DWI / ADC Calculator & Reference Values (with rADC) — free guideline decision tool

Compute ADC from two b-values or enter it directly, get rADC against a reference tissue, and compare with literature thresholds for prostate, breast and acute ischemia. Instant, browser-side.

ADC = ln(S_low/S_high)/(b_high − b_low); rADC = lesion ADC / reference ADC.

Quantitative DWI reporting, research measurements and cross-scanner comparison.

ADC = ln(S1/S2)/(b2 − b1). Prostate 750–900 µm²/s. Breast ~1.30×10⁻³ mm²/s. Ischemic core <620 µm²/s.

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.

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.

Inputs: Low b-value 0 s/mm², Signal at low b 820, High b-value 800 s/mm², Signal at high b 310, Or lesion ADC directly 0.85 ×10⁻³ mm²/s, Organ Prostate → Result: ADC 0.850 ×10⁻³ mm²/s（ADC: 0.850 ×10⁻³ mm²/s = 850 µm²/s (entered), Reference cue: 750–900 µm²/s: suspicious range (PI-RADS scoring remains visual), Caveat: ADC depends on b-value pair, field strength, vendor and ROI placement; validate thresholds on local scanners.）