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magent BED Calculator (Fowler 1989)
x402
magent BED Calculator (Fowler 1989) is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Calculates Biologically Effective Dose (BED) using the Fowler 1989 formula: BED = n × d × (1 + d / (α/β)), given number of fractions, dose per fraction, and tissue alpha/beta ratio.
Price / call$0.005
Success—
StatusUnknown
How this service works
Fowler 1989 BED without a time or repopulation term: BED = n * d * (1 + d / (alpha/beta)). n equal fractions (1-50), d Gy per fraction (0.5-30), caller-assigned tissue alpha/beta (1-20 Gy). Rounds to 1 decimal. Rejects non-positive n*d or alpha/beta. No T_k/T_pot, no EQD2. Not a radiotherapy prescription. magent does not plan radiotherapy. Not a medical device.
Output
Returns a single BED value in Gy, rounded to 1 decimal place, computed as n × d × (1 + d / (α/β)). The API validates inputs and rejects non-positive values for n, d_gy, or alpha_beta, and enforces parameter clamps (n: 1–50, d_gy: 0.5–30, alpha_beta: 1–20).
Example use cases
Prostate SBRT BED evaluation
“What's the BED for a prostate SBRT schedule of 5 fractions at 7.25 Gy each, using an alpha/beta of 1.5 Gy?”
Palliative bone metastasis fractionation check
“Calculate the BED for a palliative bone met treatment: 10 fractions of 3 Gy, with an alpha/beta of 10 Gy.”
Comparing conventional vs hypofractionated breast radiotherapy
“Give me the BED for a conventional breast RT schedule of 25 fractions at 2 Gy, with alpha/beta of 4 Gy.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/bedWhen to prefer
Use this endpoint when you need a fast, formula-exact BED computation based strictly on the Fowler 1989 model (no time correction, no repopulation, no EQD2 conversion). Prefer this over general radiobiology tools when you need a lightweight, auditable single-formula result without tissue-table lookups or prescription logic.
Side effects
- Non-positive n or d_gy or alpha_beta — request rejected with error
- n outside 1–50 range — clamped or rejected
- d_gy outside 0.5–30 Gy range — clamped or rejected
- alpha_beta outside 1–20 Gy range — clamped or rejected
- Missing required query parameters — returns validation error
- Payment not included or insufficient — x402 payment required response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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