ConCal — CT Contrast Calculator

University of Wisconsin · Department of Radiology · weight-based iodinated contrast dosing

Dose calculator

Protocol

Patient weight

Contrast concentration (mg I/mL)

Scan delay (seconds)

Time from injection start to scan start (default 60 s).

Contrast

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Saline chaser

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Inj. rate

—

mL/s

Conserves total iodine: volume₁ × conc₁ = volume₂ × conc₂

Fill in any three fields and leave one blank, then press Convert.

Solution 1

Volume (mL)

Concentration (mg I/mL)

Solution 2

Volume (mL)

Concentration (mg I/mL)

Contrast injection time	—
Total injection time (incl. chaser)	—
Scan starts after injection finishes	—