Read Only Memory, computer equipment to store data once, not changeable.

(Å* or A*) A unit used to measure the wavelength of x-rays.
Definition: 0.1 nanometer or 10^-10 meter or 100 picometer.

The lateromedial view of a mammogram is performed with a 90° angulated x-ray beam directed from the lateral to the medial breast. For a lateromedial oblique view, the x-ray beam is directed from the lower-outer to the upper-inner part of the breast (the exact reverse of the mediolateral oblique view). These views improve the visualization of medial breast tissue (also called true reverse oblique).

Xeromammography or xeroradiography is a breast imaging. Xeroradiography uses photoelectric records of x-ray images on a coated metal plate. Xeromammography as distinct from film-screen mammography uses low-energy photon beams, long exposure times and dry chemical developers.
Although xeromammography has sensitivity and specificity comparable with those of a film-screen mammogram, it is not recommended for screening or diagnostic mammography because of maintenance problems and the need for higher breast radiation doses compared with modern low dose mammography equipment.

Gas chromatography is a process to separate gas molecules of different size due to their different adsorption at macroporous surfaces, e.g. at activated charcoal. The separation is managed by the use of starting gas or heating up.