🧠 Brain Myelination Assessment (MRI)
UseQuick reference during reporting or review of pediatric/neonatal brain MRI, when judging whether a structure'…
SourceRutherford MA. MRI of the Neonatal Brain. Saunders, 2002.
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Myelination proceeds caudal→rostral, dorsal→ventral, central→peripheral, and sensory before motor pathways.
When to use
Quick reference during reporting or review of pediatric/neonatal brain MRI, when judging whether a structure's signal is age-appropriate or possibly delayed. Not a diagnostic algorithm — myelination is a continuous biological process and published milestones vary slightly by series and reader.
How it works
No formula — a curated lookup table built from published normal myelination milestones (Rutherford; Barkovich; AJNR/HKJR myelination-clock reviews), cross-referenced by anatomic site and age band.
Key points
- Myelination proceeds caudal→rostral, dorsal→ventral, central→peripheral, and sensory before motor pathways.
- PLIC, brainstem and cerebellar peduncles myelinate earliest (often visible in preterm infants from ~32–36 weeks GA); frontal association white matter is the last to mature, sometimes not appearing until 10–13 months.
- T1 signal change typically precedes T2 signal change at the same site by 1–5 months — relying on T2 alone can underestimate true myelination stage.
- Marked delay or absence of signal at an early-myelinating site (especially PLIC) for the stated age is a recognized marker of brain injury (e.g. HIE, PVL) and warrants clinical correlation.
- After ~2 years, T2-based milestones lose precision; overall developmental assessment should guide interpretation alongside imaging.
References
- Rutherford MA. MRI of the Neonatal Brain. Saunders, 2002.
- Barkovich AJ, Raybaud C. Pediatric Neuroimaging, 6th ed. Wolters Kluwer.
- Welker KM, Patton A. Assessment of normal myelination with magnetic resonance imaging. Semin Neurol. 2012;32(1):15-28.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Age group | Infancy (3–12 months) |
|---|---|
| Anatomic site | Brainstem (dorsal/ventral) |
→Brainstem (dorsal/ventral) · Infancy (3–12 months)See expected findings below
- T1WI appearance：Entire brainstem essentially mature
- T2WI appearance：Ventral pons becomes T2 hypointense around 6 months; brainstem then fully mature
- Overall pattern：Myelination generally follows: caudal→rostral, dorsal→ventral, central→peripheral; sensory tracts before motor tracts; PLIC/brainstem/cerebellum earliest, frontal association white matter latest.
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Brain Myelination Assessment (MRI)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Brain Myelination Assessment (MRI) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Brain Myelination Assessment (MRI) calculated in practice? Can you show a worked example?
- Inputs: Age group Infancy (3–12 months), Anatomic site Brainstem (dorsal/ventral) → Result: Brainstem (dorsal/ventral) · Infancy (3–12 months) See expected findings below（T1WI appearance: Entire brainstem essentially mature, T2WI appearance: Ventral pons becomes T2 hypointense around 6 months; brainstem then fully mature, Overall pattern: Myelination generally follows: caudal→rostral, dorsal→ventral, central→peripheral; sensory tracts before motor tracts; PLIC/brainstem/cerebellum earliest, frontal association white matter latest.）