Czech Republic Time is in the Central European Time Zone . Central European Standard Time ( CET ) is 1 hours ahead of Greenwich Mean Time ( GMT+1 ). Like most states in Europe, Summer (Daylight-Saving) Time is observed in Czech Republic Time, where the time is shifted forward by 1 hour; 2 hours ahead of Greenwich Mean Time ( GMT+2 ). After the Summer months the time in Czech Republic Time is shifted back by 1 hour to Central European Time (CET) or ( GMT+1 )
What Is a Doppler Ultrasound? A Doppler ultrasound is a test that uses high frequency sound waves (ultrasound) to measure the amount of blood flow through your arteries and veins, usually those that supply blood to your arms and legs. Vascular flow studies, also known as blood flow studies, can detect abnormal flow within an artery or blood vessel.
This may be due to an arterial blockage, a blood clot inside a blood vessel or bypass graft, or an injury to a blood vessel. The Doppler ultrasound exam may be ordered if you have (or if your doctor thinks you may have): 1  deep vein thrombosis (a blood clot in a vein deep inside your body). 2  superficial thrombophlebitis (inflammation due to a blood clot in a vein just below the skin's surface).