CT Effective Dose (DLP × k)
CT effective dose (AAPM Report 96): effective dose (mSv) = DLP × region-specific k conversion coefficient.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Dose-length product
- 400
- Body region
- Chest (k 0.014)
Result: Effective dose 5.6 mSv (chest, k 0.014).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Caveat
- A population estimate (ICRP-60 weighting), not patient-specific organ dosimetry; pediatric factors differ and are not used here.
What you enter
- Dose-length product (mGy·cm)
- Body region
How this is calculated
- Formula
- Effective dose (mSv) = DLP (mGy·cm) × region k. Adult k: head 0.0021, head-neck 0.0031, neck 0.0059, chest 0.014, abdomen/pelvis 0.015.
AAPM Report 96. The Measurement, Reporting, and Management of Radiation Dose in CT. American Association of Physicists in Medicine, 2008 (DLP × region conversion coefficient, EUR 16262 / ICRP-60 weighting). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.