Each point in each slice of a CT scan is essentially a separate test, and the chance that a whole body CT scan is going to turn up something somewhere that looks funny is nearly 100%.

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But the fact that centers were able to use at least one radiation-reduction technique in most patients "should serve as a wake-up call to cardiac CT laboratories that do not routinely use these methods, " Einstein writes in his editorial.

CNN: Heart test can pack radioactive wallop

He seemed to have developed an infection, but our X-rays and CT scans failed to turn up a source.

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