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Accurate Detection Saves Lives 

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The Multifunction Cardiogram system is a revolutionary, non-invasive diagnostic tool for accurately measuring heart health levels and the

impact of ischemia and other problems.

In minutes, the MCG system detects and measures myocardial ischemia

with unprecedented accuracy.

Coronary Artery Disease (CAD) is the leading cause of death worldwide, accounting for over 7 Million deaths annually — more than any other disease category.

Multifunction Cardiogram (MCG) leverages the principles of Computational Biology and Systems Analysis to assist physicians in the detection of coronary ischemia.

The Multifunction Cardiogram (MCG):

Superior CAD Diagnosis 

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The MCG was created to solve an intractable problem in cardiology: the unacceptable inaccuracies of the EKG and other cardiac-related diagnostic tools and the need for more accurate tools.


The inaccuracy of the present diagnostic tools affects both patients with cardiac issues as well as patients whose symptoms may appear to be cardiac-related but are not actually cardiac-derived. An EKG can detect approximately 1/3 of patients with severe coronary artery disease, leaving 2/3 of the patients in danger of dying from their undetected illness. Patients showing signs and symptoms of cardiac-related conditions are often catheterized and have angiograms performed. However, 62 percent of these patients actually have no significant atherosclerosis.

The problem created by inaccurate cardiac diagnostic tools is even more acute for women, leading in part to more women suffering longer-term from heart disease than men.

Emergency MCG has developed a protocol that can efficiently and costs effectively improve the evaluation of patients presenting at the ER with chest pain. Emergency MCG equips the physician with a toolset, which ensures that patients admitted for observation and therapy meet the requirements of medical necessity, and those who are discharged are done so with a high level of confidence.

The MCG is the culmination of the efforts of two generations of dedicated scientists, mathematicians, engineers, and physicians. It uses rapid, automated, cloud-based, empirically derived digitized clinical databases to give doctors around the world access to a startlingly accurate diagnostic system.

 MCG tests are a resting, non-invasive, non-chemical/non-radiation procedure that can be performed in the ER or in any private office by trained technical staff.  With the help of the MCG, physicians are able to make much more rapid, objective and accurate diagnoses of heart diseases.

The MCG uses a systems approach to modeling the heart and then comparing these models to a demographically appropriate risk-stratified database of similar patients using 166 indices with that database to aid both in the diagnosis and in predicting patient needs and outcomes.

A Need Created by Dangerous Inaccuracies

The Multifunction Cardiogram is the only non-invasive online diagnostic testing tool designed to assist physicians in quickly and accurately detecting heart diseases, including CAD ischemia.

When compared to traditional methods MCG has consistently been able to more accurately detect ischemia at earlier stages, enabling physicians to intervene and save lives.

The results from MCG have been validated in double-blind clinical studies where our system has demonstrated accuracy comparable to coronary angiography (90% overall sensitivity, 85% specificity).

This level of accuracy results from advanced techniques in signal processing and systems analysis combined with our unmatched clinical database which allows MCG to provide quantitative, evidence-based results to assist in reaching a diagnosis.

Developed by Experts

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Dr. Mark Houston M.D.





Director, Hypertension Institute and Vascular Biology
Medical Director of Division of Human Nutrition
Medical Director of Clinical Research
ASH Specialist in Clinical Hypertension (FASH)
Vanderbilt University School of Medicine Associate Clinical Professor of Medicine (1990-2012)

The Hypertension Institute was founded in 1995 by Dr. Mark Houston, internist and hypertension and cardiovascular specialist, and Dr. Allen Naftilin, a cardiologist and hypertension specialist, at St. Thomas West Hospital and St. Thomas West Hospital in Nashville, TN. The Hypertension Institute immediately received national acclaim as one of the leading Institutes in the US for the treatment of hypertension and related cardiovascular disorders. In 2000, the Hypertension Institute was recognized as one of the top Cardiovascular Centers in the Southeast by the Consortium of Southeastern Hypertension Centers (COSEHC). Dr. Jordon Asher, internal and hypertension specialist, and Dr. Ralph Hawkins, nephrologist and hypertension specialist, joined the Hypertension Institute later.

Dr. Houston is Director of the Hypertension Institute and is tripled boarded in hypertension as an American Society of Hypertension (ASH) specialist and Fellow of the American Society of Hypertension (FASH), Internal Medicine (ABIM) and Anti-aging medicine (ABAARM), a Masters degree in Human Nutrition from the University of Bridgeport, Connecticut and a Masters of Science degree in Functional and Metabolic Medicine from the University of South Florida in Tampa.

  • Specialty: Hypertension, Lipids, Preventive Cardiovascular Medicine, Nutrition


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Norbert W. Rainford, MD

Executive Medical Director, Hawkeye Global Organic Health & Longevity Wellness Centers

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As a cardiologist in New City, Dr. Rainford delivers comprehensive treatment for your cardiovascular system and heart. Heart disorders identified and treated by a cardiologist can include arrhythmia, angina, heart aneurysms, heart failure, coronary artery disease, congenital heart defects, and rheumatic heart disease, to name a few. Dr. Rainford often sees individuals for indicators like chest pains, high blood pressure or dizziness, among others.

As an internist, Dr. Norbert Rainford specializes in the primary care of adults through diagnosis and treatment of a range of conditions affecting many organ systems. Dr. Rainford also can refer patients to specialists when medically needed. For example, patients having serious breathing problems may be referred to a pulmonologist for additional medical tests or therapies.

A graduate of Columbia University (BA), and New York University, School of Medicine (MD), a former Assistant and Professor of Medicine, Columbia University (Cardiology), Dr. Rainford is a Fellow of the American College of Cardiology and the American College of Physicians. He is also an active member of the Institute for Functional Medicine and the Association of Black Cardiologists.


Dr. Norbert Rainford is a clinical cardiologist with parallel careers in both administrative and clinical medicine specializing in the converging fields of chronic cardiovascular illnesses such as hypertension, lipid abnormalities, diabetes, obesity, chronic inflammation and interconnectivity with the emerging concepts of functional medicine and systems biology.

As a former Carrier (Contractor) Medical Director for Medicare, Dr. Rainford’s varied experience includes data analysis of the utilization of Medicare services, research and formulation of Local Coverage Determinations (payment policies), the development of coverage guidelines, and the interpretation of national CMS and statutory directives for local application.

He served as chair of the Cardiology Work Group of Carrier Medical Directors, advising CMS on topical and emerging cardiology issues and has authored several policies adopted by the American College of Cardiology in the formulation of national template policies.

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