In June, KQED, KPCC and ClearHealthCosts.com launched PriceCheck, a crowd-sourced tool that brings to light the disparate costs of medical procedures. PriceCheck began by looking at mammogram prices, and now has turned its focus to the costs of back MRIs, which, it reveals, range in price from $575 to $6,221 in San Francisco alone. We discuss the latest findings.

• More: PriceCheck: How Much Does A Back MRI Cost?
• More: Map: See What Different Providers Charge for Common Health Care Procedures
• More: Share Your Bill, Make Health Costs Transparent in California