초록 ▼

An X-ray image data of a patient into which an X-ray contrast medium is being administered is processed in an X-ray image data processing apparatus so as to obtain the X-ray image data having an improved S/N ratio. The processing apparatus mainly comprises a linear differential filter that is compos

An X-ray image data of a patient into which an X-ray contrast medium is being administered is processed in an X-ray image data processing apparatus so as to obtain the X-ray image data having an improved S/N ratio. The processing apparatus mainly comprises a linear differential filter that is composed of a plurality of multipliers and an adder. The X-ray image data is multiplied by a plurality of differential coefficients, and thereafter the results of these multiplications are summed.

대표청구항 ▼

An apparatus for generating a processed video signal representative of an image of an object over a series of successive observation times, comprising: a source of radiation directable at said object; means for converting radiation passing through said object into an electric video signal having suc

An apparatus for generating a processed video signal representative of an image of an object over a series of successive observation times, comprising: a source of radiation directable at said object; means for converting radiation passing through said object into an electric video signal having successive frames; means for storing a series of said successive frames of said video signal; means for multiplying, for each observation time, each of said successive stored frames by a differential filter coefficient, with the value of said coefficient for each frame being a function of the relationship between the time that frame occurred and said observation times; and means for combining said multiplied frames, for each observation time, to produce said processed video signal.