Tissue Doppler echocardiography Tissue Doppler echocardiography Tissue Doppler echocardiography (TDE) is a medical ultrasound technology, specifically a form of echocardiography that measures the velocity of the heart muscle (myocardium) through the phases of one or more heartbeats by the Doppler effect (frequency shift) of the reflected ultrasound. The technique is the same as for flow Doppler echocardiography measuring flow velocities. Tissue signals, however, have higher amplitude and lower velocities, and the signals are extracted by using different filter and gain settings. The terms tissue Doppler imaging (TDI) and tissue velocity imaging (TVI) are usually synonymous with TDE because echocardiography is the main use
Sociology of the body such as anorexia and bulimia, and on the other end, there is a growing epidemic of obesity, especially in the US. Both ideals have increased widely over the last few decades due in part to growing mass media coverage in which there are norms within society and the always growing pressure to either look and feel a certain way. Sociology of the body Sociology of the body is a branch of sociology studying the representations and social uses of the human body in modern societies. According to Thomas Laqueur, prior to the eighteenth century the predominant model for a social