SPINE INJECTION-FINGER DEPTH GAUGE
From NeuroRehab.wiki
SUMMARY
1.The only way to redirect the needle is to retract and redirect it.
2. If the needle is at a safe depth, it can be easily redirected to a similar safe depth by pinching it at the skin surface to mark the depth, retracting it, and advancing it until the same location is reached at the same fingertip depth.
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.
