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The average radiation dose from an abdominal X-ray is 0.7 millisieverts (0.0007 Sv), that from an abdominal CT scan is 8 mSv, that from a pelvic CT scan is 6 mGy, and that from a selective CT scan of the abdomen and the pelvis is 14 mGy. [7]
The College of Natural Resources and Environment contains four departments as well as executive and traditional master's programs in the National Capital Region. As of 2010-11, the college had 737 students taking classes on the Blacksburg campus, thereby making it the smallest at Virginia Tech in terms of enrollment.
Recognized effects of higher acute radiation doses are described in more detail in the article on radiation poisoning.Although the International System of Units (SI) defines the sievert (Sv) as the unit of radiation dose equivalent, chronic radiation levels and standards are still often given in units of millirems (mrem), where 1 mrem equals 1/1,000 of a rem and 1 rem equals 0.01 Sv.
The rep has variously been defined as 83 or 93 ergs per gram of tissue (8.3/9.3 mGy) [13] or per cc of tissue. [14] In 1953 the ICRU recommended the rad, equal to 100 erg/g as a new unit of absorbed radiation, [15] but then promoted a switch to the gray in the 1970s.
The Virginia Tech College of Engineering is the academic unit that manages engineering research and education at Virginia Tech. The College can trace its origins to 1872, and was formally established in 1903. Today, The College of Engineering is the largest academic unit of Virginia Tech and has 14 departments of study.
Through its Corps of Cadets ROTC program, Virginia Tech is a senior military college. [10] Virginia Tech offers 280 undergraduate and graduate degree programs to its 37,000 students; as of 2016, it was the state's second-largest public university by enrollment. [11] It is classified among "R1: Doctoral Universities – Very high research ...
The roentgen or röntgen (/ ˈ r ɛ n t ɡ ə n,-dʒ ə n, ˈ r ʌ n t-/; [2] symbol R) is a legacy unit of measurement for the exposure of X-rays and gamma rays, and is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air (statcoulomb per kilogram).
VCOM-Virginia is located on 13 acres within the campus of Virginia Tech, [10] in the Virginia Tech Corporate Research Center. The college operates within a public/private collaboration with Virginia Tech, sharing resources for education, research, and student activities. On campus, the main building consists of 60,000 square feet. [10]