Automated function imaging (AFI) was recently introduced which reflect systolic LV function, based on 2D-STE imaging by assessment of global LV longitudinal strain
Our experimental data in reverse creep tests at the zero stress (with a duration of 1 hour) show that the longitudinal strain
decreases with time (following a stretched exponential dependence) and tends to its limiting value, which is about 80% to 85% of the strain measured at the instant when the stress becomes equal to zero.
Calismamizda da hastalik suresi ile longitudinal strain
pik S ile longitudinal SR pik E degerlerinde anlamli bir korelasyon bulunmustur.
For specimens not subjected to thermal treatment, the growth of longitudinal strain
does not affect the volume fraction of active MRs and the attempt rate for detachment of chains from their junctions.
Using direct strain analysis of papillary muscles, the average value of peak systolic longitudinal strain
for each papillary muscle was determined.
where [epsilon] = [lambda] - 1 is the longitudinal strain
for a chain, [epsilon] = 1/2 (C-I) is the relative Cauchy strain tensor for the network, I is the unit tensor and [epsilon](t) is the strain tensor for transition from the stress-free state of the network to its deformed state at time t.
However, in that study, measurements were taken differently via average global longitudinal strain
and strain rate imaging techniques.
The longitudinal strain
was measured with the above mentioned experimental method.
hizi ile yapilan bir calismada, bolgesei duvar hareketlerini degerlendirmede deformasyon indekslerinin konvansiyonel (B- mod ve anatomik M-mod ekokardiyografi) ultrason tekniklerine ve doku Doppler velositelerine gore daha iyi oldugu gosterilmistir (17).
Substituting [[sigma].sub.1] = [[sigma].sub.h], [[sigma].sub.2] = [[sigma].sub.i], [[sigma].sub.3] = [[sigma].sub.r] into Eq 8[alpha] and noting that the longitudinal strain
rate [[epsilon].sub.l] is close to zero, the circumferential strain rate is
Benek takibi teknigi ile yapilan sirkumferansiyel strain ve longitudinal strain
ile dissenkroni analizleri ise KRT'ye cevabi ongormede radiyal strain kadar tutarli sonuclar vermemistir (30, 35).
For uniaxial tension tests, a nonlinear equation given the relation between longitudinal strain
, [[varepsilon].sub.1] and transverse strain, [[varepsilon].sub.2] is derived.