Diagnostic Method

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Last updated 6:24 AM on 4/17/26
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10 Terms

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CT Without Contrast shows

Bones, Stones, Head CTs also show blood well

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CT with IV Contrast shows

Infections

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CT with PO (oral) Contrast shows…

Perforation and surgical complications of Upper GI System (bleeding)

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CT with Rectal Contrast shows…

Perforations and surgical complications of colon

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CT Angiography shows…

Blood clots

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Contrast helps us see what…

Infection! & mass

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Side effects of Contrast - Debate whether should continue CT?

Mild - GI, anxiety, chill

Moderate - cardio, respiratory

Severe - arrythmia, arrest etc.

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Almost all cases use IV Contrast. In what cases you don’t use?

Acute Trauma/CVA/TIA/Bleed, Hydrocephalus, Dementia; OR stone in abdomen/pelvis, hematuria, flank pain
And Prefer avoid CT Contrast in Children < 15 y/o

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MRI general uses:

Not recommended in ED
Brain, Spine, Bones (vascular necrosis

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