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Liver hypodensity on a CT scan is caused by a variety of factors, according to Radiopaedia, such as benign and malignant neoplasms, focal nodular hyperplasia, focal fatty infiltration, benign epithelial cysts, cysts caused by liver disease and infection, pyogenic abscesses, fungal abscesses, amoebic abscesses, vascular infarctions, lacerations, old ...
Non-contrast means you get your test done without any injections of dye or drinking any oral prep. Most modern CT machines take under 10 minutes for a spine CT and many under â¦ 5 minutes. You will lay on the ct scan table. You may need to bring your arms over your head if possible. Some places might have you hold your breath when they acquire the scan. (usually for only 12 seconds or so).