Medical image processing device, computer program, and nuclear medicine device
AssigneeNational Institutes for Quantum Science and Technology
InventorsHideaki Tashima, Taiga Yamaya
Life of this patent
Estimating the term…
Abstract
An image is reconstituted by iterative approximation, a PET event updated image is produced by updating a current image using a PET event, a Compton event updated image is produced by updating the current image using a Compton event, the PET event updated image and the Compton event updated image that have been independently produced are weighted and added together, and the current image is updated using an image obtained by addition processing. In this way, PET events and Compton events, which have different properties, can be used in combination to efficiently and stably reconstitute images, improving image quality.
Claims16
A medical image processing device for reconstructing an image by iterative approximation using a PET event where a coincidence signal of a pair of annihilation radiations is obtained and a Compton event is obtained by Compton scattering, the medical image processing device comprising:
- a computer configured to perform a set of functions, comprising:
- produce a PET event updated image by updating a current image using a PET event;
- produce a Compton event updated image by updating the current image using a Compton event;
- weight and add the PET event updated image and the Compton event updated image produced independently of each other;
- update the current image using an image obtained by the weighting and adding of the PET event updated image and the Compton event updated image;
- and
- iterate processing of the PET event updated image, the Compton event updated image, the weighting and adding of the PET event updated image and the Compton event updated image, and the updating of the current image using the image obtained by the weighting and adding of the PET event updated image and the Compton event updated image.
Dependencies are inferred from the claim text.