T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) — free guideline decision tool
Two-echo signals give T2/T2* and R2*, liver R2* becomes LIC, and myocardial T2* is graded for iron. Instant, browser-side.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
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.
| TE1 | 1.2 ms |
|---|---|
| Signal at TE1 | 900 |
| TE2 | 4.8 ms |
| Signal at TE2 | 420 |
| Tissue | Myocardium (T2*, iron) |
| Field strength | 1.5 T |
→T2 / T2*4.7ms
- T2 / T2*：4.72 ms ((TE2−TE1)/ln(S1/S2))
- R2 / R2*：211.7 s⁻¹
- Myocardial T2* (1.5 T equivalent)：4.7 ms — <10 ms: severe cardiac iron, high heart-failure risk
| TE1 | 1.2 ms |
|---|---|
| Signal at TE1 | 900 |
| TE2 | 4.8 ms |
| Signal at TE2 | 420 |
| Tissue | Liver (T2*, iron) |
| Field strength | 1.5 T |
→LIC5.6mg/g
- T2 / T2*：4.72 ms ((TE2−TE1)/ln(S1/S2))
- R2 / R2*：211.7 s⁻¹
- Liver iron concentration：5.6 mg Fe/g dry weight — Mild (1.8–7)
Common questions
What is T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*)?
Two-echo signals give T2/T2* and R2*, liver R2* becomes LIC, and myocardial T2* is graded for iron. Instant, browser-side.
How is T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) calculated? What is the core formula?
T2 = (TE2 − TE1)/ln(S1/S2); R2* = 1000/T2*; LIC = 0.0254 × R2* + 0.202 (1.5 T, Wood 2005).
When is T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) used?
Iron-overload MRI in thalassemia and transfusion-dependent patients; quick checks of cartilage or myocardial T2 mapping.
What are the key clinical points for T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*)?
R2* = 1000/T2*. LIC = 0.0254 × R2* + 0.202. Myocardial T2* <10 ms severe. 3 T values ≈ half of 1.5 T.
What are the limits and cautions when using T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*)?
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 T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) 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 T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) calculated in practice? Can you show a worked example?
Inputs: TE1 1.2 ms, Signal at TE1 900, TE2 4.8 ms, Signal at TE2 420, Tissue Myocardium (T2*, iron), Field strength 1.5 T → Result: T2 / T2* 4.7 ms（T2 / T2*: 4.72 ms ((TE2−TE1)/ln(S1/S2)), R2 / R2*: 211.7 s⁻¹, Myocardial T2* (1.5 T equivalent): 4.7 ms — <10 ms: severe cardiac iron, high heart-failure risk） Inputs: TE1 1.2 ms, Signal at TE1 900, TE2 4.8 ms, Signal at TE2 420, Tissue Liver (T2*, iron), Field strength 1.5 T → Result: LIC 5.6 mg/g（T2 / T2*: 4.72 ms ((TE2−TE1)/ln(S1/S2)), R2 / R2*: 211.7 s⁻¹, Liver iron concentration: 5.6 mg Fe/g dry weight — Mild (1.8–7)）
Run T2 / T2* Relaxometry & Iron Load (Liver LIC, Myocardial T2*) now
Two-echo signals give T2/T2* and R2*, liver R2* becomes LIC, and myocardial T2* is graded for iron. Instant, browser-side.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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