If a doctor is found to be ordering too many MRI or CT scans or other imaging tests for Medicare patients, a federal law is supposed to require the physician to get federal approval for all diagnostic imaging. But the Trump administration has stalled the law’s implementation.

If a doctor is found to be ordering too many MRI or CT scans or other imaging tests for Medicare patients, a federal law is supposed to require the physician to get federal approval for all diagnostic imaging. But the Trump administration has stalled the law’s implementation.