The role of Power Doppler in ultrasound-guided percutaneous procedures: the Jet sign

In recent decades, ultrasound-guided percutaneous infiltrative procedures have gained prominence in treating musculoskeletal disorders, providing enhanced accuracy over traditional "blind" techniques. This study examines the utility of the Power Doppler ultrasound technique, specifically the "Jet sign," in identifying needle placement during infiltrative treatments. A retrospective analysis was conducted involving 5,376 patients where procedures were performed under ultrasound guidance from January 2014 to January 2022. While the needle tip was successfully visualized in 7% of cases, the Jet sign facilitated accurate localization in 368 instances. This technique capitalizes on the creation of a high-pressure fluid flow, enabling real-time monitoring and precise targeting of the therapeutic agent while minimizing complications. The findings underscore the effectiveness of the Jet sign in enhancing procedural accuracy and suggest its incorporation into clinical practice to optimize outcomes in ultrasound-assisted infiltrative therapies.