Ultrasound system for automatically measuring fetal head size

Details Ultrasound system for automatically measuring fetal head size Ultrasound system for automatically measuring fetal head size

1996-03-29

1997-02-25

Jaworski, Francis

Surgery

Truss

Pad

12866105, A61B 800

Patent

active

056051557

ABSTRACT:
An ultrasound system automatically measures fetal head size from ultrasound images. An ultrasound image of the fetal head is detected. A radial maxima point is identified on each of a plurality of radii extending from a substantially common vertex point within the fetal head image. Each radial maxima point corresponds to an ultrasound sample along its corresponding radius, and has a maximum ultrasound echo strength. A first curve is defined from the radial maxima points. The remaining unfiltered radial maxima points are fit to a second curve, and the second curve is the detected curved boundary. The detected curve boundary is modified to define an initial fetal head boundary. An inner fetal head boundary and outer fetal head boundary are derived from the initial fetal head boundary and a predetermined fetal skull thickness, and fetal head size is computed from the inner fetal head boundary and the outer fetal head boundary.

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Matsopoulos, G. K. et al., "Use of Morphological Image Processing Techniques for the Measurement of a Fetal head from Ultrasound Images," Pattern Recognition, vol. 27, No. 10; 1994.
Lee et al., "MediaStation 5000: An Integrated Multimedia Video and Audio Processing System".

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