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arxiv: 2503.02332 · v3 · submitted 2025-03-04 · 📡 eess.IV · cs.CV

COMMA: Coordinate-aware Modulated Mamba Network for 3D Dispersed Vessel Segmentation

Pith reviewed 2026-05-23 01:42 UTC · model grok-4.3

classification 📡 eess.IV cs.CV
keywords 3D vessel segmentationMamba networkcoordinate-aware modulationmedical image segmentationvascular structuresglobal-local fusionspatial context
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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.

The paper introduces COMMA to address spatial uncertainty in segmenting dispersed 3D vascular structures, which patch-wise training usually erases. It processes entire images in a global branch with a channel-compressed Mamba block for long-range dependencies at reduced cost, while local branches handle cropped patches. A coordinate-aware modulated block links the two branches so local processing gains location awareness. The work also releases a manually labeled dataset of 570 cases, presented as the largest public 3D vessel collection. Tests on six datasets across modalities and vessel types show gains over prior methods, especially for small vessels, plus lower computational load.

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

Figures reproduced from arXiv: 2503.02332 by Gen Shi, Hui Zhang, Jie Tian.

Figure 1
Figure 1. Figure 1: Illustration of the dispersed nature of vascular structures. (a) Qualitative analysis: visualizations of dispersed vascular structures [PITH_FULL_IMAGE:figures/full_fig_p001_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: Illustration of the (a) patch-wise-based method com [PITH_FULL_IMAGE:figures/full_fig_p002_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: The overall framework of our proposed COMMA. [PITH_FULL_IMAGE:figures/full_fig_p003_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: The 3D visualization results from (a) KiPA and (b) [PITH_FULL_IMAGE:figures/full_fig_p006_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: The slice visualization results to illustrate the intuitive evaluation. [PITH_FULL_IMAGE:figures/full_fig_p007_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: Effect of patch size variation across different methods. [PITH_FULL_IMAGE:figures/full_fig_p008_6.png] view at source ↗
Figure 9
Figure 9. Figure 9: The illustration of small vessel structures on the IXI [PITH_FULL_IMAGE:figures/full_fig_p012_9.png] view at source ↗
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.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 2 minor

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)
  1. 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.
  2. 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

0 responses · 0 unresolved

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

0 steps flagged

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

0 free parameters · 2 axioms · 0 invented entities

The central claim rests on standard deep learning training assumptions plus the domain premise that patch-wise training inherently discards spatial context; no free parameters or invented entities are explicitly introduced in the abstract.

axioms (2)
  • domain assumption Patch-wise training loses spatial context for dispersed vascular structures
    Explicitly stated as the core motivation for the global-plus-local design.
  • domain assumption Long-range dependencies can be captured efficiently by channel-compressed Mamba blocks
    Invoked to justify the global branch design.

pith-pipeline@v0.9.0 · 5768 in / 1228 out tokens · 58854 ms · 2026-05-23T01:42:36.432524+00:00 · methodology

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Reference graph

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