US4655716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contoured mammography phantom with skin
Assignee: Xerox Corp
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Filing: 1985-08-30
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Granted: 1987-04-07
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Expires: 2005-08-30
Abstract
Abstract A phantom formed of a non-biological material into the shape of a breast, said material having radiation characteristics of breast tissue, for use by medical personnel while in training to interpret mammographs, and as a tool to assess the quality of a radiological imaging system. The phantom material comprises one epoxy resin based tissue substitute which simulates the breast tissue, and another which simulates the skin tissue. A slot is formed in the phantom into which targets for simulating breast masses, fibers and calcifications can be placed.
Inventors
- 👤 Marilyn K. Hoevel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:11
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/58; A61B6/582; A61B6/583; A61B6/50; A61B6/502; G; G09; G09B; G09B23/00; G09B23/28; G09B23/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
A breast phantom comprising: a first non-biological tissue substitute having radiographic properties of breast tissue, shaped in the size and contour of an actual breast slightly flattened and positioned for a mammograph, and a second non-biological tissue substitute having radiographic properties of skin tissue, of a thickness representative of the skin of a breast, covering said first tissue substitute, and wherein, within said first tissue substitute is formed a target slot into which targets for simulating various sizes, shapes and types of breast masses, fibers and calcifications can be placed.
Claim 2
Dependent Claim
90 words
A breast phantom comprising: a first non-biological tissue substitute having radiographic properties of breast tissue, shaped in the size and contour of an actual breast slightly flattened and positioned for a mammograph, and a second non-biological tissue substitute having radiographic properties of skin tissue, of a thickness representative of the skin of a breast, covering said first tissue substitute, and wherein, within said first tissue substitute is formed a target slot into which targets for simulating various sizes, shapes and types of breast masses, fibers and calcifications can be placed.
Claim 3
Dependent Claim
13 words
The phantom of claim 1 wherein said tissue substitutes are epoxy resin based.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |