiography can provide 作者: lethal 時間: 2025-3-27 06:49 作者: 輕快來事 時間: 2025-3-27 09:38
Michael N. Forster,Lina Steinerhree pulses for velocity evaluation. After obtaining data for one color scan line, the beam is steered to the next color scan line. To improve the color quality (velocity verification), it is necessary to enhance the autocorrelation by increasing the packet size. The packet size also affects the col作者: MIRTH 時間: 2025-3-27 14:22 作者: Crayon 時間: 2025-3-27 19:10 作者: 粗鄙的人 時間: 2025-3-28 01:16
Myocardial diseases,3,4). The Doppler method can indicate the presence, localization, and severity of an intraventricular obstruction by showing alterations in the ejection flow. With the apical approach, the pulsed Doppler echocardiogram shows highly aliased left ventricular outflow velocity at the level of the narrow作者: 四目在模仿 時間: 2025-3-28 02:05
Other cardiac diseases,or is so small that the mitral valve motion and the transmitral flow is not disturbed (Figures 7.10, 11). The hemodynamic alterations of left ventricular filling when a myxoma is present depend on its size and whether it prolapses into the left ventricle or not. Doppler echocardiography can provide 作者: ornithology 時間: 2025-3-28 10:05 作者: 胰臟 時間: 2025-3-28 12:49
Color coded Doppler flow mapping,hree pulses for velocity evaluation. After obtaining data for one color scan line, the beam is steered to the next color scan line. To improve the color quality (velocity verification), it is necessary to enhance the autocorrelation by increasing the packet size. The packet size also affects the col作者: 修飾語 時間: 2025-3-28 15:01
The basics of cardiac ultrasound,.e. .= ., where . is the velocity, . is the frequency of the sound, and λ is the wavelength. The wavelength and frequency, and hence the velocity, vary according to the medium in which the sound travels. Also, wavelength and frequency are related to each other — the higher the frequency, the shorter作者: curettage 時間: 2025-3-28 18:44 作者: critic 時間: 2025-3-29 02:37
Acquired valvular heart disease,h evaluation. Two-dimensional echocardiography provides anatomical findings that include: doming of the anterior mitral leaflet in the long axis view, and stenotic mitral orifice like the appearance of a fish mouth in the short axis view (Figure 3.1). The assessment of the mitral valve area can be o作者: MOAN 時間: 2025-3-29 04:32
Congenital heart disease,g to site of the defect. The three types are: (1) ostium secundum, (2) ostium primum and (3) sinus venosus. In clinical practice the secundum defect is the most common type of atrial septal defect which is located in the site of foramen ovale. Two-dimensional echocardiography can directly demonstrat作者: Phagocytes 時間: 2025-3-29 07:34 作者: Malleable 時間: 2025-3-29 13:45
Myocardial diseases, in the interventricular septum, and is usually called ’asymmetric septal hypertrophy’ (ASH) (Figures 6.1, 2). Hemodynamically, this disease can be divided into hypertrophic obstructive cardiomyopathy (HOCM) and hypertrophic non-obstructive cardiomyopathy. HOCM has a systolic pressure gradient betwe作者: infringe 時間: 2025-3-29 18:06 作者: maudtin 時間: 2025-3-29 22:27
