Title:
MAGNETIC RESONANCE (MR)-BASED ATTENUATION CORRECTION AND MONITOR ALIGNMENT CALIBRATION
Document Type and Number:
WIPO Patent Application WO/2015/193756
Kind Code:
A3
Abstract:
A system (10) and method (150) compensate a medical image for truncation. A histogram module (84) is configured to receive or generate a joint histogram describing frequencies of feature vectors in a pair of images. The images of the pair are generated with different imaging modalities. The feature vectors each represent features at a spatial location by at least values of the images of the pair at the spatial location. An estimation module (86) is configured to estimate values for a truncated region of the image. The estimation includes looking up distributions of values in the joint histogram with partial feature vectors. A system (10) and method (200) further monitor the trend of an alignment calibration state of a hybrid imaging scanner. The calibration state is statistically inferred from registration parameters resulting from registration of image pairs generated with the scanner.
Inventors:
ZHU YANG-MING (NL)
COCHOFF STEVEN MICHAEL (NL)
COCHOFF STEVEN MICHAEL (NL)
Application Number:
PCT/IB2015/054067
Publication Date:
March 24, 2016
Filing Date:
May 29, 2015
Export Citation:
Assignee:
KONINKL PHILIPS NV (NL)
International Classes:
G06T5/40; G06T5/00
Domestic Patent References:
| WO2009138898A1 | 2009-11-19 |
Foreign References:
| US20070104393A1 | 2007-05-10 |
Other References:
HOFMANN MATTHIAS ET AL: "MRI-Based Attenuation Correction for PET/MRI: A Novel Approach Combining Pattern Recognition and Atlas Registration", THE JOURNAL OF NUCLEAR MEDICINE, SOCIETY OF NUCLEAR MEDICINE, US, vol. 49, no. 11, 1 November 2008 (2008-11-01), pages 1875 - 1883, XP007908997, ISSN: 0161-5505, DOI: 10.2967/JNUMED.107.049353
JOHAN NUYTS ET AL: "Completion of a Truncated Attenuation Image From the Attenuated PET Emission Data", IEEE TRANSACTIONS ON MEDICAL IMAGING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 32, no. 2, 1 February 2013 (2013-02-01), pages 237 - 246, XP011491214, ISSN: 0278-0062, DOI: 10.1109/TMI.2012.2220376
JOHAN NUYTS ET AL: "Completion of a Truncated Attenuation Image From the Attenuated PET Emission Data", IEEE TRANSACTIONS ON MEDICAL IMAGING, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 32, no. 2, 1 February 2013 (2013-02-01), pages 237 - 246, XP011491214, ISSN: 0278-0062, DOI: 10.1109/TMI.2012.2220376
Attorney, Agent or Firm:
STEFFEN, Thomas et al. (AE Eindhoven, NL)
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