Changes in Cerebral Blood Flow in Patients Treated With Spinal Cord Stimulation for Low Back and Leg Pain

Inclusion Criteria

• •Have had one or more back surgery procedures.
• •Have used an active Precision SCS device for chronic low back and bilateral leg pain for at least 6 weeks.
• •Have bilateral leg pain.
• •Have a baseline VAS of \>4 (without stimulation).
• •Have greater than 50% reduction in pain with SCS at optimal settings
• •Be 18 years of age or older.
• •Have the cognitive and functional capability to operate the controls for the device, to comply with directions during the study, and willing to participate in all study activities.
• •Be capable of reading and understanding patient information materials and giving written informed consent.