3D Segment Anything Model with Visual Mamba for Diagnosing Placenta Accreta Spectrum

• URL: http://arxiv.org/abs/2606.00489v2
• Date: Tue, 02 Jun 2026 08:19:50 GMT
• Title: 3D Segment Anything Model with Visual Mamba for Diagnosing Placenta Accreta Spectrum
• Abstract summary: Placenta Accreta Spectrum (PAS) is a rare but highly dangerous obstetric disease.<n>Traditional PAS diagnosis relies on experienced doctors by analyzing cesarean history and Magnetic Resonance Imaging (MRI) data.<n>We establish the first MRI-based PAS dataset, which includes both fine-grained segmentation and classification annotations.
• Score: 35.89714934702222
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Placenta Accreta Spectrum (PAS) is a rare but highly dangerous obstetric disease. Early and accurate PAS diagnosis is critical for maternal health. Traditional PAS diagnosis relies on experienced doctors by analyzing the cesarean history and Magnetic Resonance Imaging (MRI) data. However, district-level hospitals often lack the expertise and resources for accurate PAS diagnosis. To address these challenges, we establish the first MRI-based PAS dataset, which includes both fine-grained segmentation and classification annotations. Meanwhile, diagnosing PAS can be significantly enhanced by segmenting lesion areas from MRI images of the uterus. To achieve automatic PAS diagnosis, we propose 3DSAMba, a novel feature learning framework for effective lesion segmentation. More specifically, we first design a 3D Segment Anything Model (SAM) and incorporate medical domain information into the model through an efficient adapter mechanism. In addition, we introduce a Multi-Level Aggregation Mamba (MLAM) to aggregate feature maps across different levels and a Fusion State Space Model (FSSM) to fuse multi-scale features from both the encoder and decoder. Finally, we apply segmentation masks to the original MRI images through element-wise multiplication, effectively isolating lesion areas for more accurate PAS diagnosis. Extensive experiments validate that our framework significantly improves the PAS diagnostic performance. To facilitate further research in PAS diagnosis, we have released the dataset and source code at https://github.com/Drchip61/PASD.

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