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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Spine J. 2009 Nov 18;10(1):32. doi: 10.1016/j.spinee.2009.10.006

Figure 1.

Figure 1

MRI T2 weighted signal of discs punctured by different size needles. When compared with the adjacent intact discs, the signal of 27-gauge (upper arrow pointed) and 30-gauges (middle arrow pointed) needles punctured discs disappeared since the first week post injury. The signal of 33-gauge (lower arrow pointed) needle punctured disc still could be seen at the 1-week time point, but disappeared at 2 weeks post operation.