Results 241 to 250 of about 1,127,144 (297)

Interaction between reflected shock waves and laser-induced cavitation bubbles. [PDF]

open access: yesUltrason Sonochem
Dawoodian M   +6 more
europepmc   +1 more source

Complex multi-echo fMRI dataset: New strategies in processing of multi-echo data. [PDF]

open access: yesSci Data
Mikl M   +6 more
europepmc   +1 more source

Ventricular ‘Echoes’

American Journal of Physiology-Legacy Content, 1958
In dogs anesthetized with pentobarbital, with the heart denervated; the adrenals ligated, and the S.A. node crushed, stimuli were applied to the ventricle. Whenever the V-A delay lengthens sufficiently there is an additional ventricular impulse that returns from the auricle; these impulses are designated as ‘echoes.’ If the stimulated ventricular ...
openaire   +2 more sources

Spin-echo versus gradient-echo fMRI with short echo times

Magnetic Resonance Imaging, 2001
Blood-oxygen level dependent signal changes in the visual cortex were investigated as a function of echo time with spin-echo and gradient-echo EPI at 1.5 T and 3 T. The linear relationship between the fractional signal change and the echo time was apparent in all cases.
Stroman, P.   +4 more
openaire   +3 more sources

Spin Echoes

Physics Today, 1950
An ensemble of nuclear magnetic moments which freely precesses in phase in a large magnetic field at a given Larmor frequency will provide a nuclear induction signal.
openaire   +1 more source

Echo‐planar spin‐echo and inversion pulses

Magnetic Resonance in Medicine, 1993
AbstractThe echo‐planar k‐space trajectory can be used as the basis for any two‐dimensional selective pulse. The main application is spectral‐spatial pulses, which must be based on the echoplanar trajectory. In this paper we show how echo‐planar spinecho (EPSE) pulses may be designed.
J, Pauly, D, Spielman, A, Macovski
openaire   +2 more sources

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