FCDM: A Physics-Guided Bidirectional Frequency Aware Convolution and Diffusion-Based Model for Sinogram Inpainting

MedSAM-3 has been introduced as a text promptable medical segmentation model designed to enhance medical image and video segmentation by allowing precise targeting of anatomical structures through open-vocabulary text descriptions. This model builds on the Segment Anything Model (SAM) 3 architecture, addressing the limitations of existing methods that require extensive manual annotation for clinical applications.

A novel multi-view X-ray/CT registration method has been proposed to enhance intraoperative bone registration in orthopedic procedures, addressing challenges such as achieving sub-millimeter accuracy and reducing the need for manual key-point annotations. This method utilizes contour-based iterative closest point (ICP) optimization, focusing on specific bone substructure contours to improve registration robustness and accuracy.

A new framework named ReBrain has been introduced for reconstructing brain MRI from sparse CT slices using a retrieval-augmented diffusion approach. This method employs a Brownian Bridge Diffusion Model to synthesize MRI slices and retrieves similar CT slices from a prior database to enhance reconstruction accuracy. This innovation addresses the challenges posed by low-dose CT scans that often result in poor resolution and limited data for MRI synthesis.

A novel approach to linear inverse problems has been introduced through an unconditional representation of the conditional score function (UCoS), which significantly reduces computational costs by eliminating the need for multiple forward model evaluations during sampling. This method leverages an offline training phase to learn a task-dependent score function based on the linear forward operator.

A new statistical framework for crack pre-localization in 3D concrete images has been introduced, addressing the challenges of effectively segmenting cracks in large-scale computed tomography (CT) images. This method utilizes a Hessian-based filter and geometric descriptors to identify regions likely to contain cracks, relying on minimal calibration data rather than extensive annotated datasets.

A new publicly accessible model for automated segmentation of muscle and fat in computed tomography (CT) images has been introduced, enhancing body composition analysis. This model effectively segments skeletal muscle, subcutaneous adipose tissue, and visceral adipose tissue in axial CT images, addressing a significant gap in available tools for clinical applications.

A new foundation model named SPECTRE has been introduced, utilizing a fully transformer-based architecture for volumetric computed tomography (CT). This model employs self-supervised and cross-modal pretraining strategies to effectively learn CT representations, addressing challenges such as extreme token scaling and weak clinical supervision.