Factors Affecting and Techniques to Improve Needle Visualization

Abstract

The number of ultrasound-guided procedures, including drainages, biopsies, and vascular access procedures, continues to increase. Ultrasound guidance provides many advantages over other imaging modalities, including simultaneous real-time visualization of the needle and target, absence on nonionizing radiation, easy mobility, early identification of complications, and relatively low cost. The critical aspect of ultrasound-guided procedures is adequate needle visualization. This article discusses basic physics of the soundwave-needle interaction, techniques performed by the operator to improve needle visualization, as well as new technologies. By understanding these basic concepts, the reader will understand the principles that are necessary to improve visualization of the needle to use ultrasound as a successful tool for the performance of needle-initiated interventions.

Keywords:

Ultrasound guidance - needle - visualization - biopsy