Freebase(0.00 / 0 votes)Rate this definition: Lidar is a remote sensing technology that measures distance by illuminating a target with a laser and analyzing the reflected light. The term lidar comes from combining the words light and radar. Lidar is popularly known as a technology used to make high resolution maps, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, remote sensing, atmospheric physics, airborne laser swath mapping, laser altimetry, and contour mapping.
Cholesterol is a waxy, fat-like substance made in the liver and found in certain foods from animals, such as dairy products, eggs, and meat. The body needs some cholesterol in order to function properly. However, too much cholesterol can increase a person's risk of developing heart disease. There are several factors that contribute to high cholesterol -- some are controllable while others are not. Gender: After menopause, a woman's LDL cholesterol level (bad cholesterol) goes up, as does her risk for heart disease.
Low-density lipoprotein cholesterol (LDL, or bad cholesterol) should be below 100 mg/dL (3.37 mmol/L). But the numbers alone won't tell you or your doctor the whole story. High cholesterol is only one of a number of risk factors for heart attack and stroke. The most important factor to consider is a person's long-term risk of experiencing a heart attack or stroke. If the risk is very low, there is probably no need for statins, unless the LDL is above 190 mg/dL (4.9 mmol/L).