Profile: Cambridge Heart Inc. focuses on the research, development and commercialization of products for the non-invasive diagnosis of cardiac disease. Our diagnostic product, microvolt T-wave Alternan is an extremely subtle beat-to-beat fluctuation in the T-wave segment of a patient's heartbeat. The use of our products and technology in the performance of a Microvolt T-Wave Alternans test can detect these tiny heartbeat variations, measured down to one millionth of a volt. Our CH 2000 cardiac diagnostic system is a fully featured stress testing system that can include Microvolt T-Wave Alternans (MTWA) testing capability as an add-on feature. Its features includes swivel-tilt color monitor, strip chart recorder or laser printer option, dedicated controls for treadmill or ergometer, standard & custom stress test protocols and zero-distortion linear baseline stabilization (lbs) filter. Our multi-segment Micro-V Alternans Sensors minimize noise and artifact to permit data collection of alternans at the microvolt level. The sensors allow the recording of up to four ECG signals from the same anatomical sites as well as electrode-skin impedance and respiratory signal.