Henry David Thoreau Quotes. Our life is frittered away by detail... simplify, simplify. Henry David Thoreau. Author Profession: Author. Nationality: American Quotes. Born: July 12, 1817.
Quick Answer. Attenuation refers to how dense a part of the body appears relative to other body parts on a CT scan or X-ray, according to MedPix; while hypoattenuation means lower density, hyperattenuation refers to higher density.
AAPM 2011 Summit on CT Dose. (CTDI) â defined. â¢ CTDI Represents. â Average dose along the z direction. â at a given point (x,y) in the scan plane. â over the central scan of a series of scans. â when the series consists of a large number of scans. â separated by the nominal beam width (contiguous.