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2026-08-30 NanoVirDx research loop figure

Interpreted the NanoVirDx pseudo-schema and added a circular figure for its core modules and local optimization loops.

Work Done

  • Read packages/nanovirdx/src/nanovirdx/main.py as a conceptual schema spanning histology embedding, MRI simulation, and inversion.
  • Identified the central path WSI -> DomainRepresentation -> synthetic MRI -> recovered tissue/clinical state, with reconstruction or task loss closing the cycle.
  • Distinguished the four parameter families and their local optimization scopes: embedding, tissue calibration, acquisition sequence fitting, and inverse training.
  • Added an editable SVG at packages/nanovirdx/docs/research-loop.svg and interpretation notes at packages/nanovirdx/docs/research-loop.md in the mono workspace.
  • Validated the SVG as well-formed XML.

Lessons Learned: Pitfalls

  • The source calls the sequence loop “optimization,” but its sketched loss only matches a real MRI acquired with fixed settings. This is acquisition fitting, not yet task- or information-optimal sequence design.
  • The comments state an optimization order (EmbeddingParams -> TissueParams -> SequenceParams -> InverseParams), but this should not be presented as a causal dependency graph.
  • The pseudo-code contains unresolved names (_params_tissue, _mri_acq_params) and an unimported Any; these were treated as sketch-level inconsistencies rather than encoded into the figure.

Lessons Learned: Improvements

  • A durable NanoVirDx design note should define the boundary between DomainRepresentation and TissueParams, the actual loss/registration spaces, and whether inversion targets WSI reconstruction or clinical endpoints.
  • Sequence design needs an explicit downstream utility or information objective plus physical acquisition constraints before it can be shown as true sequence optimization.
  • Paired WSI/MRI evidence, WSI-only synthetic training, and real-MRI supervised training should stay visually separate because they support different loops and carry different assumptions.
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