• Pre‑TAVI CT is an essential component of preoperative planning, providing accurate measurements of native valve dimensions that are critical for selecting the appropriate prosthesis size.

• The high correlation between CT measurements and the prosthesis size confirms the value of detailed CT assessment in minimizing sizing discrepancies and reducing potential complications.

• The choice of prosthesis model significantly influences the incidence of perioperative complications, emphasizing the need for individualized treatment strategies based on anatomical and clinical characteristics.

• Factors such as male gender and prosthesis placement failure are linked to higher mortality, highlighting the importance of a multidisciplinary approach involving radiologists, cardiologists, and surgeons in the decision‑making process.

• In summary, a comprehensive pre‑TAVI CT evaluation is crucial for optimizing TAVI outcomes and reducing inherent procedural risks, thereby enhancing both the safety and effectiveness of treating severe aortic stenosis.