PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 3340730

Relationship between attenuation coefficients and dose-spread kernels.

A L Boyer
View original source ↗Export metadata ↓

Abstract

Dose-spread kernels can be used to calculate the dose distribution in a photon beam by convolving the kernel with the primary fluence distribution. The theoretical relationships between various types and components of dose-spread kernels relative to photon attenuation coefficients are explored. These relations can be valuable as checks on the conservation of energy by dose-spread kernels calculated by analytic or Monte Carlo methods.

Explore related subjects

RadiometryJournal ArticleResearch Support, U.S. Gov't, P.H.S.

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

A L Boyer. 1988. Relationship between attenuation coefficients and dose-spread kernels.. https://pubmed.ncbi.nlm.nih.gov/3340730/

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

KEEP EXPLORING

Related citations

PubMed1992

Detection limit concepts: foundations, myths, and utilization.

Detection limit parameters such as the minimum detectable concentration have been widely discussed in the literature for more than 30 y. Misunderstanding and misapplication of these parameters continue to be widespread and, indeed, even encoded into computer programs, especially those developed in recent years for use with PC-based analyzer boards. This brief review of the principal concepts related to the most common types of detection limits provides guidance for correctly using these parameters. In particular, several myths concerning issues such as the "sample-specific minimum detectable concentration" and the "unreliability" of measurements made below this concentration are discussed.

Radiometry↗
PubMed1991

Toward a standard method for determining waterborne radon.

Many details of the liquid scintillation method for the determination of waterborne Rn have underappreciated effects on the measurement. This paper quantifies effects arising from the type of cocktail, vial, standardization procedure, temperature control, and instrument parameters chosen in the procedure. Comments are made on sampling procedures. Details are provided that allow an optimization of the technique so that concentrations approaching 8 Bq dm-3 (200 pCi L-1) can be measured reliably with a precision (2 sigma) of 20% when counting times are only 20 min.

Radiometry↗