Measurement of blood flow and the effects of different factors on tissue blood flow are important fields of research in physiology and pharmacology. So far, different methods have been innovated, using laser light is the Last one. In this article history, principles and specifications of laser technique along with its advantages and disadvantages ( in comparison with other methods) are revie...

BACKGROUND We aimed to assess the relation of fractional pulse pressure (PPf) to aortic stiffness index and their impact on coronary flow reserve (CFR) and left ventricular diastolic function in asymptomatic diabetic patients. METHODS One hundred and thirty five consecutive asymptomatic diabetic patients (aged 48.8 ± 7.84 years), were included. CFR was calculated noninvasively using transthor...

BACKGROUND Previous studies in this field have not excluded right coronary artery disease by coronary angiography and have included patients with co-morbid conditions that have independent impact on right ventricular function. METHODS 14 patients with left ventricular (LV) anterior myocardial infarction (MI) due to isolated occlusion of left anterior descending coronary artery (LAD) on corona...

Within the last decade the quantification of pulse wave reflections mainly focused on measures of central aortic systolic pressure and its augmentation through reflections based on pulse wave analysis (PWA). A complementary approach is the wave separation analysis (WSA), which quantifies the total amount of arterial wave reflection considering both aortic pulse and flow waves. The aim of this w...

A Doppler radar emulator was developed to simulate the expected mean returns from scanning radar, including pulse-to-pulse variability associated with changes in viewing angle and atmospheric structure. Based on the user’s configuration, the emulator samples the numerical simulation output to produce simulated returned power, equivalent radar reflectivity, Doppler velocity, and Doppler spectrum...

An approach to predict real-time & Matlab Simulation Technique for realisation of speed, classification, ranging of different moving and static target in hostile environment using MIMO Radar.LMS & NLMS Algorithms, TCF are used for unwanted noise & clutter elimination technique using Matlab Programming. In this context authors are try to make an automated system that adjust target’s dynamic char...

In this paper, the application of vector analysis tool in the illuminated area and the Doppler frequency distribution research for the airborne pulse radar is studied. An important feature of vector analysis is that it can closely combine the geometric ideas with algebraic calculations. Through coordinate transform, the relationship between the frame of radar antenna and the ground, under aircr...

Superiority of poly-alphabetic sequences (PAS) for pulse compression radar over the binary and ternary sequences was established earlier. However, the enlarged alphabets in poly–alphabetic sequences deteriorate the noise and Doppler robustness at higher lengths in high resolution radar (HRR) systems. In this paper, poly-semantic sequences (PSS) with restricted alphabet {+1,-1} are considered an...

We have developed a broad-band radar which is the precipitation Ku-band doppler radar using the pulse compression technique (bandwidth=80MHz), and observed the rainfall. We could successfully obtain the vertical profile of the equivalent reflectivity factor Ze and doppler velocity with the high range-resolution from low altitude.