Pediatric Imaging

Weight-based contrast dosing and the bedside Schwartz eGFR.

Weight-based contrast dose

Confirm against your department protocol and the agent package insert.

Agent

Weight

Dose per kg

mL/kg

Maximum total (cap)

—mL

Bedside Schwartz eGFR

For children/adolescents (1–18 y). eGFR = 0.413 × height(cm) ÷ creatinine(mg/dL).

Height

Serum creatinine

mg/dL

—mL/min/1.73m²

Enter values to generate a summary.

Contrast dosing. Iodinated CT contrast in children is commonly 1.5–2 mL/kg of a low-osmolar agent, not to exceed the institutional adult maximum. Gadolinium is dosed at 0.1 mmol/kg for routine MRI; volume depends on molarity (0.5 M → 0.2 mL/kg; 1.0 M → 0.1 mL/kg). Defaults here are editable — always reconcile with local protocol and the package insert. Schwartz. Bedside (updated) Schwartz equation, Schwartz et al., J Am Soc Nephrol 2009.
Reference only — not a substitute for clinical judgment or weight-based protocol verification.