Denoising diffusion models for plug-and-play simultaneous multislice mri reconstruction
AssigneesSiemens Healthineers AG, New York University
InventorsMahmoud Mostapha, Radu Miron, Mariappan S. Nadar, Gregor Körzdörfer, Esther Raithel, Jan Fritz
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Abstract
Systems and methods for image reconstruction of simultaneous multi-slice (SMS) magnetic resonance data using diffusion models. An SMS diffusion plug and play model is based on DDIM and supports fast sampling. The SMS diffusion plug and play model includes data consistency based on a data proximal subproblem that incorporates an SMS imaging model.
Claims20
A method for diffusion plug and play (PnP) image reconstruction of medical imaging data, the method comprising:
- acquiring simultaneous multi-slice (SMS) medical imaging data of a patient;
- iteratively refining the SMS medical imaging data using a SMS diffusion PnP model, wherein for each step of an iterative process of the SMS diffusion PnP model, a pretrained diffusion model is used to remove noise to predict a next state of the iterative process and a data consistency step is applied that incorporates a SMS imaging model;
- and
- outputting reconstructed SMS medical imaging data of the patient.
A system for diffusion plug and play (PnP) image reconstruction of magnetic resonance (MR) data, the system comprising:
- a medical imaging device configured to acquire simultaneous multi-slice (SMS) medical imaging data of a patient;
- a memory configured to store a model configured to reconstruct one or more MR images when input the SMS medical imaging data, wherein the model is configured to iteratively refine the SMS medical imaging data using diffusion, wherein for each step of the iterative process, a pretrained diffusion model is used to remove noise to predict a next state of the iterative process and data consistency is performed by solving a data proximal subproblem;
- and
- a processor configured to reconstruct and/or restore the reconstruct one or more MR images from the SMS medical imaging data using the model.
A method for diffusion plug and play (PnP) image reconstruction of medical imaging data, comprising:
- acquiring, by an magnetic resonance scanner, simultaneous multi-slice (SMS) medical imaging data;
- iteratively reconstructing the SMS medical imaging data using a SMS diffusion PnP model that includes data consistency during reverse diffusion steps;
- and
- outputting a reconstructed image.
Dependencies are inferred from the claim text.