PubMed HealthSearch

PubMed · 7087917

Dose descriptors for computed tomography.

Abstract

A weakness in the dose descriptor, the computed tomography dosimetry index, is discussed and an alternate descriptor is proposed. The new descriptor, the equivalent rectangular width, conveniently expresses the spatial spread of dose and is simply derived from customary dose measurements. A measure of performance, which expresses the relative size of the volume being imaged with respect to the volume receiving the dose, is suggested for computed tomography. 87.70.Es, 87.60.Mv.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

J J Spokas. Dose descriptors for computed tomography.. https://doi.org/10.1118/1.595072

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

KEEP EXPLORING

Related citations

[Use of low temperature methods with optically stimulated luminescence for measuring ionizing radiation doses].

A new method of cooled optically stimulated luminescence (COSL) based on CaF2:Mn crystals has become the subject of numerous studies carried out by the Pacific Northwest Laboratory in the United States. The method has developed and expanded the feasibility of measuring ionizing radiation doses based on a classical phenomenon of thermoluminescence. Much greater sensitivity of the new method allows to measure doses of 10 microR order. A manifold reading of a given dosimeter is also feasible. That facilitates the elimination of doubtful readings. The reading of a dose from the dosimeter and cleaning for its reuse is performed in temperatures not higher than room temperature. Therefore, dosimeters in the form of powder embedded in a plastic matrix which imitates live tissue, can be easily used, whereas thermoluminescence method would cause melting of a dosimeter during its reading. The authors made an attempt to get acquainted the reader with extremely interesting method for measuring ionizing radiation doses.

Radiation Dosage