Analysis of CT Scan and MRI Cost. CT Scan Cost and MRI Cost. What is a CT Scan. X-ray computed tomography, or CT, is a medical technology used for screening for and diagnosing medical conditions. A CT scan is the three-dimensional image generated by putting together multiple images of planes, or âslices,â of the target region of the patientsâ body.
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Hafnium (atomic number 72, symbol Hf) is a transitional metal and a chemical element, which chemically resembles zirconium.It is a silvery grey, lustrous, and ductile metal found in zirconium minerals.Hafnium is also corrosion resistant, but zirconium impurities affect its physical properties and its nuclear properties, in particular. Due to their chemical similarity, hafnium and zirconium are difficult to separate.iven that hafnium absorbs neutrons, it is used in nuclear reactors control rods. As an alloying agent, the element is also used in niobium, titanium, iron, and other metals. Hafnium is employed in high-temperature ceramics and alloys because some compounds of the element are refractory.