Patent Number: 7,824,334

Title: Ultrasonograph and method and program for generating ultrasonotomographic image

Abstract: An ultrasonograph is provided with a frequency component adjuster that adjusts spatial frequency components of original image data RAW.sub.0 of an ultrasonotomographic image. The frequency component adjuster is constituted of an unsharp image data generator, a subtraction circuit, a weighting circuit, an integration circuit, a multiplication circuit and an addition circuit. The unsharp image data generator circuit generates unsharp image data RAW.sub.i (i=1 to 5) by reducing the spatial frequency components of the original image data RAW.sub.0 in five steps. The subtraction circuit generates differential image data .DELTA.RAW.sub.j (j=1 to 4) by subtracting the unsharp image data RAW.sub.1 from RAW.sub.i-1. The weighting circuit weights the differential image data .DELTA.RAW.sub.j by multiplying them by respective coefficients k.sub.j (-1<k.sub.j<1). The integration circuit integrates the differential image data .DELTA.RAW.sub.j to generate adjusted image data RAW_En. The addition circuit adds the adjusted image data RAW_En to the original image data RAW.sub.0 to generate output image data RAW_out.

Inventors: Sato; Yoshiaki (Kanagawa, JP)

Assignee: FUJIFILM Corporation

International Classification: A61B 8/00 (20060101)

Expiration Date: 2019-11-02 0:00:00