 The concept has held a particular interest because of the high and rising costs of health care delivery despite legislative attempts to address them, such the Affordable Care Act (Obamacare).While there have been pilot programs launched by major insurance carriers such as UnitedHealthcare to control costs in the most costly medical conditions like cancer, for now the primary application of flat-rate pricing has been in medical imaging, such as x-rays, MRIs, mammograms, and ultrasounds.Regional companies such as Med Health Services Inc. in the Pittsburgh area and Northwest Radiology Network of Indianapolis have been among the first in the nation to implement the practice on a trial basis.