S. Tomazic

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We present a new Fast Frequency Selective Keyhole (FFSK) method, which allows dynamic acquisition of a low-resolution image signal from the arbitrarily chosen k-space points and reduces acquisition time of the conventional keyhole approach. Off-resonance components are eliminated by the filtering procedure which substantialy increase SNR. The effect of the(More)
A quick and automated method for quantitative spatial mapping of tissue characteristics derived from contrast enhanced MR imaging by a macromolecular contrast medium (MMCM) was used in normal rats. Specifically, an established two compartment unidirectional flow kinetic model was automatically implemented on a pixel by pixel basis to calculate permeability(More)
The residual noise of the sign algorithm can be reduced by adding a uniformly distributed noise (dithering) to the sign algorithm input signal. In this paper, a simple equation for the residual noise reduction factor (RNRF) is derived for the case in which the noise in the sign algorithm input signal has a two-level discrete amplitude distribution. It is(More)
One of many fiber nonlinear effects is a four-wave mixing (FWM) phenomenon that is resonant when the phase matching condition is satisfied. It only occurs for particular combinations of fiber dispersion and signal frequencies. In particular, phase matching is achieved for signals with very similar frequencies propagating near the zero dispersion wavelength(More)
An automated method for two-dimensional spatial depiction (mapping) of quantitative physiological tissue characteristics derived from contrast-enhanced MRI was applied to a model of inflammatory disease represented by antigen-induced arthritis of the temporomandibular joint in the rabbit. Specifically, an established two-compartment kinetic model of(More)
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