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%.
To avoid that issue, Dr. Muller envisions the technology as part of a strategy in which people would first be identified as at risk through a genetic test and a noninvasive imaging test such as a CT scan before being referred for the spectroscopy analysis.
Byrne was later ruled out for the third Test, having been sent for a scan on a hand injury in addition to the foot problem which forced him off in Durban.