What technology does Cartography use?
The technology used is Trans- Aortic Signal Wave Modulation (TASWM). A 150 KHz signal is passed through the generating electrodes, which travel along the Aorta, the largest blood vessel in the chest cavity and is modulated by the ejection of blood, breathing activity as well as electrical and mechanical activity. The signal is then picked up by the measuring electrodes and demodulated. Low bandwidth cardio subsonic is recorded using a special instrument called VAD (Vertical Acceleration Detector). This technology is called Flow Turbulence Accelerometry (FTA). There is a difference in the turbulence characteristics of normal and abnormal vessels. Any obstruction due to blockages disturbs this smooth flow of blood and produces characteristic turbulence. This turbulence is detected by the VAD and provides as to which region of the heart is experiencing reduced blood flow. The technique is similar to how a Seismograph picks up vibrations kilometers inside the earth and lets us know whether
