diffusion-mri SKILL.md skillA
diffusion-mri from kewang0622/mri-research-skill is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add kewang0622/mri-research-skill/diffusion-mri@v0.14.0Pins v0.14.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- kewang0622/mri-research-skill
- Path
skills/diffusion-mri/SKILL.md- Versions recorded
- 14
- Latest version
- v0.14.0, committed Oct 31, 2026
- First version recorded
- Sep 20, 2026
- Size
- 5,251 bytes
- Repository stars
- 31
- License
- MIT
Read before fitting, converting or reporting diffusion-weighted MRI: ADC, DTI/DKI, IVIM, NODDI, compartment or spectrum fractions, tractography and diffusion biomarker studies. Prevents silent errors in b-vector frames and vendor vector files, the b-range for ADC/DTI, units, noise floor and uncalibrated or unstable fraction models. Ships tested numpy helpers (frame conversion, tensor fit, noise floor, calibration, stratified recovery and retest tests). Starts from reconstructed DWI.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# MRFoundry: Diffusion MRI Use the tested numpy helpers; a closed-form log-linear DTI fit needs no toolbox installation. Open only the row you need; `python .agents/skills/diffusion-mri/scripts/spectrum_fit.py --api` (or `gradient_frames.py`) lists signatures (do not cat the source). ## Route | Task | Use (`scripts/`) | Read only if needed | |---|---|---| | Gradient tables, frames, DTI/DKI orientation, b-values | `gradient_frames.py`: `array_from_fsl`, `fsl_from_world`, `world_from_array`, `world_from_lps`, `bvals_bvecs_from_vectors`, `fit_tensor_lls`, `simulate_tensor_signal` | [DWI and DTI](references/dwi-dti.md) | | ADC, signal fractions, diffusivity spectra, IVIM-type fits | `spectrum_fit.py`: `background_sigma`, `floor_correct`, `adc_fit`, `fit_weights`, `fit_fixed_basis`, `calibrate_basis`, `fraction_below`, `stratified_recovery_test` | [model calibration](../mri-research/references/model-calibration.md) | | Preprocessing (denoise, Gibbs, topup/eddy), CSD, NODDI, tractography, QSIPrep | MRtrix3, FSL, DIPY, AMICO | [preprocessing and models](references/preprocessing-and-models.md) | …
Read the whole file at its exact version.
How to install
mdr add kewang0622/mri-research-skill/diffusion-mri@sha256:6e6fc32f2a1f2960The line at the top of this page pins the label v0.14.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_njhxf72s2uocouop)
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Versions
The registry has recorded 14 versions of this file, between Sep 20, 2026 and Oct 31, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v0.14.0 latest | 2026-10-31 | e7494be | 5,251 B | A | view · diff |
| v0.13.0 | 2026-10-31 | 4618a27 | 5,251 B | A | view · diff |
| v0.12.0 | 2026-10-31 | 5e72e16 | 5,251 B | A | view · diff |
| v0.11.0 | 2026-10-31 | fd03f30 | 4,950 B | A | view · diff |
| v0.11.0 | 2026-10-31 | e52aacd | 5,193 B | A | view · diff |
| v0.8.0 | 2026-10-10 | 6e4408e | 6,662 B | A | view · diff |
| v0.8.0 | 2026-10-09 | 305d420 | 6,510 B | A | view · diff |
| v0.8.0 | 2026-10-07 | 4cc7dff | 6,544 B | A | view · diff |
| v0.7.0 | 2026-09-28 | adaaf21 | 6,365 B | A | view · diff |
| v0.7.0 | 2026-09-28 | 3b06da0 | 5,950 B | A | view · diff |
| v0.7.0 | 2026-09-24 | 90d0c56 | 5,271 B | A | view · diff |
| v0.7.0 | 2026-09-24 | f90c25f | 4,658 B | A | view · diff |
| v0.7.0 | 2026-09-22 | c1cd332 | 3,828 B | A | view · diff |
| v0.1.0 | 2026-09-20 | a8f0a76 | 3,078 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5251 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
kewang0622/mri-research-skill · 31 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_njhxf72s2uocouop GET https://markdownregistry.com/api/v1/resolve?ref=kewang0622/mri-research-skill/diffusion-mri GET https://markdownregistry.com/api/v1/blob/6e6fc32f2a1f296083211b60c1bd14767c74d5046034f1f909e5a860d01a2ac5
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.