The heart scan screens for coronary artery disease. The price of this can vary from $49 locally to $29 at Reid Hospital in Richmond. Your doctor can help you determine if this test would be beneficial to you versus a much more costly cardiac stress test.
A common expense can be a followup of an abnormal chest x-ray. A repeat exam in 3 months is much cheaper that an immediate CT scan and is often a reasonable alternative depending on the abnormality.
Mobile screening units offer a limited amount of low priced imaging studies (carotid artery ultrasounds and aortic aneurysm screens). I would caution you to discuss with your doctor which tests are appropriate for you rather than just doing all of the tests offered.
Screening mammograms are offered by many hospitals at a reduced rate around Mother's Day and during breast cancer awareness month in October. Certain patients can also qualify for free ones through a grant from ICAP at 765-529-4403.
Let your doctor know if an imaging study would be a significant financial burden to you so alternatives can be discussed. If you're willing and able to drive a little, you can save a lot.