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Incidence of Inadvertent Intravascular Injection during CT Fluoroscopy–Guided Epidural Steroid Injections

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Figure

FIG 1. Classification scheme for the location of visualized vessels seenduring inadvertent intravascular injection in the lumbar (A) and cervi-cal (B) spine
FIG 2. Intravascular injection during lumbar TFESI. Preinjection (A), immediate postinjection (B),and delayed postinjection (C) images demonstrate a vessel in the left foraminal zone (arrow) thatwashes out on the delayed image.
Table 3: Characteristics of identified vascular injections
FIG 5. Immediate contrast washout. Preinjection (A), immediate postinjection (B), and delayedpostinjection (C) images obtained after injection of 1.0-mL contrast
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