Step 1 of 3 · Symptom-first triage
What are you seeing?
Pick the body system or chief complaint. Next, choose the specific finding — ContrastRx will give you the ACR diagnosis and treatment pathway.
Choose what you observe
Skin / Mucosa
Hives, itching, flushing, facial swelling
Airway / Throat
Throat tightness, hoarseness, stridor, laryngeal edema
Breathing / Lungs
Wheeze, shortness of breath, hypoxia, rales
Circulation / Vitals
Hypotension, bradycardia, tachycardia, hypertension
Neurologic
Seizure, LOC, altered mental status
Injection Site
Swelling, pain, leak at IV
Gadolinium (GBCA)
Reactions to gadolinium-based MRI contrast agents
Delayed Reaction
Symptoms appearing 1 h – 1 week post-contrast
Pediatric
Weight-based reactions in children
Before Contrast
Risk assessment, premedication, renal screening
For decision support only. Always confirm with the current ACR Manual on Contrast Media and your institutional protocol.