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
Human Tissue Act 2004 since most surgeons would be unwilling to confront families in such situations. The Act prohibits selling organs. In 2007 a man became the first person convicted under the Act for trying to sell his kidney online for £24,000 in order to pay off his gambling debts. The Act does not extend to Scotland; its counterpart there is the Human Tissue (Scotland) Act 2006. The following orders have been made under this section: Human Tissue Act 2004 The Human Tissue Act 2004 (c 30) is an act of the UK parliament applying to England, Northern Ireland and Wales. It consolidates previous