Research Article
Fluoroscopy-Guided Blockade of the Greater Occipital Nerve in Cadavers: A Comparison of Spread and Nerve Involvement for Different Injectate Volumes
Figure 1
A schematic diagram demonstrating the extent of dye spread between different injectate volumes. The red area indicates the distribution of 2 ml injectate volume. The red and yellow areas denote the distribution of 3.5 ml injectate volume. The red, yellow, and blue areas show the distribution of 5 ml injectate volume. GON: greater occipital nerve; TON: third occipital nerve.