Title:
METHOD OF RECONSTRUCTING A HIGH-RESOLUTION 3D IMAGE
Document Type and Number:
WIPO Patent Application WO2002103639
Kind Code:
A3
Abstract:
The invention relates to a method of reconstructing a high-resolution 3D image (G) of an examination zone of a patient from a 3D image data set (D) of the examination zone, the examination zone being subject to a periodic motion which is measured, in parallel with the acquisition of the 3D image data set (D), as a motion signal (E) which represents the periodic motion. In order to enable the formation of high-resolution 3D images having an enhanced image quality, the invention proposes a method of this kind which includes the following steps: a) reconstructing a number of low-resolution 3D images (I) from the 3D image data set (D), the low-resolution 3D images (I) being reconstructed from 3D image data of the 3D image data set (D) which has been acquired during different phases of motion of the periodic motion, b) determining motion information (B) of at least one sub-zone (A) of the examination zone during the different phases of motion by means of the low-resolution 3D images (I), c) selecting a temporal reconstruction window (T) in which the motion of the at least one sub-zone (A) is below a predetermined level, d) reconstructing a high-resolution sub-image (K) for the at least one sub-zone (A) from 3D image data (D) lying in the temporal reconstruction window (T) selected for the sub-zone (A), and e) forming the desired 3D image (G) from the at least one sub-image (K), the zones of the 3D image (G) which are not reconstructed as sub-images then being reconstructed from the 3D image data so as to be combined with the at least one sub-image (K).
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Inventors:
RASCHE VOLKER (NL)
GRASS MICHAEL (NL)
GRASS MICHAEL (NL)
Application Number:
PCT/IB2002/002267
Publication Date:
April 29, 2004
Filing Date:
June 13, 2002
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS CORP INTELLECTUAL PTY (DE)
RASCHE VOLKER (NL)
GRASS MICHAEL (NL)
PHILIPS CORP INTELLECTUAL PTY (DE)
RASCHE VOLKER (NL)
GRASS MICHAEL (NL)
International Classes:
G06T1/00; A61B6/03; G06T11/00; (IPC1-7): G06T17/00
Other References:
KLEIN G J ET AL: "A 3D optical flow approach to addition of deformable PET volumes", NONRIGID AND ARTICULATED MOTION WORKSHOP, 1997. PROCEEDINGS., IEEE SAN JUAN, PUERTO RICO 16 JUNE 1997, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, 1997, pages 136 - 143, XP010239163, ISBN: 0-8186-8040-7
SCHAEFFTER T ET AL: "MOTION COMPENSATED PROJECTION RECONSTRUCTION", MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 41, no. 5, May 1999 (1999-05-01), pages 954 - 963, XP001065420, ISSN: 0740-3194
LALUSH D S ET AL: "A priori motion models for four-dimensional reconstruction in gated cardiac SPECT", NUCLEAR SCIENCE SYMPOSIUM, 1996. CONFERENCE RECORD., 1996 IEEE ANAHEIM, CA, USA 2-9 NOV. 1996, NEW YORK, NY, USA,IEEE, US, 2 November 1996 (1996-11-02), pages 1923 - 1927, XP010223897, ISBN: 0-7803-3534-1
WEDEEN V J ET AL: "MOTIONLESS MOVIES OF MYOCARDIAL STRAIN-RATES USING STIMULATED ECHOES", MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 33, no. 3, 1 March 1995 (1995-03-01), pages 401 - 408, XP000494899, ISSN: 0740-3194
HAACKE E M ET AL: "REDUCING MOTION ARTIFACTS IN TWO-DIMENSIONAL FOURIER TRANSFORM IMAGING", MAGNETIC RESONANCE IMAGING, vol. 4, no. 4, 1986, pages 359 - 376, XP008019042, ISSN: 0730-725X
SCHAEFFTER T ET AL: "MOTION COMPENSATED PROJECTION RECONSTRUCTION", MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 41, no. 5, May 1999 (1999-05-01), pages 954 - 963, XP001065420, ISSN: 0740-3194
LALUSH D S ET AL: "A priori motion models for four-dimensional reconstruction in gated cardiac SPECT", NUCLEAR SCIENCE SYMPOSIUM, 1996. CONFERENCE RECORD., 1996 IEEE ANAHEIM, CA, USA 2-9 NOV. 1996, NEW YORK, NY, USA,IEEE, US, 2 November 1996 (1996-11-02), pages 1923 - 1927, XP010223897, ISBN: 0-7803-3534-1
WEDEEN V J ET AL: "MOTIONLESS MOVIES OF MYOCARDIAL STRAIN-RATES USING STIMULATED ECHOES", MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 33, no. 3, 1 March 1995 (1995-03-01), pages 401 - 408, XP000494899, ISSN: 0740-3194
HAACKE E M ET AL: "REDUCING MOTION ARTIFACTS IN TWO-DIMENSIONAL FOURIER TRANSFORM IMAGING", MAGNETIC RESONANCE IMAGING, vol. 4, no. 4, 1986, pages 359 - 376, XP008019042, ISSN: 0730-725X
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