Figure 4

Examples for planning scans and periprocedural guidance scans for a left-sided diagnostic S1 nerve root injection in a 23-year-old male using scanning with standard dose (SD; A, B) and a left-sided L5 nerve root injection in a 53-year-old male using scanning with low dose (LD; C, D). The scans were rated with excellent image quality and high confidence for planning and intervention guidance.