Patent US5752916A successfully refreshed from Google Patents.
US5752916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining, in nuclear medicine, a truncation-corrected image of a patient's body
Assignee: SMV International
•
Filing: 1996-06-27
•
Granted: 1998-05-19
•
Expires: 2016-06-27
Abstract
Abstract A method in nuclear medicine of obtaining a truncation-corrected image of a patient's body, according to which the patient's body is placed on a bed of a nuclear medicine machine including at least one detector head equipped with a detection surface of nuclear rays; a first truncated image in projection of the patient's body is acquired; a second image in projection of the patient's body at an angular position of the first truncated image in projection is acquired. An item of information from the second image is introduced in the first image (P1) with a view to correcting it in its truncated part. The invention applies, in particular, to tomographic examinations.
Inventors
- 👤 Bruno Guerard
- 👤 Stephane Papillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:20
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/161; G01T1/1611; A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/037; G01T1/164; G01T1/1641; G01T1/1648; G01T1/29; G01T1/2914; G01T1/2985; G06; G06T; G06T12/00; G06T12/10; G06T2211/00; G06T2211/40; G06T2211/432
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
131 words
Method of obtaining, in nuclear medicine, an image of a patient's body, said method comprising: placing the patient's body on a bed of a nuclear medicine machine, said machine including at least one detector head equipped with a detection surface of nuclear rays; acquiring a first, truncated image in projection of the patient's body, said first image having a truncated part and being acquired at a first angular position with respect to the patient's body; acquiring a second image in projection of the patient's body, said second image being acquired at a second angular position, close to first angular position of the first image; and, wherein an item of information from said second image is introduced in said first image in order to complete the truncated part of said first image.
Claim 2
Dependent Claim
131 words
Method of obtaining, in nuclear medicine, an image of a patient's body, said method comprising: placing the patient's body on a bed of a nuclear medicine machine, said machine including at least one detector head equipped with a detection surface of nuclear rays; acquiring a first, truncated image in projection of the patient's body, said first image having a truncated part and being acquired at a first angular position with respect to the patient's body; acquiring a second image in projection of the patient's body, said second image being acquired at a second angular position, close to first angular position of the first image; and, wherein an item of information from said second image is introduced in said first image in order to complete the truncated part of said first image.
Claim 3
Dependent Claim
38 words
Method according to claim 1, wherein the second image is truncated, and wherein an item of information from the first image is introduced in the second image in order to complete the truncated part of the second image.
Claim 4
Dependent Claim
38 words
Method according to claim 1, wherein an angle α between a normal to the detection surface at said first angular position and a normal to the detection surface at said second angular position is less than approximately 10°.
Claim 5
Dependent Claim
35 words
Method according to claim 1, wherein the first image comprises an image of an edge of the patient's body, and wherein the second image comprises an image of an opposite edge of the patient's body.
Claim 6
Dependent Claim
27 words
Method according to claim 1, wherein a continuity is imposed between the information introduced in the truncated part of a projection and information acquired in said projection.
Claim 7
Dependent Claim
26 words
Method according to claim 1, further comprising obtaining a reconstructed tomographic image by acquiring images in projection of the patient's body taken from different angles α(i).
Claim 8
Dependent Claim
12 words
Method according to claim 1, wherein the images are acquired in emission.
Claim 9
Dependent Claim
12 words
Method according to claim 1, wherein the images are acquired in transmission.
Claim 10
Dependent Claim
15 words
Method according to claim 1, wherein the first and second images are acquired in tomography.
Claim 11
Dependent Claim
14 words
Method according claim 9, wherein, the tomography is a cardiac tomography with attenuation correction.
Claim 12
Dependent Claim
34 words
Method according to claim 9, wherein, prior to the tomographic examination, the detector head is placed in a position making it possible to determine the dimensions of the patient's body and its center C.
Claim 13
Dependent Claim
20 words
Method according to claim 11, wherein the first and second images are acquired without truncating a heart of the patient.
Claim 14
Dependent Claim
38 words
Method according to claim 9, wherein p of n images in projection are acquired according to a first trajectory of the detecting surface, and n-p other images are acquired according to a second trajectory of said detector surface.
Claim 15
Dependent Claim
30 words
Method according to claim 13, wherein the first trajectory comprises an inner edge of the field of detection of the detector head and follows the edges of the patient's body.
Claim 16
Dependent Claim
29 words
Method according to claim 13, wherein the second trajectory comprises an edge of the field of detection opposite the inner edge and follows the edges of the patient's body.
Claim 17
Independent Claim
138 words
A method of obtaining an image of a patient's body, comprising the steps of: placing the patient's body on a bed of a machine; acquiring a first image in nuclear projection of the patient's body, said first image being acquired at a first angular position with respect to the patient's body and having a truncated part so as not to encompass an entire cross-section of the patient's body, acquiring a second image in nuclear projection of the patient's body, said second image being acquired at a second angular position with respect to the patient's body and encompassing a portion of the cross-section of the patient's body that is truncated from the first image, and introducing an item of information from said second image into said first image so as to complete the truncated part of said first image.
Claim 18
Independent Claim
138 words
A method of obtaining an image of a patient's body, comprising the steps of: placing the patient's body on a bed of a machine; acquiring a first image in nuclear projection of the patient's body, said first image being acquired at a first angular position with respect to the patient's body and having a truncated part so as not to encompass an entire cross-section of the patient's body, acquiring a second image in nuclear projection of the patient's body, said second image being acquired at a second angular position with respect to the patient's body and encompassing a portion of the cross-section of the patient's body that is truncated from the first image, and introducing an item of information from said second image into said first image so as to complete the truncated part of said first image.
Claim 19
Dependent Claim
27 words
A method as defined in claim 16, wherein the second image has a truncated part so as not to encompass the entire cross-section of the patient's body.
Claim 20
Dependent Claim
25 words
A method as defined in claim 17, wherein the truncated part of the second image does not overlap the truncated part of the first image.
Claim 21
Dependent Claim
44 words
A method as defined in claim 18, wherein the truncated part of the first image includes a first edge of the patient's body and the truncated part of the second image includes a second edge of the patient's body disposed opposite said first edge.
Claim 22
Dependent Claim
20 words
A method as defined in claim 16, wherein said first and second images are acquired by the same detector head.
Claim 23
Independent Claim
200 words
A method of obtaining an image of a patient's body, comprising the steps of: placing the patient's body on a bed of a machine, said machine including a detector head equipped with a detection surface for detecting nuclear rays; setting said detector head at a location in which the detector surface is disposed at first angular position with respect to the patient's body; while said detector surface of said detector head is in said first angular position, acquiring a first image in projection of the patient's body, said first image having a truncated part so as not to encompass an entire cross-section of the patient's body, moving said detector head to a location in which the detector surface is disposed at a second angular position with respect to the patient's body, while said detector surface of said detector head is in said second angular position, acquiring a second image in projection of the patient's body, said second image encompassing a portion of the cross-section of the patient's body that is truncated from the first image, and introducing an item of information from said second image into said first image so as to complete the truncated part of said first image.
Claim 24
Independent Claim
200 words
A method of obtaining an image of a patient's body, comprising the steps of: placing the patient's body on a bed of a machine, said machine including a detector head equipped with a detection surface for detecting nuclear rays; setting said detector head at a location in which the detector surface is disposed at first angular position with respect to the patient's body; while said detector surface of said detector head is in said first angular position, acquiring a first image in projection of the patient's body, said first image having a truncated part so as not to encompass an entire cross-section of the patient's body, moving said detector head to a location in which the detector surface is disposed at a second angular position with respect to the patient's body, while said detector surface of said detector head is in said second angular position, acquiring a second image in projection of the patient's body, said second image encompassing a portion of the cross-section of the patient's body that is truncated from the first image, and introducing an item of information from said second image into said first image so as to complete the truncated part of said first image.
References Cited (Backward Citations)
US3970853A
Cited
GB2083970A
Cited
US4618772A
Cited
EP0200939A1
Cited
US4782233A
Cited
US5421330A
Cited
US5594251A
Cited
US5457724A
Cited
US5565684A
Cited
US5672877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-18 | 2001-11-17 | 2002-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-18 | 2005-11-17 | 2006-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-18 | 2009-11-17 | 2010-05-19 | $7700.00 | Window Closed / Lapsed |