Analytic Spectral Method

Based on research conducted at MIT, Cambridge Heart’s Analytic Spectral Method^® is able to detect alternans at the level of 1-2 microvolts, not visible to the human eye.  This clinically validated method allows MTWA to be measured even in the presence of noise typically encountered during exercise stress testing.  Medicare provides reimbursement for MTWA testing only when the Analytic Spectral Method is used. 

The MTWA test using the Analytic Spectral Method is available on a variety of platforms offered by Cambridge Heart and Cardiac Science.

Cambridge Heart's Micro-V Alternans SensorsMicro-V Alternans Sensors^™

Cambridge Heart’s proprietary Micro-V Alternans Sensors^™ are designed to minimize noise and artifact. The multi-segment sensors allow the recording of up to four ECG signals from the same anatomical site.  An adaptive noise reduction algorithm combines these signals, along with impedance and respiratory signals, to create an enhanced ECG.

Together, the Analytic Spectral Method and Micro-V Alternans Sensors comprise a specially-designed system to detect very subtle alternating patterns in the ECG not visible to the human eye.