
Blood is one of the most important connective tissue in the human body. Medically, blood is considered as the critical highway, transporting essential components of the body metabolism to various organs. The measurement of the dynamics of blood is therefore necessary in understanding the physical state of a body, one among them being the blood flow measurement. The volume rate of blood flow is defined as the amount of blood passing through a cross section of a blood vessel per unit time. Blood flow measurement devices are imperative for diagnosing various clinical vascular conditions such as arterial occlusion, peripheral vascular diseases including diabetic micro and macro vascular complications. These devices also find their applications in skin testing, cerebral blood flow measurement, burn assessment and others. As per the American Diabetes Association estimates, 1 out of every 3 individuals above 50 years of age was diagnosed with diabetes. A rising geriatric population worldwide with high risk of diabetes, gastrointestinal, cardiovascular and peripheral vascular diseases coupled with an accentuated demand for minimally invasive procedures has triggered the growth of this market. Rise in prevalence of such diseases has resulted in increased number of surgical procedures that require blood flow measurement devices. Among these, peripheral vascular disease accounts to be one of the major applications of blood flow measurement devices. The causative factors for development of peripheral arterial disease are atherosclerosis, hyperlipidemia, hypertension and cigarette smoking. The market for blood flow measurement devices include laser Doppler, ultrasonic Doppler and electromagnetic blood flow measurement devices.