心音图

心音图有下列特点：（1）心房音（Sa）与房扑波（F）密切相关，F&Sa间期为0.19秒；

The features of phonocardiogram were as follows : ( 1 ) There is a close relationship between Sa and F wave . F-Sa interval is 0.19 second .

目的本文介绍一种在心音图（PCG）中定位第一心音（S1）和第二心音（S2）的算法。

Objective An algorithm located the first sound ( S 1 ) and the second sound ( S 2 ) on phonocardiogram ( PCG ) was introduced .

目的：探讨心音图运动试验（PCGET）评估心肌收缩力及心力储备的价值。

Objective : Explore the value of phonocardiogram exercise test ( PCGET ) to evaluating cardiac contractility .

用小波变换时频分析方法，研究了135例（正常少儿34例、正常成年人31例、正常老年人30例和冠心病老年人40例）心音图中的S3。

Using wavelet transform time-frequency method , the S3 in 135 phonocardiograms ( 34 normal pioneer ? 31 normal adults ? 30 normal aged ? 40 old subjects with coronary heart diseases ) were statistically analyzed .

本文通过心阻抗图，心音图及心电图法对高血压患者的心房收缩时间间期（ASTI）进行了研究。

Atrial systolic time intervals ( ASTI ) measured by cardiac impedance plethysmogram , phonocardiogram and electrocardiogram were studied in control and hypertensive subjects .

目的研究心音图运动试验的心脏储备指数（CRI）与X线左心室造影射血分数（EF）量化纽约心功能分级的相关性。

Objective to study the correlation of cardiac reserve index ( CRI ) obtained from phonocardiogram exercise test ( PCGET ) and ejection fraction ( EF ) measured by left ventricular x-ray contrast examination for quantifying heart function classification .

心音图运动试验（PCGET）是新近提出的一项心肌收缩能力以及心血管病人和健康人的心力储备评估方法。

Phonocardiogram exercise testing ( PCGET ) is a recently developed method for evaluating cardiac contractility and the cardiac reserve in patients with heart disease or in healthy subjects .

心音图运动试验的精密度和准确度的分析

An Analysis of Precision and Accuracy of the Phonocardiogram Exercise Test

心音图运动试验中的信噪比分析

An Analysis of S / N Ratio of the Phonocardiogram Exercise Test

微机三维心音图与杂音谱分析

Microcomputer three dimensional phonocardiogram and spectral analysis of heart murmurs

100例起搏器安置前、后心音图的对比研究

A Comparative Study of Phonocardiogram in 100 Patients Before and After Pacemaker Implantation

彩色和脉冲多普勒、心音图及听诊对瓣膜返流的诊断价值

Diagnostic value of color doppler , pulsed doppler , phonocardiography and auscultation for valvular regurgitation

心音图第三、四心音与左心室功能客观测值的关系

Association between phonocardiographic third and fourth heart sounds and objective measures of left ventricular function

心音图运动试验量化心功能分级的研究

Phonocardiogram exercise test and cardiac function classification

时／频域三维心音图

Time / frequency domain 3D phonocardiograms

电子心音图检查将心脏听诊形象化，提高了心脏疾病的诊断和鉴别水平。

Phonocardiograms ( PCGs ) visualize cardiac auscultation , and improve the diagnosis level if cardiovascular diseases .

可以辅助诊断部分心律失常问题，判定临床心音图是否正常。

Some arrhythmia problems could be diagnosed and clinical PCG could be diagnosed whether it is normal .

加速型心音图微音器

Acceleration type phonocardiogram microphon

目的用数字心音图探索运动和呼吸对心率及心音幅值的影响。

Objective To study the effect of exercise and breathing on heart rate and amplitude of heart sound using digital phonocardiogram .

经小波变换的三维心音图更为直观详尽地反映出各组心音信号在不同时域、频域与强度范围内细节性的信息。

The three-dimensional phonocardiogram after wavelet analyzing could describe all the information of frequency domain , time domain and amplitude domain perfectly .

本文报告经心音图证实的收缩期喀喇音82例，经超声心动图证实绝大多数（82%）伴有二尖瓣脱垂。

The paper reported 82 cases with systolic click prored by phonocardiogram ( PCG ), most of them associated with mitral prolapse proved by echocardiogram .

心音图含有大量关于心脏功能的生理病理信息，因此对心音信号的有效诊断，有利于提高心血管疾病的诊治水平。

Phonocardiogram contains a lot of information on the physiological and pathological cardiac function , so it can improve the diagnosis and treatment of cardiovascular disease to effectively diagnose cardiac sounds .

本文应用多普勒技术（彩色多普勒血流显像联合应用脉冲多普勒），体表心音图和临床听诊技术、对于二尖瓣、三尖瓣和主动脉瓣返流患者的检出率进行了对照研究。

To evaluate the sensitivities of combined color Doppler and pulsed Doppler , surface phonocardiography and auscultation in diagnosing valvular regurgitation , 115 patients including mitral , tricuspid and aortic valvular insufficiency were studied .

测定587例缺血性心脏病患者心音图上的第四心音（S＿4），发现S＿4的检出率为77.17%。

The fourth heart sound ( S_4 ) was studied on 587 cases of ischemic heart disease by phonocardiography . The results showed that S_4 was found in 453 patients ( 77 . 17 % ) .

通过考查几种时频分析得到的心音信号谱图和包络的性能，说明S变换是心音分析的有效方法。

The review on the performance of spectrogram and envelope from several time-frequency analyses shows S Transform is an efficient method in heart sound analysis .

在心音分析方法上，从以前模拟心音图上进行的时域分析、频域分析、功率谱分析发展为时频分析。

At heart sound analytical method , it has time analysis , frequently analysis , and the power spectrum analysis previously . And now it goes into the time-frequency analysis .

心音信号蕴含了大量的心脏信息，心音图能反映心脏的早期病变信息，因此心音检测具有心电检测不可替代的优势和临床价值。

Heart sound signal contains plenty of heart information ; phonocardiogram can reflect the early lesions information of cardiac . Therefore the heart sound detection has the irreplaceable advantages and clinical value , which cannot be replaced by ECG .

研究发现第一心音的幅值是心肌收缩力的标准量度，因此可以用心音图来对心肌收缩能力进行评估。

It has been discovered in previous research that the phonocardiogram can be used for cardiac performance assessment since the amplitude of S1 is the standard measure for myocardium contractility force .