Resolution measuring device for acoustical imaging systems and m

Details Resolution measuring device for acoustical imaging systems and m Resolution measuring device for acoustical imaging systems and m

1981-08-05

1983-11-29

Apley, Richard J.

Surgery

Truss

Pad

128661, A61B 1000

Patent

active

044175825

ABSTRACT:
Ultrasound imaging systems such as those utilized in breast scanning and diagnosis require not only periodic maintenance but also evaluation of the resolution and depth of field capability so as to provide maximum information to the clinician utilizing the system. The resolution measuring device preferred incorporates helically contorted filaments physically arranged to intersect at a point thereby forming a known gradient of divergence. Measurement of the translational distance from the intersection point to the point of resolution of imaged lines will, with knowledge of the gradient, permit facile determination of the separation distance which corresponds to the resolution of the ultrasound imaging system.

REFERENCES:
patent: 3152243 (1964-10-01), Andrews
patent: 3461274 (1969-08-01), Williams
patent: 4327738 (1982-05-01), Green et al.

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