SPINE INJECTION-NEEDLE ADVANCEMENT

SUMMARY

1. As a needle advances toward a target starting with an oblique projection, its trajectory can be broken into two predominant vectors: medial and ventral.

2. After a needle is embedded in a tissue and on its given path, placing the notch laterally will drive the needle tip medially.


3. Placing the notch medially will drive the needle tip ventrally.


4. if a needle trajectory is less oblique and more perpendicular to the skin surface (Fig. 2.11), then a lateral needle tip movement can be achieved.

Images: Furman, Michael B., and Leland Berkwits. Atlas of Image-Guided Spinal Procedures. Elsevier, Inc, 2017.

Reference(s)

Furman, Michael B., and Leland Berkwits. Atlas of Image-Guided Spinal Procedures. Elsevier, Inc, 2017.
Horowitz AL. MRI Physics for Physicians. Springer Science & Business Media. (1989) ISBN:1468403338.
Mangrum W, Christianson K, Duncan S et-al. Duke Review of MRI Principles. Mosby. (2012) ISBN:1455700843.