Vascular system doppler diagnostic

Abstract

Vascular diseases are the leading cause of death in Serbia and disability in people over 50 years of age. Ultrasonography examination is quick, painless, safe and comfortable for patients, and for the public health care system inexpensive and accurate. Currently, this diagnostic method represents a "gold standard" in the primary diagnosis, screening and monitoring of vascular diseases. Color duplex is a widely used, non-invasive and highly sensitive procedure, which is a combination of pulse Doppler and real time B-mode. It enables an onscreen, real time observation of the blood flow, color coded within two-dimensional B-mode. In vascular ultrasound, both linear and convex probes are used. Convex and sector probes are used to show deep set structures in the abdomen, pelvis or chest. They operate at frequencies between 2.5 and 5 MHz. The linear probes operate at much higher frequencies (7 to 13 MHz). They are used for imaging of more superficial structures. Ultrasonography in the diagnosis of blood vessel diseases involves the application of modalities in order to assess morphologic characteristics of a blood vessel and a flow through it. Ultrasound systems include the B-mode and pulsed Doppler integrated as Duplex scan. Qualitative assessment of blood flow is possible by analyzing the acoustic waves that presents the arterial flow. Graphic record on the screen or paper enable analyzes of spectral arterial flow curves.

Keywords

• vascular ultrasonography
• doppler