Or a sick person dead. Everybody loves technology. Most physicians will order tests for no other reason than to reassure patients. As if to say, I know you don't believe me, I am only human, but this x-ray also shows you do not have pneumonia. I sometimes wonder if patients understand that there is no perfect test.
Every test has inherent dangers and inaccuracies.
Doctors need to weigh each test that they perform and every medicine that they give as a balance between the number needed to treat helpfully and the number needed to do harm. If you give a medication that saves one life for every 10 people given it, but it kills two, the medicine is not a good one. On the other hand, a medicine that saves two people for every 10 given the medication, and kills one in every 100 is a good medicine. Unless you are that one person in a 100. Practised honestly, it should reduce unnecessary illness in the hospital.