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 Authority the HTA authority over exhumed remains from archaeological sites. The Act governs England, Wales and Northern Ireland. There is separate legislation in Scotland, the Human Tissue (Scotland) Act 2006 and the Authority performs certain tasks on behalf of the Scottish Government (approval of living donation and licensing of establishments storing tissue for human application). The Authority consists of a Chair and eleven Members. Nine members have been appointed by the Secretary of State for Health, one appointed by the Welsh Government, and one member is appointed by the Department of Health, Social Services and Public Safety in Northern Ireland. The