longitudinal/AGENTS.md
Furen Xiao a65189cd33 feat(pipelines): integrate niftyreg and adopt Mattes MI as the benchmark headline score
Add `register_niftyreg` as the sixth rigid CT→T1c pipeline using
`reg_aladin` (symmetric block matching + trimmed least squares, NCC
similarity). Runs natively via `conda install -c conda-forge niftyreg`;
no Docker required.

Change the benchmark's primary reported metric from geometric skull-ring
QA to the achieved Mattes MI (`mi_ct_mr`, nats) between the warped CT
and the original MR over the MR head. Geometric QA fields are still
recorded per case in the JSON output.

Raise the SimpleITK benchmark-mode optimizer budget from 150 to 2000
iterations per pyramid level so all toolkits are compared on an equal
iteration footing.

Update `REGISTRATION_BENCHMARK.md` (five→six pipelines, niftyreg row,
elastix bin count 10→32), `AGENTS.md` (toolkit list), and
`bench_registration.py` docstrings/usage accordingly.
2026-09-29 09:47:28 +08:00

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# AGENTS.md
## Environment
This project uses a conda environment named `longitudinal-313` (Python 3.13).
Activate with:
```bash
source /opt/conda/etc/profile.d/conda.sh && conda activate longitudinal-313
```
Key packages: torch 2.14 (+cu126), torchvision, monai 1.6 (pip, Pipeline C), numpy, scipy, pandas, scikit-learn, scikit-image, matplotlib, nibabel, SimpleITK. Registration toolkits (benchmark, see REGISTRATION_BENCHMARK.md): `itk` + `itk-elastix`, `antspyx`, niftyreg 1.5.69 (`conda install -c conda-forge niftyreg`, provides `reg_aladin`), plus Docker images `freesurfer/synthmorph` and `vboussot/elastix_impact`.
## Project
Longitudinal (repeated-measures) analysis of medical imaging data. Repo is at an early stage — see README.md for any project notes.
**All path config lives in `config/paths.json`** — the external data roots the code reads or writes (`data`, `lee`, `m6`, `ntuh_register_inv`). Code resolves them through `src.common` (`PATHS` dict, `path(name)` lookup, `DATA`/`d()` for `data/...` paths). To move any dataset, only edit `config/paths.json`; the repo root is derived from the code location (override with `LONGITUDINAL_ROOT` if needed).
## Conventions
- All Python commands must run inside the `longitudinal-313` conda environment.
- GPU is available (CUDA 12.6); use `torch.device('cuda')` when appropriate. Multi-GPU stages of Pipelines A and C run via `torchrun --standalone --nproc_per_node N` (rank = GPU).
- No lint/test tooling is configured yet; run scripts directly with `python <script>` from the repo root.