annular velocity การใช้

• Annular velocities summarises the longitudinal contraction of the ventricle during systole, and elongation during diastole.
• For this article, annular velocity is described, as used in drilling fluid applications in the oil exploration industry.
• The method measures annular velocities to and from the probe during the heart cycle . "'Single spectral tissue velocity curve from the mitral annulus . "'
• "' Annular velocity "'is the speed of a fluid's movement in a column called an annulus in wells being drilled with circulating drilling fluid.
• Another parameter to assess diastolic function is the, which is the ratio of mitral peak velocity of early filling ( E ) to early diastolic mitral annular velocity ( E').
• Annular velocity is often abbreviated as AV, though this is not exclusively so, as AV also refers to apparent viscosity which is calculated from rheometer readings from tests that the mud engineer performs.