Figure 2From: Radiation dose reduction in CT-guided periradicular injections in lumbar spine: Feasibility of a new institutional protocol for improved patient safetyCT-guided nerve root L5- injections. CT-guided periradicular injections at the nerve root L5 in low-dose mode in two male patients. Note the acceptable visibility of the needle tip (arrow) in both interventions, even in reduced contrast. The right image presents a status post hemilaminectomy.Back to article page