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US5227969A
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Manipulable three-dimensional projection imaging method
Assignee: W L Systems Inc
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Filing: 1991-05-23
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Granted: 1993-07-13
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Expires: 2011-05-23
Abstract
Abstract A method of developing a foreground image from two views of an object, such as orthogonal x-ray views, for the making of a projectable three-dimension image on a computer display monitor superimposed on a background image. The foreground image can be included on the original view of the object or can be separate therefrom or can be represented by digital mathematical expression. The method finds particular application in medical applications such as brachytherapy dosimetry, breast biopsy localizing, and external dosimetry computation for radiotherapy. When used with a dosimetry application, isodose lines can be computed and imaged for various simulated positioning and orientation of the radiation sources and simulated dose sizes.
Inventors
- 👤 Robert G. Waggener
- 👤 Jory Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:45
CPC Classifications
G; G06; G06T; G06T17/00; A; A61; A61N; A61N5/00; A61N5/10; A61N5/103; G16; G16H; G16H20/00; G16H20/40; G16H50/00; G16H50/50; A61B; A61B6/00; A61B6/52; A61B6/5211; A61B6/5229; A61B6/5247; A61N5/1001; A61N5/1027; G16H30/00; G16H30/20; G16H30/40
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
142 words
A method of creating a manipulable three-dimensional image of an object with respect to a background object, which comprises: digitizing a first planar view of a foreground object for memory storage, digitizing a second planar view of said foreground object for memory storage, digitizing first planar view of a background object for memory storage, digitizing a second planar view of said background object for memory storage, creating a three-dimensional data image of said foreground and said background objects from the digitized and stored first and second planar views of said objects, inputting scaling geometrical factors of the three-dimensional data images of said objects and adjusting the data images to scale the data images to each other, and displaying the data image of said background object and superimposing the data image of said foreground object on the data image of said background object.
Claim 2
Independent Claim
142 words
A method of creating a manipulable three-dimensional image of an object with respect to a background object, which comprises: digitizing a first planar view of a foreground object for memory storage, digitizing a second planar view of said foreground object for memory storage, digitizing first planar view of a background object for memory storage, digitizing a second planar view of said background object for memory storage, creating a three-dimensional data image of said foreground and said background objects from the digitized and stored first and second planar views of said objects, inputting scaling geometrical factors of the three-dimensional data images of said objects and adjusting the data images to scale the data images to each other, and displaying the data image of said background object and superimposing the data image of said foreground object on the data image of said background object.
Claim 3
Dependent Claim
19 words
The method in accordance with claim 1, wherein said first planar view is orthogonal with said second planar view.
Claim 4
Dependent Claim
26 words
The method in accordance with claim 1, wherein said background objective is a part of the human anatomy and said foreground object is an implant device.
Claim 5
Dependent Claim
40 words
The method in accordance with claim 3, wherein the part of the human anatomy is an image of the vaginal area and the implant device is a vaginal brachytherapy implant applicator suitable for receiving a plurality of radiation sources therein.
Claim 6
Dependent Claim
55 words
The method in accordance with claim 4, and including assigning radiation values for each of said radiation sources and predetermining therefor the resulting radiation at incremental locations on said vaginal area, whereby said implant applicator is manipulated and said values for each of said radiation sources are reassigned until the optimal dose treatment is determined.
Claim 7
Dependent Claim
34 words
The method in accordance with claim 1, wherein said background object is an image of the breast area of the human anatomy and said foreground object includes a breast compression device and biopsy needle.
Claim 8
Dependent Claim
18 words
The method in accordance with claim 1, wherein said background object includes at least two different fiducial representations.
Claim 9
Dependent Claim
22 words
The method in accordance with claim 7, wherein said two different representations are an X-ray representation and a magnetic resonance imaging representation.
Claim 10
Dependent Claim
19 words
The method in accordance with claim 1, wherein the data images are scaled to each other before being displayed.
Claim 11
Dependent Claim
44 words
The method in accordance with claim 1, and including manipulating the data image of said foreground object with respect to the data image of said background object by either rotating or translating, or by rotating and translating, the data image of said foreground object.
Claim 12
Dependent Claim
31 words
The method in accordance with claim 1, wherein said foreground object includes a radiation source and is implantable in the body of a patient and said background object is a patient.
Claim 13
Dependent Claim
26 words
The method in accordance with claim 11, and including calculating isodose curves for determining the distribution of the radiation dosage delivered by the implanted radiation source.
Claim 14
Independent Claim
234 words
A method of determining the distribution of radiation dosage delivered by a radiation source implanted in the body of a patient comprising the steps of digitizing a first planar view of an image of a treatment field of a patient receiving radiation treatment and having an applicator including a radiation source implanted therein, digitizing a second planar view of the treatment field including the applicator, digitizing a first planar view of the applicator, digitizing a second planar view of the applicator, generating a three-dimensional coordinate system for a data image of the applicator, creating the three-dimensional data image of the applicator and a three-dimensional data image of the treatment field from the digitized first and second planar views of the applicator and the treatment field, displaying the three-dimensional data images of the applicator and the treatment field, the data image of the treatment field being displayed in the background and the data image of the applicator being displayed in the foreground, manipulating the data image of the applicator to scale the data image of the applicator for aligning the data image of the applicator onto the data image of the applicator implanted in the treatment field, thereby superimposing the coordinate system on the treatment field, and specifying a plurality of locations in the coordinate system and calculating the radiation dosage at each location from a radiation source having a selected size in the applicator.
Claim 15
Independent Claim
234 words
A method of determining the distribution of radiation dosage delivered by a radiation source implanted in the body of a patient comprising the steps of digitizing a first planar view of an image of a treatment field of a patient receiving radiation treatment and having an applicator including a radiation source implanted therein, digitizing a second planar view of the treatment field including the applicator, digitizing a first planar view of the applicator, digitizing a second planar view of the applicator, generating a three-dimensional coordinate system for a data image of the applicator, creating the three-dimensional data image of the applicator and a three-dimensional data image of the treatment field from the digitized first and second planar views of the applicator and the treatment field, displaying the three-dimensional data images of the applicator and the treatment field, the data image of the treatment field being displayed in the background and the data image of the applicator being displayed in the foreground, manipulating the data image of the applicator to scale the data image of the applicator for aligning the data image of the applicator onto the data image of the applicator implanted in the treatment field, thereby superimposing the coordinate system on the treatment field, and specifying a plurality of locations in the coordinate system and calculating the radiation dosage at each location from a radiation source having a selected size in the applicator.
Claim 16
Dependent Claim
29 words
The method in accordance with claim 13, and including calculating isodose curves for determining the distribution of the radiation dosage delivered in the treatment field by the implanted applicator.
Claim 17
Dependent Claim
30 words
The method in accordance with claim 13, wherein the first and second planar views of the applicator and the first and second planar views of the treatment field are orthogonal.
Claim 18
Dependent Claim
20 words
The method in accordance with claim 13, wherein the first and second images of the treatment field are X-ray films.
Claim 19
Dependent Claim
35 words
The method in accordance with claim 13, wherein the data image of the applicator is manipulated to be aligned with the data image of the applicator implanted in the treatment field in two orthogonal views.
Claim 20
Dependent Claim
29 words
The method in accordance with claim 13, wherein the step of manipulating the three-dimensional data images is accomplished by calculation using the geometrical scaling factors pertaining to the applicator.
Claim 21
Dependent Claim
44 words
The method in accordance with claim 13, and including superimposing a computer generated image of a device used in radiation therapy other than the applicator on the image of the treatment field and computing the radiation dosages resulting from the use of the device.
Claim 22
Dependent Claim
25 words
The method in accordance with claim 13, wherein the first and second images of the treatment field are magnetic resonance images of the treatment field.
Claim 23
Dependent Claim
33 words
The method in accordance with claim 13, and including inputting data regarding the size of the radiation source and individual source positions in the applicator before calculating the radiation dosage of each location.
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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) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |