US5020085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray image processing device
Assignee: Panasonic Holdings Corp
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Filing: 1990-04-18
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Granted: 1991-05-28
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Expires: 2010-04-18
Abstract
Abstract An X-ray image processing device using dual energy projection radiography method, wherein the low energy image and the high energy image are subjected to a subtraction processing to output a first image such as bone X-ray image, and the first image and the low energy image are subjected to another subtraction to output a second image such as a soft tissue X-ray image without deterioration of the X-ray image.
Inventors
- 👤 Toshiyuki Kawara
- 👤 Hiroshi Tsutsui
- 👤 Hiromasa Funakoshi
- 👤 Yoshiyuki Yoshizumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:14
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; A61B6/40; A61B6/4035; A61B6/48; A61B6/482; G; G06; G06T; G06T5/00; G06T5/50; H; H04; H04N; H04N5/00; H04N5/30; H04N5/32; H04N5/3205
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
An x-ray image processing device comprising; means for obtaining low energy image information which is logarithmic conversion image information of a penetration image of an object radiated by low energy X-ray, means for obtaining high energy image information which is logarithmic conversion image information of a penetration image of an object radiated by high energy X-ray, means for subtracting the low energy image information and the high energy image information to output a first image, and means for subtracting the first image and the low energy image information to output a second image.
Claim 2
Dependent Claim
93 words
An x-ray image processing device comprising; means for obtaining low energy image information which is logarithmic conversion image information of a penetration image of an object radiated by low energy X-ray, means for obtaining high energy image information which is logarithmic conversion image information of a penetration image of an object radiated by high energy X-ray, means for subtracting the low energy image information and the high energy image information to output a first image, and means for subtracting the first image and the low energy image information to output a second image.
Claim 3
Dependent Claim
132 words
An x-ray image processing device comprising; means for obtaining low energy image information which is logarithmic conversion image information of a penetration image of an object radiated by low energy X-ray, means for obtaining high energy image information which is logarithmic conversion image information of a penetration image of an object radiated by high energy X-ray, means for subtracting the low energy image information and the high energy image information to output a first image, means for suppressing high frequency component of the first image to output a high frequency suppressed image, means for enhancing high frequency component of the low energy image information to output a high frequency enhanced image, and means for subtracting between the high frequency suppressed image and the high frequency enhanced image to output a second image.
Claim 4
Dependent Claim
132 words
An x-ray image processing device comprising; means for obtaining low energy image information which is logarithmic conversion image information of a penetration image of an object radiated by low energy X-ray, means for obtaining high energy image information which is logarithmic conversion image information of a penetration image of an object radiated by high energy X-ray, means for subtracting the low energy image information and the high energy image information to output a first image, means for suppressing high frequency component of the first image to output a high frequency suppressed image, means for enhancing high frequency component of the low energy image information to output a high frequency enhanced image, and means for subtracting between the high frequency suppressed image and the high frequency enhanced image to output a second image.
Claim 5
Dependent Claim
52 words
The X-ray image processing device according to claim 1, wherein said device further comprises; means for suppressing high frequency component of the first image to output a high frequency suppressed image, and means for subtracting between the high frequency suppressed image and the low energy image information to output the second image.
Claim 6
Dependent Claim
52 words
The X-ray image processing device according to claim 1, wherein said device further comprises; means for enhancing high frequency component of the low energy image information to output a high frequency enhanced image, and means for subtracting between the high frequency enhanced image and the first image to output the second image.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |