Patent US6285739B1 successfully refreshed from Google Patents.
US6285739B1
Expired / Lapsed
US
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Radiographic imaging apparatus and method for vascular interventions
Assignee: Research Foundation of the State University of New York
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Filing: 2000-02-18
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Granted: 2001-09-04
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Expires: 2020-02-18
Abstract
Abstract A radiographic imaging apparatus and method for vascular interventions for acquiring very high resolution radiographic images over a small region of interest (ROI). The apparatus and associated method employs digital solid state x-ray image detectors for the medical imaging application of angiography. A mechanical arrangement, for example an arm attached to an existing large area x-ray detector, allows the small area ROI digital detector to be temporarily positioned over a region located by the standard large area imager so that additional very high resolution digital images may be obtained over the ROI.
Inventors
- 👤 Stephen Rudin
- 👤 Daniel R. Bednarek
- 👤 Baruch B. Lieber
- 👤 Ajay Kumar Wakhloo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:15
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/504; A61B6/42; A61B6/4208; A61B6/4233; A61B6/48; A61B6/481
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
113 words
A radiographic imaging apparatus, comprising: an x-ray source irradiating an object to be inspected with x-rays; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element having an undivided converter material capable of receiving the x-rays which pass through the object to produce signals corresponding to the x-rays, the x-ray detector element converting the signals into a second digital output; wherein the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 2
Dependent Claim
113 words
A radiographic imaging apparatus, comprising: an x-ray source irradiating an object to be inspected with x-rays; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element having an undivided converter material capable of receiving the x-rays which pass through the object to produce signals corresponding to the x-rays, the x-ray detector element converting the signals into a second digital output; wherein the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 3
Dependent Claim
19 words
The radiographic imaging apparatus of claim 1 , wherein the fluoroscopic x-ray image detector comprises an image intensifier tube.
Claim 4
Dependent Claim
21 words
The radiographic imaging apparatus of claim 1 , wherein the fluoroscopic x-ray image detector comprises a direct conversion flat panel device.
Claim 5
Dependent Claim
21 words
The radiographic imaging apparatus of claim 1 , wherein the fluoroscopic x-ray image detector comprises an indirect conversion flat panel device.
Claim 6
Dependent Claim
20 words
The radiographic imaging apparatus of claim 1 , wherein the x-ray detector element is a direct conversion flat panel device.
Claim 7
Dependent Claim
20 words
The radiographic imaging apparatus of claim 1 , wherein the x-ray detector element is an indirect conversion flat panel device.
Claim 8
Dependent Claim
23 words
The radiographic imaging apparatus of claim 1 , wherein the x-ray detector element is a scintillator screen optically coupled to a CCD camera.
Claim 9
Dependent Claim
14 words
The radiographic imaging apparatus of claim 7 , wherein the scintillator screen comprises phosphor.
Claim 10
Dependent Claim
22 words
The radiographic imaging apparatus of claim 7 , further comprising a focusing element disposed between the scintillator screen and the CCD camera.
Claim 11
Dependent Claim
16 words
The radiographic imaging apparatus of claim 9 , wherein the focusing element is a fiberoptic reducer.
Claim 12
Dependent Claim
15 words
The radiographic imaging apparatus of claim 9 , wherein the focusing element is a lens.
Claim 13
Dependent Claim
114 words
A radiographic imaging apparatus, comprising: an x-ray source irradiating an object to be inspected with x-rays; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element capable of receiving the x-rays which pass through the object and converting the x-ray radiation into a second digital output; wherein the spatial resolution of the x-ray detector element is approximately 3 to 10 lp/mm and the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 14
Dependent Claim
114 words
A radiographic imaging apparatus, comprising: an x-ray source irradiating an object to be inspected with x-rays; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element capable of receiving the x-rays which pass through the object and converting the x-ray radiation into a second digital output; wherein the spatial resolution of the x-ray detector element is approximately 3 to 10 lp/mm and the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 15
Dependent Claim
146 words
A radiographic imaging apparatus, comprising: a frame; an x-ray source mounted on the frame and capable of irradiating an object placed in the apparatus; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element capable of receiving the x-rays which pass through the object and converting the x-ray radiation into a second digital output, the x-ray detector element retractably mounted to the frame such that it is capable of receiving the x-rays in a deployed position and such that it does not interfere with the fluoroscopic x-ray image detector in a stored position; wherein the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 16
Dependent Claim
146 words
A radiographic imaging apparatus, comprising: a frame; an x-ray source mounted on the frame and capable of irradiating an object placed in the apparatus; a fluoroscopic x-ray image detector capable of receiving the x-rays which pass through the object and converting the received x-rays into a first output; a display capable of picking up the first output; and, an x-ray detector element capable of receiving the x-rays which pass through the object and converting the x-ray radiation into a second digital output, the x-ray detector element retractably mounted to the frame such that it is capable of receiving the x-rays in a deployed position and such that it does not interfere with the fluoroscopic x-ray image detector in a stored position; wherein the x-ray detector element is capable of providing higher spatial resolution images of a region of interest detected by the fluoroscopic x-ray image detector.
Claim 17
Dependent Claim
19 words
The radiographic imaging apparatus of claim 13 , wherein the fluoroscopic x-ray image detector comprises an image intensifier tube.
Claim 18
Dependent Claim
21 words
The radiographic imaging apparatus of claim 13 , wherein the fluoroscopic x-ray image detector comprises a direct conversion flat panel device.
Claim 19
Dependent Claim
21 words
The radiographic imaging apparatus of claim 13 , wherein the fluoroscopic x-ray image detector comprises an indirect conversion flat panel device.
Claim 20
Dependent Claim
20 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is a direct conversion flat panel device.
Claim 21
Dependent Claim
20 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is an indirect conversion flat panel device.
Claim 22
Dependent Claim
23 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is a scintillator screen optically coupled to a CCD camera.
Claim 23
Dependent Claim
14 words
The radiographic imaging apparatus of claim 19 , wherein the scintillator screen comprises phosphor.
Claim 24
Dependent Claim
22 words
The radiographic imaging apparatus of claim 19 , further comprising a focusing element disposed between the scintillator screen and the CCD camera.
Claim 25
Dependent Claim
17 words
The radiographic imaging apparatus of claim 21 , wherein the focusing element is a fiber optic reducer.
Claim 26
Dependent Claim
15 words
The radiographic imaging apparatus of claim 21 , wherein the focusing element is a lens.
Claim 27
Dependent Claim
23 words
The radiographic imaging apparatus of claim 13 , wherein the spatial resolution of the x-ray image detector is approximately 3 to 10 lp/mm.
Claim 28
Dependent Claim
25 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is mounted on an arm that is rotatably attached to the frame.
Claim 29
Dependent Claim
25 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is mounted on an articulating arm that is attached to the frame.
Claim 30
Dependent Claim
25 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is slidably mounted on a rail that is attached to the frame.
Claim 31
Dependent Claim
25 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element is mounted on a support structure that is independent from the frame.
Claim 32
Dependent Claim
57 words
The radiographic imaging apparatus of claim 13 , wherein the x-ray detector element and the fluoroscopic x-ray image detector are mounted on a rotating turret attached to the frame such that the image detector and the x-ray detector element are capable of being rotated respectively into a position to receive the x-ray radiation from the x-ray source.
Claim 33
Dependent Claim
157 words
A radiographic imaging method, comprising the steps of: providing an x-ray source capable of irradiating an object; providing a fluoroscopic x-ray image detector capable of receiving the x-rays that pass through the object and converting the x-rays into a first output; placing an object between the x-ray source and the x-ray image detector; performing a procedure on the object with aid of radiographic imaging guidance from the fluoroscopic x-ray image detector; determining a region of interest within a field of view of the fluoroscopic x-ray image detector; providing an x-ray detector element having an undivided converter material capable of receiving the x-rays that pass through the object in the region of interest to produce signals corresponding to the x-rays, the x-ray detector element capable of converting the signals into a second digital output, the x-ray detector element having a higher spatial resolution than the x-ray image detector; and, viewing an image picked up from the second output.
Claim 34
Dependent Claim
157 words
A radiographic imaging method, comprising the steps of: providing an x-ray source capable of irradiating an object; providing a fluoroscopic x-ray image detector capable of receiving the x-rays that pass through the object and converting the x-rays into a first output; placing an object between the x-ray source and the x-ray image detector; performing a procedure on the object with aid of radiographic imaging guidance from the fluoroscopic x-ray image detector; determining a region of interest within a field of view of the fluoroscopic x-ray image detector; providing an x-ray detector element having an undivided converter material capable of receiving the x-rays that pass through the object in the region of interest to produce signals corresponding to the x-rays, the x-ray detector element capable of converting the signals into a second digital output, the x-ray detector element having a higher spatial resolution than the x-ray image detector; and, viewing an image picked up from the second output.
Claim 35
Dependent Claim
18 words
The method of claim 30 , wherein the fluoroscopic x-ray image detector is an x-ray image intensifier tube.
Claim 36
Dependent Claim
19 words
The method of claim 30 , wherein the fluoroscopic x-ray image detector is a direct conversion flat panel detector.
Claim 37
Dependent Claim
19 words
The method of claim 30 , wherein the fluoroscopic x-ray image detector is an indirect conversion flat panel detector.
Claim 38
Dependent Claim
18 words
The method of claim 30 , wherein the x-ray detector element is a direct conversion flat panel device.
Claim 39
Dependent Claim
18 words
The method of claim 30 , wherein the x-ray detector element is an indirect conversion flat panel device.
Claim 40
Dependent Claim
21 words
The method of claim 30 , wherein the x-ray detector element is a scintillator screen optically coupled to a CCD camera.
Claim 41
Dependent Claim
12 words
The method of claim 36 , wherein the scintillator screen comprises phosphor.
Claim 42
Independent Claim
120 words
A method for radiographic imaging, comprising the steps of; providing a flat panel x-ray image detector having an array of pixels with a size of 25-50 μm; electronically dividing the flat panel x-ray image detector into zones to establish a high resolution mode for region of interest viewing; binning the pixels to provide a large area mode for the x-ray image detector having an effective pixel size of at least 100 μm; and viewing an irradiated object in the large area mode of x-ray detection to detect a region of interest; switching the x-ray image detector to the high resolution mode in one of the zones; and, viewing the object in the region of interest in the high resolution mode.
Claim 43
Independent Claim
120 words
A method for radiographic imaging, comprising the steps of; providing a flat panel x-ray image detector having an array of pixels with a size of 25-50 μm; electronically dividing the flat panel x-ray image detector into zones to establish a high resolution mode for region of interest viewing; binning the pixels to provide a large area mode for the x-ray image detector having an effective pixel size of at least 100 μm; and viewing an irradiated object in the large area mode of x-ray detection to detect a region of interest; switching the x-ray image detector to the high resolution mode in one of the zones; and, viewing the object in the region of interest in the high resolution mode.
Claim 44
Dependent Claim
32 words
The method of claim 38 , further comprising the step of providing a display capable of displaying the large area field of view and the region of interest field of view simultaneously.
Claim 45
Dependent Claim
186 words
A radiographic imaging method, comprising the steps of: providing an x-ray source mounted on a frame and capable of irradiating an object; providing a fluoroscopic x-ray image detector capable of receiving the x-rays that pass through the object and converting the x-rays into a first output; placing an object between the x-ray source and the x-ray image detector; performing a procedure on the object with aid of radiographic imaging guidance from the fluoroscopic x-ray image detector; determining a region of interest within a field of view of the fluoroscopic x-ray image detector; providing an x-ray detector element capable of receiving the x-rays that pass through the object in the region of interest and capable of converting the x-rays into a second digital output, the x-ray detector element having a higher spatial resolution than the x-ray image detector, the x-ray detector element retractably mounted to the frame such that it is capable of receiving the x-rays in a deployed position and such that it does not interfere with the fluoroscopic x-ray image detector in a stored position; and, viewing an image picked up from the second output.
Claim 46
Dependent Claim
186 words
A radiographic imaging method, comprising the steps of: providing an x-ray source mounted on a frame and capable of irradiating an object; providing a fluoroscopic x-ray image detector capable of receiving the x-rays that pass through the object and converting the x-rays into a first output; placing an object between the x-ray source and the x-ray image detector; performing a procedure on the object with aid of radiographic imaging guidance from the fluoroscopic x-ray image detector; determining a region of interest within a field of view of the fluoroscopic x-ray image detector; providing an x-ray detector element capable of receiving the x-rays that pass through the object in the region of interest and capable of converting the x-rays into a second digital output, the x-ray detector element having a higher spatial resolution than the x-ray image detector, the x-ray detector element retractably mounted to the frame such that it is capable of receiving the x-rays in a deployed position and such that it does not interfere with the fluoroscopic x-ray image detector in a stored position; and, viewing an image picked up from the second output.
Claim 47
Dependent Claim
18 words
The method of claim 40 , wherein the fluoroscopic x-ray image detector is an x-ray image intensifier tube.
Claim 48
Dependent Claim
19 words
The method of claim 40 , wherein the fluoroscopic x-ray image detector is a direct conversion flat panel detector.
Claim 49
Dependent Claim
19 words
The method of claim 40 , wherein the fluoroscopic x-ray image detector is an indirect conversion flat panel detector.
Claim 50
Dependent Claim
18 words
The method of claim 40 , wherein the x-ray detector element is a direct conversion flat panel device.
Claim 51
Dependent Claim
18 words
The method of claim 40 , wherein the x-ray detector element is an indirect conversion flat panel device.
Claim 52
Dependent Claim
21 words
The method of claim 40 , wherein the x-ray detector element is a scintillator screen optically coupled to a CCD camera.
Claim 53
Dependent Claim
12 words
The method of claim 46 , wherein the scintillator screen comprises phosphor.
References Cited (Backward Citations)
US4142101B1
Cited
US4142101A
Cited
US4492119A
Cited
US5465284A
Cited
US5117446A
Cited
US5875226A
Cited
US5818053A
Cited
US5282236A
Cited
US5355309A
Cited
US5391879A
Cited
US5594253A
Cited
US5574764A
Cited
US5820623A
Cited
US5773832A
Cited
US5917883A
Cited
US5912943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-09-03 | 2005-03-05 | 2005-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-09-03 | 2009-03-05 | 2009-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-09-03 | 2013-03-05 | 2013-09-04 | $7700.00 | Window Closed / Lapsed |