The Koning CT, a Cone Beam CT, provides high spatial and true isotropic resolution at lower dose levels than current CT units. The Koning CT for Breast was introduced at RSNA 2006 and is not cleared for sale in the USA.

A mammogram is a low dose x-ray of the breast used to detect and diagnose breast disease, or to provide a baseline reference for later comparison. Multiple images are obtained by different positioning of the breast. The breast compression during mammography is an essential component to produce an optimal diagnostic mammogram. Film mammography units use film to both capture and display the image; digital mammography units use electronic equipment.
A spot compression reduces the thickness of the area of interest and improves contrast and separation of breast tissues.

A molecule is a structure formed of atoms of various elements. It is the smallest concentration of same or different atoms that all chemical characteristics retain.

See also Free Radicals, Osmole, Enzyme Linked lmmuno Sorbent Assay, Gas Chromatography and Gel Chromatography.

The near field is one of the boundary regions to classify characteristics of electromagnetic fields as a function of distance from the radiating source. The variation of the electromagnetic wave is usually more rapid in the near field than in the far field.

A sample is placed into a concentrated beam of neutrons. Through neutron-capture heavier nuclei become frequently unstable. This artificial radiation decays with a characteristic half-live consisting of alpha- and beta-particles and gamma-rays.

See Neutron Activation Analysis