(Singapore Business Times – 1 March, 2003)
"CT obtains data from different angles around the body to show a cross section of body and organs, and has become the choice method for diagnosing many diseases, including cancers, since it not only confirms tumours but gives its size and location.
For an idea of what "next generation" CT scanners can do, it's now able to complete a total body scan in 22 seconds, says Dr YC Lim, Executive Director of HSC Medical Center in Kuala Lumpur, which installed the first Siemens Somatom Sensation 16 in South-East Asia. "This equipment is able to pick up heart, stroke & cancer risk," says Dr Lim, " and it can replace the coronary angiogram." Angiogram is an invasive procedure where radio-opaque dye is injected into the arteries to find out if there are blockages. So far, the center has seen 97 percent Negative Predictive Value (NPV), using this equipment. Previous heart tests like the Stress ECG are only about 60 percent accurate.
In terms of cancer detection, it's six times more sensitive than a normal x-ray. For lung cancer, for example, x-rays only detect stage three or four for cancer, but the Sensation 16 can detect it at an early stage. Most cancers can be detected – from thorax to the pelvis, excluding the heart – in 22 seconds."