Canceled or aborted CT-guided interventions: 13-year clinical experience at a tertiary care center.

• Approximately 1.7% of CT-guided interventions, for which the patient physically shows up at the CT room and which are considered useful by the radiologist, are eventually canceled or aborted. • Main causes (of which some may be prevented) are pain, lack of a safe window, impossibility to position the co-axial or biopsy needle, inability to lie still, dyspnea, non-discontinuation of anticoagulant therapy, and impossibility to aspirate liquid or advance the catheter when attempting drainage. • CT-guided catheter drainages and head-neck interventions are particularly prone to being canceled or aborted.