Ultrasonograph and method and program for generating...

Details Ultrasonograph and method and program for generating... Ultrasonograph and method and program for generating...

2005-12-21

2010-11-02

Le, Long V (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S407000

Reexamination Certificate

active

07824334

ABSTRACT:
An ultrasonograph is provided with a frequency component adjuster that adjusts spatial frequency components of original image data RAW0of 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 RAWi(i=1 to 5) by reducing the spatial frequency components of the original image data RAW0in five steps. The subtraction circuit generates differential image data ΔRAWj(j=1 to 4) by subtracting the unsharp image data RAW1from RAWi-1. The weighting circuit weights the differential image data ΔRAWjby multiplying them by respective coefficients kj(−1<kj<1). The integration circuit integrates the differential image data ΔRAWjto generate adjusted image data RAW_En. The addition circuit adds the adjusted image data RAW_En to the original image data RAW0to generate output image data RAW_out.

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Hiroya Ozawa, “Staging of Esophagus Cancer With Fine Probe Ultrasonic Endoscope”, Digestive Endoscope, vol. 14, No. 5, 2002, pp. 583-588.

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