COMMA: Coordinate-aware Modulated Mamba Network for 3D Dispersed Vessel Segmentation
Pith reviewed 2026-05-23 01:42 UTC · model grok-4.3
The pith
COMMA combines full-image Mamba encoding with patch processing through coordinate modulation to retain spatial context for 3D vessel segmentation.
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
Core claim
COMMA achieves superior 3D vessel segmentation by encoding entire images with a channel-compressed Mamba block to capture long-range dependencies efficiently, then routing coordinate information through a modulated block to let local patch branches perceive spatial context, yielding better results on small dispersed vessels than existing approaches.
What carries the argument
The coordinate-aware modulated (CaM) block, which enhances interactions between the global and local branches to allow the local branch to perceive spatial information.
Load-bearing premise
The coordinate-aware modulated block actually improves the local branch's perception of spatial information enough to boost segmentation accuracy.
What would settle it
An ablation experiment that removes the CaM block and measures whether accuracy on small vessels drops compared with the full model.
Figures
read the original abstract
Accurate segmentation of 3D vascular structures is essential for various medical imaging applications. The dispersed nature of vascular structures leads to inherent spatial uncertainty and necessitates location awareness, yet most current 3D medical segmentation models rely on the patch-wise training strategy that usually loses this spatial context. In this study, we introduce the Coordinate-aware Modulated Mamba Network (COMMA) and contribute a manually labeled dataset of 570 cases, the largest publicly available 3D vessel dataset to date. COMMA leverages both entire and cropped patch data through global and local branches, ensuring robust and efficient spatial location awareness. Specifically, COMMA employs a channel-compressed Mamba (ccMamba) block to encode entire image data, capturing long-range dependencies while optimizing computational costs. Additionally, we propose a coordinate-aware modulated (CaM) block to enhance interactions between the global and local branches, allowing the local branch to better perceive spatial information. We evaluate COMMA on six datasets, covering two imaging modalities and five types of vascular tissues. The results demonstrate COMMA's superior performance compared to state-of-the-art methods with computational efficiency, especially in segmenting small vessels. Ablation studies further highlight the importance of our proposed modules and spatial information. The code and data will be open source at https://github.com/shigen-StoneRoot/COMMA.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper proposes the Coordinate-aware Modulated Mamba Network (COMMA) for segmenting dispersed 3D vascular structures. It combines global (entire-image) and local (patch) branches using a channel-compressed Mamba (ccMamba) block for long-range dependencies and a coordinate-aware modulated (CaM) block to improve spatial awareness in the local branch. The work contributes a new manually annotated dataset of 570 cases (largest public 3D vessel dataset) and evaluates on six datasets spanning two modalities and five vessel types, claiming superior accuracy and efficiency versus state-of-the-art methods, especially for small vessels, with ablations confirming the value of the proposed modules and spatial context.
Significance. If the reported gains hold under rigorous validation, the contribution of a large, publicly released 3D vessel dataset plus open-source code would be a clear asset to the medical-image-segmentation community. The global-local architecture with explicit coordinate modulation addresses a recognized limitation of patch-wise training for dispersed structures and could influence subsequent Mamba-based or hybrid segmentation models.
minor comments (2)
- Abstract: the performance claims are stated qualitatively ('superior performance... with computational efficiency') without any numerical values, dataset-specific scores, or baseline names; adding one or two key metrics (e.g., Dice on the largest test set) would strengthen the summary without lengthening the abstract.
- The manuscript states that code and data 'will be open source' at a GitHub URL; confirming the repository is live at submission time would increase reproducibility.
Simulated Author's Rebuttal
We thank the referee for the positive summary, recognition of the dataset contribution, and recommendation for minor revision. No major comments were provided in the report.
Circularity Check
No significant circularity
full rationale
The paper proposes an empirical architecture (COMMA with ccMamba and CaM blocks) for 3D vessel segmentation and validates it via performance comparisons on six external datasets plus ablations. No derivation chain, equations, or predictions are presented that reduce to self-definition, fitted inputs renamed as predictions, or load-bearing self-citations. The central claims rest on observable segmentation metrics against independent benchmarks, satisfying the self-contained criterion for a score of 0.
Axiom & Free-Parameter Ledger
axioms (2)
- domain assumption Patch-wise training loses spatial context for dispersed vascular structures
- domain assumption Long-range dependencies can be captured efficiently by channel-compressed Mamba blocks
Lean theorems connected to this paper
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IndisputableMonolith/Foundation/AlexanderDuality.leanalexander_duality_circle_linking unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
COMMA employs a channel-compressed Mamba (ccMamba) block to encode entire image data... coordinate-aware modulated (CaM) block to enhance interactions between the global and local branches
-
IndisputableMonolith/Cost/FunctionalEquation.leanwashburn_uniqueness_aczel unclear?
unclearRelation between the paper passage and the cited Recognition theorem.
unified positional encoding strategy... normalized center coordinates (-1,1) of the randomly cropped patch
What do these tags mean?
- matches
- The paper's claim is directly supported by a theorem in the formal canon.
- supports
- The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
- extends
- The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
- uses
- The paper appears to rely on the theorem as machinery.
- contradicts
- The paper's claim conflicts with a theorem or certificate in the canon.
- unclear
- Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.
Reference graph
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Appendix 7.1. Analysis of Fundation Model for 3D Vessel Seg- mantation The Medical-SAM was reported to perform poorly on vas- cular structures [30]. A 3D vessel FM study [47] (no pub- lic code) showed massive artifacts in vessel segmentation (Fig. 8a). The SAM-Med3D on a PARSE case also show low performance (Fig. 8b). We therefore believe that, at this st...
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The λ is empirically set to 0.25
In the CaM block, the local feature patch sizes for each stage are [1, 2, 3, 6], while the global feature patch size remains consistently 8 at each stage. The λ is empirically set to 0.25. 7.4. Definition of Small Vessel Sructures The small vessels tend to have lower contrast, making seg- mentation more challenging. In this study, we define the 1 vessels ...
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