Ultrasonography, commonly called sonography, is a diagnostic medical procedure that uses high-frequency sound waves to produce dynamic visual images of organs, tissues, or blood flow inside the body. This type of procedure is often referred to as a sonogram or ultrasound scan. Ultrasonography can be used to examine many parts of the body, such as the abdomen, breasts, female reproductive system, superficial structures, prostate, heart, and blood vessels. Ultrasonography is a high frequency sound-based diagnostic medical imaging tool used to image  muscles, tendons, soft tissue, pregnancy, fetuses during routine and emergency prenatal care, cardiovascular and many internal organs, to record capture their size, function, structure and any pathological lesions with real time tomographic images in 2D, 3D or 4D.