
<b>X-RAYS</b> 
are the least expensive, but are not the best diagnostically.  However, if you have a lesion that does show on plain X-ray films, this is the cheapest and easiest way to follow treatment progress of that lesion.  Some surveillance protocols replace Chest CT scans with Chest X-rays, or alternating one with the other.

X-rays are good for showing lung metastases, but CT is better.  X-rays will show up bone metastases, but only when half the bone has been destroyed.


  