Seeking individuals to participate in a study exploring back pain. The study will take place at the Lucas Center for Imaging at Stanford and will require a single visit up to 3 hours. The study is comprised of a MRI scan and surveys. MRI is safe, non-invasive, and does not use x-rays or radiation. Participants may be compensated $150 and receive an image of their brain.

Participants must:

• Be between 21-65 years old
• Either (a) Have chronic lower back pain and currently taking opioids or (b) no chronic pain and no opioid
  use
• Have no metallic implants or piercings they cannot remove
• Not be claustrophobic
• Not be pregnant

If you think you may be eligible, please complete this confidential screening survey by clicking the link:

https://redcap.stanford.edu/surveys/?s=3NLPF9WWJF

If you are eligible, a lab representative will contact you with more details. If you know of any healthy individuals
that may be interested in the study or those who suffer from chronic lower back pain and are currently taking
opioids, please feel free to refer them to this ad and survey. We greatly appreciate any referrals!

At the Stanford Center for Back Pain, we research innovative and effective treatments for back pain. To learn
more about our lab and research, visit our website here: http://med.stanford.edu/pain/snapl.html