PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 674670

Step-wedge sensitometry.

J Hale·P Bloch
View original source ↗Export metadata ↓

Abstract

An aluminum step-wedge filter placed far from the film cassette provides the constant variation of subject contrast required for quantitative sensitometry while virtually eliminating scatter radiations. Attenuation curves made with this configuration are almost exponentially linear.

Explore related subjects

RadiographyJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

J Hale, P Bloch. 1978. Step-wedge sensitometry.. https://doi.org/10.1148/128.3.820

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed1992

Microdosimetry of diagnostic X rays: applications of the variance-covariance method.

Microdosimetric measurements in beams of diagnostic X rays (between 30 and 125 kV) have been performed. In these pulsed radiation fields, microdosimetric measurements are possible only by application of the variance-covariance technique. The dose mean lineal energy, yD, is determined for various simulated diameters, at different depths in the absorber, and at different points within the pulse intervals. From the measured temporal dependences one can also obtain values of yD for different X-ray pulse generators. The results demonstrate the potential of the variance-covariance method for a diversity of microdosimetric measurements in radiation protection and in the quality control of radiation beams.

Radiography↗