Paid holidays may also be negotiated by employees who have a contract with employers; these are often senior level employees. Employees in exempt professional, technical, or managerial positions such as software developers, HR staff, controllers, and marketing, expect paid holidays to accompany their employment.
1 If the test shows high levels of the substance, you may have a deep vein blood clot. If your test is normal and you have few risk factors, DVT isnât likely.  Venography. This test is used if ultrasound doesnât provide a clear diagnosis.
Conventional ultrasound displays the images in thin, flat sections of the body. Advancements in ultrasound technology include three-dimensional (3-D) ultrasound that formats the sound wave data into 3-D images. Four-dimensional (4-D) ultrasound is 3-D ultrasound in motion. A Doppler ultrasound study may be part of an ultrasound examination. Doppler ultrasound is a special ultrasound technique that evaluates blood as it flows through a blood vessel, including the body's major arteries and veins in the abdomen, arms, legs and neck. There are three types of Doppler ultrasound: