Biomaterial Database

Light output and x-ray attenuation measurements at mammographic beam qualities for nine commercial intensifying screens. 1979

S Parker-Hodds, and B M Moores

X-ray attenuation and intensity of light emitted were measured for nine intensifying screens used in mammography. Incident beam qualities with half value layers in the range of 0.38 to 2.68 mm Al were used to simulate the range of clinical conditions encountered in mammography. All the screens attenuated the x-ray beam to a similar extent at these beam qualities, but a wide variation in the intensity of light emitted was observed. The interrelation of the measured physical parameters in determining both the system speed and noise properties is discussed.

UI	MeSH Term	Description	Entries
D008027	Light	That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.	Light, Visible,Photoradiation,Radiation, Visible,Visible Radiation,Photoradiations,Radiations, Visible,Visible Light,Visible Radiations
D008327	Mammography	Radiographic examination of the breast.	3D-Mammography,Digital Breast Tomosynthesis,Digital Mammography,X-ray Breast Tomosynthesis,3D Mammography,3D-Mammographies,Breast Tomosyntheses, Digital,Breast Tomosyntheses, X-ray,Breast Tomosynthesis, Digital,Breast Tomosynthesis, X-ray,Digital Breast Tomosyntheses,Digital Mammographies,Mammographies,Mammographies, Digital,Mammography, Digital,X ray Breast Tomosynthesis,X-ray Breast Tomosyntheses
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014965	X-Rays	Penetrating electromagnetic radiation emitted when the inner orbital electrons of an atom are excited and release radiant energy. X-ray wavelengths range from 1 pm to 10 nm. Hard X-rays are the higher energy, shorter wavelength X-rays. Soft x-rays or Grenz rays are less energetic and longer in wavelength. The short wavelength end of the X-ray spectrum overlaps the GAMMA RAYS wavelength range. The distinction between gamma rays and X-rays is based on their radiation source.	Grenz Ray,Grenz Rays,Roentgen Ray,Roentgen Rays,X Ray,X-Ray,Xray,Radiation, X,X-Radiation,Xrays,Ray, Grenz,Ray, Roentgen,Ray, X,Rays, Grenz,Rays, Roentgen,Rays, X,X Radiation,X Rays,X-Radiations
D055095	Optics and Photonics	A specialized field of physics and engineering involved in studying the behavior and properties of light and the technology of analyzing, generating, transmitting, and manipulating ELECTROMAGNETIC RADIATION in the visible, infrared, and ultraviolet range.	Photonics,Photonics and Optics