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.
The physiologic attenuation of liver parenchyma at unenhanced multidetector CT varies interindividually between 55 and 65 HU. Usually, the normal liver parenchyma appears homogeneous at multidetector CT, and its attenuation exceeds that of the spleen by about 10 HU.